BRAKE CONTROL SYSTEM F BRAKES BRC A · brc-1 brake control system f brakes contents c d e g h i j k...

BRC-1

BRAKE CONTROL SYSTEM

F BRAKES

CONTENTS

C

D

E

G

H

I

J

K

L

M

SECTIONBRCA

B

BRC

BRAKE CONTROL SYSTEM

ABS

PRECAUTIONS .......................................................... 4Precautions for Supplemental Restraint System(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-SIONER” .................................................................. 4Precautions for Brake System .................................. 4Precautions for Brake Control .................................. 4

PREPARATION ........................................................... 5Special Service Tools (SST) ..................................... 5

SYSTEM DESCRIPTION ............................................ 6System Diagram ....................................................... 6Functions .................................................................. 6Operation That Is Not “System Error” ...................... 6Fail-Safe Function .................................................... 6

ABS, EBD SYSTEM .............................................. 6Hydraulic Circuit Diagram ........................................ 7

CAN COMMUNICATION ............................................ 8System Description .................................................. 8

TROUBLE DIAGNOSIS .............................................. 9How to Perform Trouble Diagnosis for Quick andAccurate Repair ....................................................... 9

INTRODUCTION ................................................... 9DIAGNOSIS FLOWCHART ................................ 10ASKING COMPLAINTS .......................................11EXAMPLE OF DIAGNOSIS SHEET ....................11

Component Parts Location ..................................... 12Schematic — ABS — ............................................. 13Wiring Diagram — ABS — ..................................... 14CONSULT- II Functions .......................................... 18

CONSULT-II MAIN FUNCTION ........................... 18CONSULT-IIBASICOPERATIONPROCEDURE

... 18Self-Diagnosis ........................................................ 19

OPERATION PROCEDURE ............................... 19ERASE MEMORY ............................................... 19DISPLAY ITEM LIST ........................................... 19

Data Monitor ........................................................... 21OPERATION PROCEDURE ............................... 21DISPLAY ITEM LIST ........................................... 21

Active Test .............................................................. 22OPERATION PROCEDURE ................................ 22SOLENOID VALVE .............................................. 23ABS MOTOR ....................................................... 23

For Fast and Accurate Diagnosis ........................... 24PRECAUTIONS FOR DIAGNOSIS ..................... 24

Basic Inspection ..................................................... 24BASIC INSPECTION 1 BRAKE FLUID LEVEL,LEAKS, AND BRAKE PADS ................................ 24BASIC INSPECTION 2 POWER SYSTEM TER-MINAL LOOSENESS AND BATTERY INSPEC-TION .................................................................... 24BASIC INSPECTION 3 ABS WARNING LAMPAND BRAKE WARNING LAMP INSPECTION .... 25

Inspection 1 Wheel Sensor System ........................ 26Inspection2ABSActuatorandElectricUnit(ControlUnit) ........................................................................ 27Inspection 3 ABS Actuator Relay or ABS MotorRelay Circuit ........................................................... 28Inspection 4 CAN Communication Circuit .............. 29Inspection5ABSActuatorandElectricUnit(ControlUnit) Power Supply and Ground Circuit .................. 29Inspection 6 Brake Fluid Level Switch Circuit ......... 31Inspection 7 Parking Brake Switch Circuit .............. 33Inspection 8 Warning lamp system ......................... 34Symptom 1: Excessive ABS Function OperationFrequency ............................................................... 34Symptom 2: Unexpected Pedal Reaction ............... 35Symptom 3: The Stopping Distance Is Long .......... 35Symptom 4: ABS Function Does Not Operate ....... 36Symptom 5: Pedal Vibration or ABS OperationSound Occurs ......................................................... 36Symptom 6: ABS Warning Lamp Indication Is NotNormal .................................................................... 36

WHEEL SENSORS ................................................... 38Removal and Installation ........................................ 38

REMOVAL ........................................................... 39INSTALLATION ................................................... 39

BRC-2

SENSOR ROTOR ...................................................... 40Removal and Installation ........................................ 40

FRONT ................................................................ 40REAR ................................................................... 40

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)... 41Removal and Installation ........................................ 41

REMOVAL ........................................................... 41INSTALLATION .................................................... 42

ESP/TCS/ABS

PRECAUTIONS ......................................................... 43Precautions for Supplemental Restraint System(SRS) “AIR BAG” and “SEAT BELT PRE-TEN-SIONER” ................................................................. 43Precautions for Brake System ................................ 43Precautions for Brake Control ................................ 43

PREPARATION ......................................................... 45Special Service Tools (SST) ................................... 45

ON-VEHICLE SERVICE ............................................ 46Adjustment of Steering Angle Sensor Neutral Posi-tion .......................................................................... 46Calibration of Decel G Sensor ................................ 47

SYSTEM DESCRIPTION .......................................... 48System Diagram ..................................................... 48Functions ................................................................ 48Operation That Is Not “System Error” ..................... 49Fail-Safe Function .................................................. 49

ABS, EBD ............................................................ 49ESP/TCS ............................................................. 49

Hydraulic Circuit Diagram ....................................... 50CAN COMMUNICATION ........................................... 51

System Description ................................................. 51TROUBLE DIAGNOSIS ............................................ 52

How to Perform Trouble Diagnosis for Quick andAccurate Repair ...................................................... 52

INTRODUCTION ................................................. 52DIAGNOSIS FLOWCHART ................................. 53ASKING COMPLAINTS ....................................... 54EXAMPLE OF DIAGNOSIS SHEET .................... 54

Component Installation Location ............................ 55Schematic ............................................................... 56Wiring Diagram — ESP — ..................................... 57CONSULT-II Functions ........................................... 64

CONSULT-II MAIN FUNCTION ........................... 64CONSULT-IIBASICOPERATIONPROCEDURE

... 64Self-Diagnosis ........................................................ 65

OPERATION PROCEDURE ................................ 65ERASE MEMORY ............................................... 65DISPLAY ITEM LIST ........................................... 66

Data Monitor ........................................................... 68OPERATION PROCEDURE ................................ 68DISPLAY ITEM LIST ........................................... 68

Active Test .............................................................. 71OPERATION PROCEDURE ................................ 71SOLENOID VALVE .............................................. 72ABS MOTOR ....................................................... 72

For Fast and Accurate Diagnosis ............................73PRECAUTIONS FOR DIAGNOSIS .....................73

Basic Inspection ......................................................74BASIC INSPECTION 1 BRAKE FLUID LEVEL,LEAKS, AND BRAKE PADS ................................74BASIC INSPECTION 2 POWER SYSTEM TER-MINAL LOOSENESS AND BATTERY INSPEC-TION ....................................................................74BASIC INSPECTION 3 ABS WARNING LAMP,BRAKEWARNINGLAMP,ESPOFFINDICATORLAMP AND SLIP INDICATOR LAMP INSPEC-TION ....................................................................74

Inspection 1 Wheel Sensor Circuit ..........................75Inspection 2 Engine System ...................................77Inspection 3 ABS actuator and electric unit (controlunit) .........................................................................77Inspection 4 Pressure Sensor Circuit ......................77Inspection 5 Steering Angle Sensor Circuit .............80Inspection 6 Yaw Rate/Side/Decel G sensor Circuit...82Inspection 7 Solenoid, ESP Change-Over Valveand Actuator Relay Circuit ......................................84Inspection 8 ABS Motor, Motor Relay, and Circuit...86Inspection9ABSActuatorandElectricUnit(ControlUnit) Power Supply and Ground Circuit ..................87Inspection 10 Stop Lamp Switch Circuit ..................89Inspection 11 Brake Fluid Level Switch Circuit .......90Inspection 12 CAN Communication Circuit .............91Inspection 13 ESP OFF Switch Circuit ...................91Inspection 14 Parking Brake Switch Circuit ............93Inspection15Warning lampand indicator lampsys-tem ..........................................................................94Inspection 16 Steering Angle Sensor Safe Mode ...94Symptom1ExcessiveABSFunctionOperationFre-quency ....................................................................95Symptom 2 Unexpected Pedal Reaction ................95Symptom 3 The Braking Distance Is Long ..............96Symptom 4 ABS Function Dose Not Operate .........96Symptom 5 Pedal Vibration or ABS OperationSound Occurs .........................................................96Symptom 6 Vehicle Jerks During ESP/TCS/ABSControl ....................................................................97

WHEEL SENSORS ...................................................98Removal and Installation .........................................98

REMOVAL ............................................................98INSTALLATION ....................................................99

SENSOR ROTOR ....................................................100Removal and Installation .......................................100

FRONT ...............................................................100REAR .................................................................100

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) .101Removal and Installation .......................................101

REMOVAL ..........................................................101INSTALLATION ..................................................102

G-SENSOR ..............................................................103Removal and Installation .......................................103

REMOVAL ..........................................................103INSTALLATION ..................................................103

BRC-3

C

D

E

G

H

I

J

K

L

M

A

B

BRC

STEERING ANGLE SENSOR ................................ 104Removal and Installation ...................................... 104

REMOVAL ......................................................... 104INSTALLATION ................................................. 104

BRC-4

[ABS]PRECAUTIONS

[ABS]PRECAUTIONS PFP:00001

Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEATBELT PRE-TENSIONER” BFS0001B

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used alongwith a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certaintypes of collision. Information necessary to service the system safely is included in the SRS and SB section ofthis Service Manual.WARNING:● To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death

in the event of a collision which would result in air bag inflation, all maintenance must be per-formed by an authorized NISSAN/INFINITI dealer.

● Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and AirBag Module, see the SRS section.

● Do not use electrical test equipment on any circuit related to the SRS unless instructed to in thisService Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses orharness connectors.

Precautions for Brake System BFS0001C

● Recommended fluid is brake fluid “DOT 3”or “DOT 4”.● Never reuse drained brake fluid.● Be careful not to splash brake fluid on painted areas.If brake fluid is splashed, wipe it off and flush area

with water immediately.● Never use mineral oils such as gasoline or kerosene. They will ruin rubber parts of the hydraulic system.● Use flare nut wrench when removing flare nuts, and use a flare

nut torque wrench when tighten flare nuts.● Brake system is an important safety part.If a brake fluid leak is

detected, always disassemble the affected part.If a malfunctionis detected, replace part with new one.

● Before working, turn ignition switch OFF and disconnect con-nector of ABS actuator and electric unit (control unit) or the bat-tery cables.

● When installing brake tube and hose, be sure to torque.WARNING:Clean brake pads and shoes with a waste cloth, then wipe witha dust collector.

Precautions for Brake Control BFS0001D

● Just after starting vehicle after ignition switch ON, brake pedal may vibrate or motor operating noise maybe heard from engine room. This is a normal status of operation check.

● Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel,or snow-covered (fresh, deep snow) roads.

● When an error is indicated by ABS or another warning lamp, collect all necessary information from cus-tomer (what symptoms are present under what conditions) and check for simple causes before startingdiagnostic servicing. Besides electrical system inspection, check brake booster operation, brake fluidlevel, and fluid leaks.

● If tyre size and type are used in an improper combination, or brake pads are not Genuine NISSAN parts,stopping distance or steering stability may deteriorate.

● If there is a radio, antenna, or antenna lead-in wire (including wiring) near control module, ABS functionmay have a malfunction or error.

● If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harnesspinches, open circuits, and improper wiring.

SBR820BA

PREPARATION

BRC-5

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

PREPARATION PFP:00002

Special Service Tools (SST) BFS0001E

Tool numberTool name

Description

GG94310000Flare nut torque wrencha :10 mm (0.39 in) / 12 mm (0.47 in)

Installing each brake piping

ST30720000Drifta: 77 mm (0.03 in) dia.b: 55 mm (2.17 in) dia.

Installation rear sensor rotor



KV40104710Drifta: 76 mm (2.99 in) dia.b: 68.5 mm (2.697 in) dia.


NT406

ZZA0701D

ZZA0832D

ZZA0832D

BRC-6

[ABS]SYSTEM DESCRIPTION

SYSTEM DESCRIPTION PFP:00000

System Diagram BFS0001F

Functions BFS0001G

ABS● The Anti-Lock Brake System is a function that detects wheel revolution while braking, and it improves

handling stability during sudden braking by electrically preventing 4 wheels lock. Maneuverability is alsoimproved for avoiding obstacles.

● Electrical system diagnosis by CONSULT-II is available.EBD● Electronic Brake Distributor is a function that detects subtle slippages between the front and rear tyre dur-

ing braking, and it improves handling stability by electrically controlling the brake fluid pressure whichresults in reduced rear tyre slippage.

● Electrical system diagnosis by CONSULT-II is available.

Operation That Is Not “System Error” BFS0001H

ABS● When starting engine or just after starting vehicle, brake pedal may vibrate or the motor operating noise

may be heard from engine room. This is a normal states of the operation check.● During ABS operation, brake pedal lightly vibrates and a mechanical noise may be heard. This is normal.● Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel,

or snow-covered (fresh, deep snow) roads.

Fail-Safe Function BFS0001I

ABS, EBD SYSTEMIn case of electrical malfunction with ABS, ABS warning lamp will turn on. In case of electrical incidents withEBD, brake warning lamp and ABS warning lamp will turn on. Simultaneously, ABS become one of followingconditions of Fail-Safe function.1. For ABS malfunction, only EBD is activated and condition of vehicle is same condition of vehicles without

ABS system.NOTE:ABS self-diagnosis sound may be heard.That is a normal condition because a self-diagnosis for “Ignitionswitch ON” and “The first starting” are being performed.

2. For EBD malfunction, EBD and ABS become inoperative, and condition of vehicle is same as condition ofvehicles without ABS, EBD system.

SFIA3001E

SYSTEM DESCRIPTION

BRC-7

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Hydraulic Circuit Diagram BFS0001J

SFIA3002E

BRC-8

[ABS]CAN COMMUNICATION

CAN COMMUNICATION PFP:23710

System Description BFS0001K

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-tiplex communication line with high data communication speed and excellent error detection ability. Many elec-tronic control units are equipped onto a vehicle, and each control unit shares information and links with othercontrol units during operation (not independent). In CAN communication, control units are connected with 2communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.Each control unit transmits/receives data but selectively reads required data only. Refer to LAN-39, "CANCommunication Unit for Diesel Engine Models" .

TROUBLE DIAGNOSIS

BRC-9

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

TROUBLE DIAGNOSIS PFP:00004

How to Perform Trouble Diagnosis for Quick and Accurate Repair BFS0001L

INTRODUCTION● Most important point to perform diagnosis is to understand systems (control and mechanism) in vehicle

thoroughly.

● It is also important to clarify customer complaints before inspec-tion.First of all, reproduce symptom, and understand it fully.Ask customer about his/her complaints carefully. In some cases,it will be necessary to check symptom by driving vehicle withcustomer.NOTE:Customers are not professionals. Do not assume “maybe cus-tomer means...” or “maybe customer mentioned this symptom”.

● It is essential to check symptoms right from beginning in order torepair a malfunction completely.For an intermittent malfunction, it is important to reproducesymptom based on interview with customer and past examples.Do not perform inspection on ad hoc basis. Most intermittentmalfunctions are caused by poor contacts. In this case, it will beeffective to shake suspected harness or connector by hand.When repairs are performed without any symptom check, noone can judge if malfunction has actually been eliminated.

● After diagnosis, make sure to perform “erase memory”. Refer toBRC-19, "ERASE MEMORY" .

● For an intermittent malfunction, move harness or harness con-nector by hand to check poor contact or false open circuit.

● Always read “GI General Information” to confirm general precautions. Refer to GI-4, "General Precau-tions" .

EFJ0028D

SEF233G

BRC-10

[ABS]TROUBLE DIAGNOSIS

DIAGNOSIS FLOWCHART

SFIA0953E

TROUBLE DIAGNOSIS

BRC-11

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

ASKING COMPLAINTS● Complaints against malfunction vary depending on each person.

It is important to clarify customer complaints.● Ask customer about what symptoms are present and under

what conditions. Use information to reproduce symptom whiledriving.

● It is also important to use the diagnosis sheet so as not to missinformation.

EXAMPLE OF DIAGNOSIS SHEET

SBR339B

LFIA0176E

BRC-12


Component Parts Location BFS0001M

SFIA3004E

TROUBLE DIAGNOSIS

BRC-13

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Schematic — ABS — BFS0001N

MFWA0096E

BRC-14


Wiring Diagram — ABS — BFS0001O

MFWA0144E

TROUBLE DIAGNOSIS

BRC-15

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

MFWA0098E

BRC-16


MFWA0145E

TROUBLE DIAGNOSIS

BRC-17

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

MFWA0146E

BRC-18


CONSULT- II Functions BFS0001P

CONSULT-II MAIN FUNCTIONIn a diagnosis function (main function), there are “SELF-DIAG RESULTS”, “DATA MONITOR”, “CAN DIAGSUPPORT MNTR”, “ACTIVE TEST”, “FUNCTION TEST”, “ECU PART NUMBER”.

CONSULT-II BASIC OPERATION PROCEDURE1. Touch “ABS” in “SELECT SYSTEM” screen.

2. Select required diagnostic location from “SELECT DIAG MODE”screen.

Diagnostictest mode

Function Reference

SELF-DIAGRESULTS

Self-diagnostic results can be read and erased quickly. BRC-19, "Self-Diagnosis"

DATA MONI-TOR

Input/Output data in the ABS actuator and electric unit (control unit) can be read. BRC-21, "Data Monitor"

CAN DIAGSUPPORTMNTR

The results of transmit/receive diagnosis of communication can be read.LAN-16, "CAN Diagnostic

Support Monitor"

ACTIVE TESTDiagnostic Test Mode in which CONSULT-II drives some actuators apart from theABS actuator and electric unit (control unit) and also shifts some parameters in aspecified range.

BRC-22, "Active Test"

FUNCTIONTEST

Performed by CONSULT-II instead of a technician to determine whether each sys-tem is “OK” or “NG”.

Separate volume “CONSULT-II OPERATION MANUAL

(FUNCTION TEST)”

ECU PARTNUMBER

ABS actuator and electric unit (control unit) part number can be read. —

BCIA0030E

BCIA0031E

TROUBLE DIAGNOSIS

BRC-19

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Self-Diagnosis BFS0001Q

OPERATION PROCEDURE1. Turn ignition switch OFF.2. Connect CONSULT-II and CONSULT-II CONVERTER to data link connector.3. Turn ignition switch ON.4. Start engine and drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute.5. After stopping vehicle, with engine running, touch “START (NISSAN BASED VHCL)”, “ABS”, “SELF-DIAG

RESULTS” in order on CONSULT-II screen.CAUTION:If “START (NISSAN BASED VHCL)” is touched immediately after starting engine or turn on theignition switch, “ABS” might not be displayed in the “SELECT SYSTEM” screen. In this case,repeat the operation from step 1.

6. The self-diagnostic results are displayed. (Touch “PRINT” to print out self-diagnostic results, If necessary.)● Check ABS warning lamp if “NO FAILURE” is displayed.

7. Perform the appropriate inspection from display item list, and repair or replace the malfunctioning compo-nent. Refer to BRC-19, "Display Item List" .

8. Start engine and drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute.CAUTION:When the wheel sensor malfunctions, after inspecting the wheel sensor system, the ABS warninglamp and brake warning lamp will not turn off even when the system is normal unless the vehicleis driving at 30 km/h (19 MPH) or more for approximately 1 minute.

ERASE MEMORY1. Turn ignition switch OFF.2. Start engine and touch “START (NISSAN BASED VHCL)”, “ABS”, “SELF-DIAG RESULTS”, “ERASE

MEMORY” in order on CONSULT-II screen to erase the error memory.If “ABS” is not indicated, go to GI-50, "CONSULT-II Data Link Connector (DLC) Circuit" .CAUTION:If the error memory is not erased, re-perform the operation from step 4.

3. Perform self-diagnosis again, and make sure that diagnostic memory is erased.4. Drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute as the final inspection, and make

sure that the ABS warning lamp turn off.

DISPLAY ITEM LISTSelf-diagnostic item Malfunction detecting condition Check system

RR RH SENSOR-1 Circuit of rear RH wheel sensor is open.

BRC-26, "Inspection 1Wheel Sensor System"(Note 1)

RR LH SENSOR-1 Circuit of rear LH wheel sensor is open.

FR RH SENSOR-1 Circuit of front RH wheel sensor is open.

FR LH SENSOR-1 Circuit of front LH wheel sensor is open.

RR RH SENSOR-2

When the circuit in the rear RH wheel sensor is short-circuited. Orwhen the sensor power voltage is outside the standard. When thedistance between the wheel sensor and sensor rotor is too largeand the sensor pulse cannot be recognized by the control unit.

RR LH SENSOR-2

When the circuit in the rear LH wheel sensor is short-circuited. Orwhen the sensor power voltage is outside the standard. When thedistance between the wheel sensor and sensor rotor is too largeand the sensor pulse cannot be recognized by the control unit.

FR RH SENSOR-2

When the circuit in the front RH wheel sensor is short-circuited. Orwhen the sensor power voltage is outside the standard. When thedistance between the wheel sensor and sensor rotor is too largeand the sensor pulse cannot be recognized by the control unit.

FR LH SENSOR-2

When the circuit in the front LH wheel sensor is short-circuited. Orwhen the sensor power voltage is outside the standard. When thedistance between the wheel sensor and sensor rotor is too largeand the sensor pulse cannot be recognized by the control unit.

BRC-20


Note 1: After completing repairs of shorted sensor circuit, when ignition switch is turned ON, ABS warning lamp turns on. Make sure thatABS warning lamp turns off while driving vehicle at 30 km/h (19 MPH) or more for approximately 1 minute according to self-diagnosisprocedure. In addition, if wheel sensor 2 is displayed for wheels, check wheel sensor circuit and also check control unit power voltage.Note 2: When errors are detected in several systems, including CAN communication system [U1000], troubleshoot CAN communicationcircuit. Refer to BRC-29, "Inspection 4 CAN Communication Circuit" .

BATTERY VOLTAGE[MALFUNCTION]

ABS actuator and electric unit (control unit) power voltage is too low.

BRC-29, "Inspection 5ABS Actuator and Elec-tric Unit (Control Unit)Power Supply andGround Circuit"

CONTROLLER FAILURE Internal malfunction of ABS actuator and electric unit (control unit)BRC-27, "Inspection 2ABS Actuator and Elec-tric Unit (Control Unit)"

PUMP MOTOR

During actuator motor operation with ON, when actuator motor turnsOFF or when control line for actuator motor relay is open.

BRC-28, "Inspection 3ABS Actuator Relay orABS Motor Relay Cir-cuit"

During actuator motor operation with OFF, when actuator motorturns ON or when control line for relay is shorted to ground.

ABS SENSOR[MALFUNCTION SIGNAL]

Wheel sensor input is malfunction.BRC-26, "Inspection 1Wheel Sensor System"(Note 1)

FR LH IN ABS SOLWhen the control unit detects an error in the front LH inlet solenoidcircuit.

BRC-28, "Inspection 3ABS Actuator Relay orABS Motor Relay Cir-cuit"

FR LH OUT ABS SOLWhen the control unit detects an error in the front LH outlet solenoidcircuit.

FR RH IN ABS SOLWhen the control unit detects an error in the front RH inlet solenoidcircuit.

FR RH OUT ABS SOLWhen the control unit detects an error in the front RH outlet solenoidcircuit.

RR LH IN ABS SOLWhen the control unit detects an error in the rear LH inlet solenoidcircuit.

RR LH OUT ABS SOLWhen the control unit detects an error in the rear LH outlet solenoidcircuit.

RR RH IN ABS SOLWhen the control unit detects an error in the rear RH inlet solenoidcircuit.

RR RH OUT ABS SOLWhen the control unit detects an error in the rear RH outlet solenoidcircuit.

ACTUATOR RLY When the control unit detects an error in the actuator relay circuit.

CAN COMM CIRCUIT[U1000]

When there is an error in the CAN communications.BRC-29, "Inspection 4CAN CommunicationCircuit" (Note 2)

Self-diagnostic item Malfunction detecting condition Check system

TROUBLE DIAGNOSIS

BRC-21

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Data Monitor BFS0001R

OPERATION PROCEDURE1. Touch “START (NISSAN BASED VHCL)”, “ABS”, “DATA MONITOR” in order on CONSULT-II screen.

CAUTION:When “START (NISSAN BASED VHCL)” is touched immediately after starting engine or turning onignition switch, “ABS” might not be displayed in “SELECT SYSTEM” screen. In this case, repeatthe operation from step 1.

2. At the monitor item selection screen, touch one of the item “ECU INPUT SIGNALS”, “MAIN SIGNALS” or“SELECTION FROM MENU”.

3. Touch “START” to proceed to the data monitor screen.

DISPLAY ITEM LISTCAUTION:The display shows the control unit calculation data, so a normal value might be displayed even in theevent the output circuit (harness) is open or short-circuited.

E:ECU INPUT SIGNALS M:MAIN SIGNALS S:SELECTION FROM MENU

SELECTMONITOR

ITEMMonitor item Display content

Data monitor

ConditionReference value innormal operation

E, M, S

FR LH SENSORFR RH SENSORRR LH SENSORRR RH SENSOR

Wheel speed

0 [km/h] Vehicle stopped

Nearly matches the speed-ometer display (± 10% orless)

Vehicle running(Note 1)

E, M, S STOP LAMP SW Brake pedal operationBrake pedal depressed ON

Brake pedal not depressed OFF

E, M, S BATTERY VOLTBattery voltage supplied to the ABSactuator and electric unit (controlunit)

Ignition switch ON 10 – 16 V

M, S

FR RH IN SOLFR RH OUT SOLFR LH IN SOLFR LH OUT SOLRR RH IN SOLRR RH OUT SOLRR LH IN SOLRR LH OUT SOL

Operation status of all solenoidvalve

Actuator (solenoid valve) isactive (“Active Test ”withCONSULT-II) or actuatorrelay is inactive (in fail-safemode).

ON

When the actuator (sole-noid valve) is not activeand actuator relay is active(ignition switch ON).

OFF

M, S MOTOR RELAYMotor and motor relay operationstatus

When the motor relay andmotor are operating

ON

When the motor relay andmotor are not operating

OFF

M, S ACTUATOR RLY Actuator relay operation status

When the actuator relay isoperating

ON

When the actuator relay isnot operating

OFF

M, S ABS WARN LAMPABS warning lamp status(Note 2)

When ABS warning lamp isON.

ON

When ABS warning lamp isOFF.

OFF

S EBD WARN LAMP Brake warning lamp status (Note 2)Brake warning lamp ON ON

Brake warning lamp OFF OFF

S EBD SIGNAL EBD operationEBD active ON

EBD not active OFF

BRC-22


Note 1:Confirm tyre pressure is normal.Note 2:On and off timing for warning lamp and indicator lamp. Refer to BRC-25, "BASIC INSPECTION 3 ABS WARNING LAMP ANDBRAKE WARNING LAMP INSPECTION" .

Active Test BFS0001S

CAUTION:● Do not perform active test while driving vehicle.● Make sure to completely bleed air from brake system.● Active test cannot be performed when ABS warning lamp is on.● ABS and brake warming lamps turn on during active test.

OPERATION PROCEDURE1. Touch START (NISSAN BASED VHCL), “ABS”, “ACTIVE TEST” in order on CONSULT-II screen.

If “ABS” is not indicated, go to GI-50, "CONSULT-II Data Link Connector (DLC) Circuit" .CAUTION:When “START (NISSAN BASED VHCL)” is touched immediately after starting engine or turning onignition switch, “ABS” might not be displayed in the “SELECT SYSTEM” screen.In this case,repeat the operation from step 1.

2. Touch “SELECT TEST ITEM” is displayed.3. Touch necessary test item.

4. While “MAIN SIGNALS” indication is inverted, touch “START”.5. “ACTIVE TEST” screen will be displayed so perform the following test.

● Solenoid valve● ABS motorNOTE:● When active test is performed while depressing the pedal, the pedal depression amount will

change.This is normal.● “TEST IS STOPPED” is displayed 10 seconds after operation start.● After “TEST IS STOPPED” is displayed, to perform test again, touch “BACK” and repeat step 3.

S ABS SIGNAL ABS operationABS active ON

ABS not active OFF

SEBD FAIL SIGABS FAIL SIG

System error signal statusMalfunctions condition(When system is malfunc-tioning)

OFF

S CRANKING SIG CRANKING statusCranking ON

Not cranking OFF

E:ECU INPUT SIGNALS M:MAIN SIGNALS S:SELECTION FROM MENU

SELECTMONITOR


Data monitor


SFIA1802E

TROUBLE DIAGNOSIS

BRC-23

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

SOLENOID VALVENOTE:The example shown is for front right wheel. The procedure for the other wheels is the same as given below.1. For ABS solenoid valve, touch “UP”, “KEEP”, and “DOWN” on

the display screen. Make sure solenoid valve operates asshown in solenoid valve operation chart.

Solenoid Valve Operation Chart

*: ON for 1 to 2 seconds after the touch, and then OFF

ABS MOTORTouch “ON” and “OFF” on the screen. Make sure ABS motor relayand actuator relay operates as shown in table below.

SFIA0678E

OperationABS solenoid valve

UP KEEP DOWN

FR RH IN SOL OFF ON ON

FR RH OUT SOL OFF OFF ON*

Operation ON OFF

MOTOR RELAY ON OFF

ACTUATOR RLY ON ON

SFIA0593E

BRC-24


For Fast and Accurate Diagnosis BFS0001T

PRECAUTIONS FOR DIAGNOSIS● Before performing diagnosis, always read precautions. Refer to BRC-18, "CONSULT- II Functions" .● After diagnosis is finished, be sure to erase memory. Refer to BRC-19, "ERASE MEMORY" .● When checking continuity and voltage between units, be sure to check for disconnection, looseness,

bend, or collapse of connector terminals. If any malfunction is found, repair or replace connector termi-nals.

● For intermittent symptoms, possible cause is malfunction in harness, harness connector, or terminals.Move harness, harness connector, and terminals to check for poor connections.

● If a circuit tester is used for check, be careful not to forcibly extend any connector terminal.● ABS system electrically controls brake operation and engine output. Following symptoms may be caused

by normal operations:

Basic Inspection BFS0001U

BASIC INSPECTION 1 BRAKE FLUID LEVEL, LEAKS, AND BRAKE PADS1. Check fluid level in the brake reservoir tank. If fluid level is low, refill brake fluid.2. Check brake tube and around ABS actuator and electric unit (control unit) for leaks. If leakage or seepage

is found, check the following items.● If ABS actuator and electric unit (control unit) connection is loose, tighten brake tube to the specified

torque and re-conduct the leak inspection to make sure there are no leakage.● If there is damage to the connection flare nut or ABS actuator and electric unit (control unit) screw,

replace the damaged part and re-conduct the leak inspection to make sure there are no leakage.● If there is leakage or seepage at any location other than ABS actuator and electric unit (control unit)

connection, wipe away leakage or seepage with clean cloth. Then inspect again and confirm than thereis on leakage.

● If there is leakage from ABS actuator and electric unit (control unit), wipe away leakage or seepage withclean cloth. Then inspect again. If there is leakage or seepage, replace ABS actuator and electric unit(control unit).CAUTION:ABS actuator and electric unit (control unit) body cannot be disassembled.

3. Check brake pad degree of wear. Refer to BR-25, "PAD WEAR INSPECTION" in “Front Disc Brake” andBR-31, "PAD WEAR INSPECTION" in “Rear Disc Brake”.

BASIC INSPECTION 2 POWER SYSTEM TERMINAL LOOSENESS AND BATTERY INSPECTIONMake sure battery positive cable, negative cable and ground connection are not loose. In addition, check thebattery voltage to make sure it has not dropped and alternator is normal.

Symptom Symptom description Result

Motor operation noise

This is noise of motor inside ABS actuator and electric unit (control unit).Slight noise may occur during ABS operation.

NormalJust after engine starts, motor operating noise may be heard. This is anormal status of the system operation check.

System operation checknoise

When engine starts, slight “click” noise may be heard from engine com-partment. This is normal and is part of system operation check.

Normal

ABS operation (longer stop-ping distance)

When driving on roads with a low coefficient of friction, such as snowyroads or gravel roads, the stopping distance is sometimes longer forvehicles equipped with ABS. Therefore, when driving on such roads,drive at a sufficiently reduced speed to be safe.

Normal

TROUBLE DIAGNOSIS

BRC-25

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

BASIC INSPECTION 3 ABS WARNING LAMP AND BRAKE WARNING LAMP INSPECTIONNOTE:Make sure that brake fluid level switch and parking brake switch are normal before inspection. Refer to BRC-31, "Inspection 6 Brake Fluid Level Switch Circuit" , BRC-33, "Inspection 7 Parking Brake Switch Circuit" .Check each warning lamp for lighting and light out. Perform inspection for each warning lamp when it is notadaptable to the conditions listed below. Refer to BRC-25, "ON and OFF Timing for ABS Warning Lamp, BrakeWarning Lamp" , BRC-34, "Inspection 8 Warning lamp system" .

ON and OFF Timing for ABS Warning Lamp, Brake Warning Lamp×: ON –: OFF

NOTE:1. Brake warning lamp will turn on in case of operating parking brake (switch turned on) or of actuating brake

fluid level switch (brake fluid is insufficient).2. After starting engine, turn OFF.

Condition ABS warning lampBrake warning lamp

[Note 1]Remarks

Ignition SW OFF – — —

Approx. 2 seconds after ignitionswitch is turned ON

× × [Note 2] —

Approx. 2 seconds later after ignitionswitch ON

– × [Note 2]Go out 2 seconds after ignitionswitch is turned ON.

ABS error × —

There is an ABS actuator andelectric unit (control unit) error.(Power, ground or system mal-function)

EBD error × × —

BRC-26


Inspection 1 Wheel Sensor System BFS0001V

Check each part according to CONSULT-II self-diagnostic results, and then identify the parts to be replaced.CAUTION:Check each part between wheel sensor terminals.

INSPECTION PROCEDURE

1. CHECK SELF-DIAGNOSTIC RESULTS

Check self-diagnostic results.

Is above displayed in self-diagnosis display items?YES >> GO TO 2.NO >> INSPECTION END

2. CHECK TYRE

Check air pressure, wear and size.Are air pressure, wear and size within standard values?YES >> GO TO 3.NO >> Adjust air pressure, or replace tyre.

3. CHECK SENSOR AND SENSOR ROTOR

● Check sensor rotor for damage. Refer to BRC-40, "SENSOR ROTOR" .● Check wheel sensor for damage, disconnection or looseness. Refer to BRC-38, "WHEEL SENSORS" .OK or NGOK >> GO TO 4.NG >> Repair or replace the malfunctioning component.

4. CHECK CONNECTOR

1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E63 andmalfunctioning wheel sensor connector E66 (FR - LH), E77 (FR - RH) or C3 (RR - LH, RH). Check termi-nal to see if it is deformed, disconnected, loose, etc., and repair or replace it if any malfunction condition isfound.

2. Reconnect connectors and check that interference with other parts has not cut wheel sensor cables, drivevehicle at 30 km/h (19 MPH) or more for approximately 1minute, and perform self-diagnosis.

OK or NGOK >> Connector terminal contact is loose, damaged, open or shorted.NG >> GO TO 5.

Self-diagnostic results

FR RH SENSOR-1,-2

FR LH SENSOR- 1,-2

RR RH SENSOR-1,-2

RR LH SENSOR-1,- 2

ABS SENSOR [MALFUNCTION SIGNAL]

TROUBLE DIAGNOSIS

BRC-27

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

5. CHECK WHEEL SENSOR HARNESS

1. Turn ignition switch OFF and disconnect wheel sensor connec-tor E66 (FR - LH), E77 (FR - RH) or C3 (RR - LH, RH) and ABSactuator and electric unit (control unit) connector E63.

2. Check continuity between terminals. (Also check continuitywhen steering wheel is turned right and left and when sensorharness inside wheel well is moved.)

OK or NGOK >> GO TO 6.NG >> Repair or replace harness and connector that have malfunction.

6. CHECK WHEEL SENSOR

1. Replace wheel sensor that resulted in malfunction by self-diagnosis.2. Reconnect connectors, drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute, and then

perform self-diagnosis.Is above displayed on self-diagnosis display?OK >> Wheel sensor has malfunction.NG >> ● Replace ABS actuator and electric unit (control unit).

● Perform to self-diagnosis again, and make sure that the result shows “NO DTC IS DETECTED.FURTHER TESTING MAY BE REQUIRED”.

Inspection 2 ABS Actuator and Electric Unit (Control Unit) BFS0001W




Is above displayed in self-diagnosis display items?YES >> Replace ABS actuator and electric unit (control unit). Perform ABS actuator and electric unit (con-

trol unit) self-diagnosis again.NO >> INSPECTION END

SFIA3012E

Power supply circuit Signal circuit Ground circuit

WheelABS C/U

(E63)Wheel sensor

ABS C/U(E63)

Wheel sensorABS C/U(Signal)

Ground

Front RH 34 1 33 2 34, 33

—Front LH 45 1 46 2 45, 46

Rear RH 43 1 42 2 43, 42

Rear LH 36 3 37 4 36, 37

Power supply circuit : Continuity should exist.Signal circuit : Continuity should exist.Ground circuit : Continuity should not exist.


CONTROLLER FAILURE

BRC-28


Inspection 3 ABS Actuator Relay or ABS Motor Relay Circuit BFS0001X



Check self-diagnosis results.

Is above displayed in self-diagnosis item?YES >> GO TO 2.NO >> INSPECTION END

2. CHECK CONNECTOR

1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E63 checkterminal for deformation, disconnection, looseness, and so on. If there is an error, repair or replace termi-nal.

2. Connect the connector securely and perform self-diagnosis again.OK or NGOK >> Connector terminal contact is loose, damaged, open or shorted.NG >> GO TO 3.

3. CHECK ABS ACTUATOR RELAY OR ABS MOTOR RELAY POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E63.2. Check voltage between ABS actuator and electric unit (control

unit) harness connector E63 and ground.

OK or NGOK >> GO TO 4.NG >> Circuit malfunction between battery and ABS actuator and electric unit (control unit). Repair the

circuit.


FR LH IN ABS SOL

FR LH OUT ABS SOL

RR RH IN ABS SOL

RR RH OUT ABS SOL

FR RH IN ABS SOL

FR RH OUT ABS SOL

RR LH IN ABS SOL

RR LH OUT ABS SOL

PUMP MOTOR

ACTUATOR RLY

SFIA3042E

ABS actuator and electric unit (control unit)(harness connector E63)

Ground Measured value

1, 32 — Battery voltage (Approx. 12 V)

TROUBLE DIAGNOSIS

BRC-29

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

4. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) GROUND CIRCUIT

Check continuity between ABS actuator and electric unit (controlunit) harness connector E63 and ground.

OK or NGOK >> Perform self-diagnosis again. If the same results appear, replace ABS actuator and electric unit

(control unit).NG >> Open or short in harness. Repair or replace harness.

Inspection 4 CAN Communication Circuit BFS0001Y


1. CHECK CONNECTOR

1. Turn ignition switch OFF and disconnect the ABS actuator and electric unit (control unit) connector, andcheck the terminal for deformation, disconnection, looseness, and so on. If there is a malfunction, repairor replace the terminal.

2. Reconnect connector to perform self-diagnosis.Is “CAN COMM CIRCUIT” displayed in the self-diagnosis display items?YES >> Print out the self-diagnostic results, and refer to LAN-4, "Precautions When Using CONSULT-II" .NO >> Connector terminal connector is loose, damaged, open, or shorted.

Inspection 5 ABS Actuator and Electric Unit (Control Unit) Power Supply andGround Circuit BFS0001Z





SFIA2878E


Ground Continuity

16, 47 — Yes


BATTERY VOLTAGE [MALFUNCTION]

BRC-30


2. CHECK CONNECTOR

1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E63 checkterminals for deformation, disconnection, looseness, and so on.If there is an error, repair or replace termi-nal.


3. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E63.2. Turn ignition switch ON or OFF and check voltage between ABS

actuator and electric unit (control unit) connector E63 andground.

OK or NGOK >> GO TO 4.NG >> Repair harness or connectors.

SFIA2881E


Ground Measurement conditionMeasured

value

4 —Ignition switch ON

Battery voltage(Approx. 12 V)

Ignition switch OFF Approx. 0 V

TROUBLE DIAGNOSIS

BRC-31

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC


Check continuity between ABS actuator and electric unit (controlunit) connector E63 and ground.

OK or NGOK >> Perform ABS actuator and electric unit (control unit) self-diagnosis again.NG >> Repair harness or connectors.

Inspection 6 Brake Fluid Level Switch Circuit BFS00020


1. CHECK BRAKE FLUID LEVEL SENSOR

1. Turn ignition switch OFF and disconnect brake fluid level switchconnector E65. For brake fluid level switch connector, refer toDI-10, "Wiring Diagram — METER —" .

2. Check continuity between brake fluid level switch connectorE65.

OK or NGOK >> GO TO 2.NG >> Replace reservoir tank. Refer to BR-17, "DISASSEMBLY" .

SFIA2878E


Ground Continuity

16, 47 — Yes

SFIA2940E

Brake fluid level switch Measurement condition Continuity

1, 2When fulling the brake fluid up No

When the brake fluid is insufficient Yes

BRC-32


2. CHECK HARNESS

1. Turn ignition switch OFF and disconnect combination meter con-nector M23.

2. Check continuity between brake fluid level switch connectorE65, combination meter connector M23 and ground.

OK or NGOK >> INSPECTION ENDNG >> If the open or short in harness, repair or replace harness.

SFIA3053E

Brake fluid level switch(harness connector E65)

Combination meter(harness connector M23)

Continuity

1 32 Yes

Ground 32 No

2 Ground Yes

TROUBLE DIAGNOSIS

BRC-33

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Inspection 7 Parking Brake Switch Circuit BFS00021


1. CHECK PARKING BRAKE SWITCH

1. Turn ignition switch OFF and disconnect parking brake switchconnector (LHD model: B12, RHD model: B109). For brake fluidlevel switch, refer to DI-10, "Wiring Diagram — METER —" .

2. Check continuity between parking brake switch connector andground.

OK or NGOK >> GO TO 2.NG >> Replace parking brake switch.

2. CHECK HARNESS

1. Disconnect combination meter connector M23.2. Check continuity between parking brake switch connector (LHD

model: B12, RHD model: B109), combination meter connectorM23 and ground.


SFIA2935E

Measurement condition Continuity

When the parking brake lever is operated. Yes

When the parking brake lever is not operated. No

SFIA3055E

Parking brake switch(harness connector B12, B109)


Continuity

1 31 Yes

1 Ground No

BRC-34


Inspection 8 Warning lamp system BFS00022



Perform self-diagnosis of ABS actuator and electric unit (control unit). Refer to BRC-19, "Self-Diagnosis" .OK or NGOK >> GO TO 2.NG >> Check items displayed by self-diagnosis. Refer to BRC-19, "Display Item List" .

2. CHECK COMBINATION METER

Check if the indication and operation of combination meter are normal. Refer to DI-13, "Self-Diagnosis Modeof Combination Meter" .OK or NGOK >> INSPECTION ENDNG >> Repair or replace combination meter. Refer to DI-29, "Removal and Installation of Combination

Meter" .

Symptom 1: Excessive ABS Function Operation Frequency BFS00023

1. CHECK START

Check longitudinal brake force distribution using a brake tester. Refer to BR-37, "SERVICE DATA AND SPEC-IFICATIONS (SDS)" .OK or NGOK >> GO TO 2.NG >> Check the following system. If any malfunction is found, repair or replace malfunctioning parts.

● Brake booster. Refer to BR-19, "BRAKE BOOSTER" .● Hydraulic line. Refer to BR-12, "BRAKE TUBE AND HOSE" .● Front brake caliper. Refer to BR-25, "FRONT DISC BRAKE" .● Rear brake caliper. Refer to BR-31, "REAR DISC BRAKE" .

2. CHECK FRONT AND REAR AXLE

Make sure that there is no excessive play in the front and rear axles. Refer to Front: FAX-5, "WHEEL BEAR-ING INSPECTION" , Rear: RAX-5, "WHEEL BEARING INSPECTION" .OK or NGOK >> GO TO 3.NG >> Repair.

3. CHECK WHEEL SENSOR AND SENSOR ROTOR

Check wheel sensor and sensor rotor for the following.● Wheel sensor installation for damage● Wheel sensor rotor installation for damage● Wheel sensor connector connection● Wheel sensor harness inspectionOK or NGOK >> GO TO 4.NG >> ● Replace wheel sensor or sensor rotor.

● Repair harness.

TROUBLE DIAGNOSIS

BRC-35

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

4. CHECK ABS WARNING LAMP DISPLAY

Make sure that the ABS warning lamp is turned off after the ignition switch is turned ON or when driving.OK or NGOK >> NormalNG >> Perform self-diagnosis. Refer to BRC-19, "Self-Diagnosis" .

Symptom 2: Unexpected Pedal Reaction BFS00024

1. CHECK BRAKE PEDAL STROKE

Check brake pedal stroke. Refer to BR-6, "Inspection and Adjustment" .Is the stroke too big?YES >> ● Bleed air from brake piping. Refer to BR-11, "Bleeding Brake System" .

● Check brake pedal, brake booster, and master cylinder for mount play, looseness, brake sys-tem fluid leakage, etc. Repair if necessary. Refer to Brake pedal: BR-8, "COMPONENTS" ,brake booster and master cylinder: BR-20, "COMPONENTS" .

NO >> GO TO 2.

2. CHECK FUNCTION

Disconnect ABS actuator and electric unit (control unit) connector to deactivate ABS. Check if braking force isnormal in this condition. Connect connector after inspection.OK or NGOK >> GO TO procedure 3 “CHECK WHEEL SENSOR AND SENSOR ROTOR” of symptom 1. Refer to

BRC-34, "Symptom 1: Excessive ABS Function Operation Frequency" .NG >> Check the following system. If any malfunction is found, repair or replace malfunctioning parts.


Symptom 3: The Stopping Distance Is Long BFS00025

CAUTION:The stopping distance on slippery road surfaces might be longer with the ABS operating than whenthe ABS is not operating.

1. CHECK FUNCTION

Turn ignition switch OFF. Disconnect ABS actuator and electric unit (control unit) connector to deactivate ABS.In this condition, check stopping distance. After inspection, connect connector.OK or NGOK >> GO TO procedure 3 “CHECK WHEEL SENSOR AND SENSOR ROTOR” of symptom 1. Refer to

BRC-34, "Symptom 1: Excessive ABS Function Operation Frequency" .NG >> ● Bleed air from the brake piping. Refer to BR-11, "Bleeding Brake System" .

● Check the following system. If any malfunction is found, repair or replace malfunctioning parts.– Brake booster. Refer to BR-19, "BRAKE BOOSTER" .– Hydraulic line. Refer to BR-12, "BRAKE TUBE AND HOSE" .– Front brake caliper. Refer to BR-25, "FRONT DISC BRAKE" .– Rear brake caliper. Refer to BR-31, "REAR DISC BRAKE" .

BRC-36


Symptom 4: ABS Function Does Not Operate BFS00026

CAUTION:ABS does not operate when speed is 10 km/h (6 MPH) or lower.


Make sure that the ABS warning lamp is turned off after the ignition switch is turned ON or when driving.OK or NGOK >> GO TO procedure 3 “CHECK WHEEL SENSOR AND SENSOR ROTOR” of symptom1. Refer to

BRC-34, "Symptom 1: Excessive ABS Function Operation Frequency" .NG >> Perform self-diagnosis. Refer to BRC-19, "Self-Diagnosis" .

Symptom 5: Pedal Vibration or ABS Operation Sound Occurs BFS00027

CAUTION:Under the following conditions, ABS is activated and vibration is felt when brake pedal is lightlydepressed (just place a foot on it). However, this is normal.● When shifting gears● When driving on slippery road● During cornering at high speed● When passing over bumps or grooves [at approximately 50 mm (1.97 in) or more]● When pulling away just after starting engine [at approximately 10 km/h (6 MPH) or more]

1. SYMPTOM CHECK 1

Check if there is pedal vibration or operation noise when the engine is started.Do symptoms occur?YES >> GO TO 2.NO >> Perform self-diagnosis. Refer to BRC-19, "Self-Diagnosis" .

2. SYMPTOM CHECK 2

Check symptoms when electrical component (headlamps, etc.) switches are operated.Do symptoms occur?YES >> Check if there is a radio, antenna, antenna lead wire, or wiring close to the control unit. If there is,

move it farther away.NO >> GO TO procedure 3 ″CHECK WHEEL SENSOR AND SENSOR ROTOR″ of symptom 1. Refer to

BRC-34, "Symptom 1: Excessive ABS Function Operation Frequency" .

Symptom 6: ABS Warning Lamp Indication Is Not Normal BFS00028

NOTE:Lighting condition of ABS warning lamp refer to BRC-25, "BASIC INSPECTION 3 ABS WARNING LAMP ANDBRAKE WARNING LAMP INSPECTION" .

1. CHECK COMBINATION METER INDICATION

Check the combination meter indication and operation. Refer to DI-13, "Self-Diagnosis Mode of CombinationMeter" .OK or NGOK >> GO TO 2.NG >> Combination meter is malfunctioning. Check combination meter. Refer to DI-4, "COMBINATION

METERS" .

TROUBLE DIAGNOSIS

BRC-37

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC


Check the self-diagnostic results of ABS actuator and electric unit (control unit). Refer to BRC-19, "Self-Diag-nosis" .OK or NGOK >> GO TO procedure 1 of symptom 6.NG >> Check the items indicated with self-diagnosis.

BRC-38

[ABS]WHEEL SENSORS

WHEEL SENSORS PFP:47910

Removal and Installation BFS00029

1. Front wheel sensor (LH) 2. Front wheel sensor connector (LH) 3. Rear wheel sensor (LH)

4. Rear wheel sensor (RH) 5. Clip 6. Rear wheel sensor connector

A. Front B. Rear :Front

SFIA3014E

WHEEL SENSORS

BRC-39

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

REMOVALPay attention to the following when removing wheel sensor.CAUTION:● As much as possible, avoid rotating wheel sensor when removing it. Pull wheel sensors out with-

out pulling on sensor harness.● Take care to avoid damaging wheel sensor edges or rotor teeth. Remove wheel sensor first before

removing front or rear wheel hub. This is to avoid damage to wheel sensor wiring and loss of sen-sor function.

INSTALLATIONPay attention to the following when installing wheel sensor. Tighten installation bolts and nuts to the specifiedtorques.● When installing, make sure there is no foreign material such as iron chips on and in the mounting hole of

the wheel sensor. Make sure no foreign material has been caught in the sensor rotor. Remove any foreignmaterial and clean the mount.

● When installing wheel sensor, be sure to press rubber grommets in until they lock at locations shownabove in figure. When installed, harness must not be twisted.

BRC-40

[ABS]SENSOR ROTOR

SENSOR ROTOR PFP:47970

Removal and Installation BFS0002A

FRONTThe sensor rotors are built into the wheel hubs and are not removable. If damaged, replace wheel hub andbearing assembly. Refer to FAX-5, "Removal and Installation" .

REARRemoval● Follow procedure below to remove rear sensor rotor.

Remove side flange. Refer to RFD-14, "SIDE OIL SEAL" .Using a bearing replacer (commercial service tool) and puller (commercial service tool), remove sensorrotor from companion flange.

Installation● Follow procedure below to install rear sensor rotor.

Using a drift (SST), press rear sensor rotor onto rotor onto sideflange.Install side flange. Refer to RFD-14, "SIDE OIL SEAL" .

BRG1210D

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)

BRC-41

[ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) PFP:47660

Removal and Installation BFS0002B

CAUTION:● Before servicing, disconnect battery cables.● To remove brake tube, use flare nut wrench to prevent flare nuts and brake tube from being dam-

aged. To install, use flare nut torque wrench.● Do not apply excessive impact to ABS actuator and electric unit (control unit), such as dropping it.● Do not remove and install actuator by holding harness.● After work is completed, bleed air from brake tube and hose. Refer to BR-11, " Bleeding Brake Sys-

tem" .

REMOVAL1. Disconnect ABS actuator and electric unit (control unit) connector.2. Loosen brake tube flare nuts, then remove brake tubes from ABS actuator and electric unit (control unit).3. Remove ABS actuator and electric unit (control unit) bracket mounting bolts.4. Remove ABS actuator and electric unit (control unit) from vehicle.

1. To rear 2. From master cylinder secondaryside

3. To front left

4. From master cylinder primary side 5. To front right 6. ABS actuator and electric unit (con-trol unit)

7. Harness connector : Front

Refer to GI section for symbol marks in the figure.

SFIA3016E

BRC-42

[ABS]ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)

INSTALLATIONInstallation is the reverse order of removal.NOTE:After installing harness connector in the ABS actuator and electric unit (control unit), make sure connector issecurely locked.

PRECAUTIONS

BRC-43

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

[ESP/TCS/ABS]PRECAUTIONS PFP:00001

Precautions for Supplemental Restraint System (SRS) “AIR BAG” and “SEATBELT PRE-TENSIONER” BFS0002C

The Supplemental Restraint System such as “AIR BAG” and “SEAT BELT PRE-TENSIONER”, used alongwith a front seat belt, helps to reduce the risk or severity of injury to the driver and front passenger for certaintypes of collision. Information necessary to service the system safely is included in the SRS and SB section ofthis Service Manual.WARNING:● To avoid rendering the SRS inoperative, which could increase the risk of personal injury or death

in the event of a collision which would result in air bag inflation, all maintenance must be per-formed by an authorized NISSAN/INFINITI dealer.

● Improper maintenance, including incorrect removal and installation of the SRS, can lead to per-sonal injury caused by unintentional activation of the system. For removal of Spiral Cable and AirBag Module, see the SRS section.

● Do not use electrical test equipment on any circuit related to the SRS unless instructed to in thisService Manual. SRS wiring harnesses can be identified by yellow and/or orange harnesses orharness connectors.

Precautions for Brake System BFS0002D

● Recommended fluid is brake fluid “DOT 3” or “DOT 4”.● Never reuse drained brake fluid.● Be careful not to splash brake fluid on painted areas. If brake fluid is splashed, wipe it off and flush area

with water immediately.● Never use mineral oils such as gasoline or kerosene. They will ruin rubber parts of the hydraulic system.● Use a flare nut wrench when removing flare nuts, and use a flare

nut torque wrench when tighten flare nuts.● Brake system is an important safety part. If a brake fluid leak is

detected, always disassemble the affected part. If a malfunctionis detected, replace part with new one.

● Before working, turn ignition switch OFF and disconnect con-nector of ABS actuator and electric unit (control unit) or the bat-tery cables.

● When installing brake tube and hose, be sure to torque.WARNING:Clean brake pads and shoes with a waste cloth, then wipe witha dust collector.

Precautions for Brake Control BFS0002E

● Just after starting vehicle after ignition switch ON, brake pedal may vibrate or motor operating noise maybe heard from engine room. This is a normal status of operation check.

● When an error is indicated by ABS or another warning lamp, collect all necessary information from cus-tomer (what symptoms are present under what conditions) and check for simple causes before statingdiagnostic servicing. Besides electrical system inspection, check booster operation, brake fluid level, andoil leaks.

● If tyre size and type are used in an improper combination, or brake pads are not Genuine NISSAN parts,stopping distance or steering stability may deteriorate.

● If there is a radio, antenna, or antenna lead-in wire (including wiring) near control module, ABS functionmay have a malfunction or error.

● If aftermarket parts (car stereo, CD player, etc.) have been installed, check for incidents such as harnesspinches, open circuits, and improper wiring.

● If non-standard suspension parts (shock absorber, strut, spring, bushing, etc.) and reinforcements (rollbar, tower bar, etc.) are attached, or if suspension parts deteriorate significantly, ESP may not operatenormally, ESP OFF indicator lamp and SLIP indicator lamp may turn on.

● If non-standard engine components (muffler, etc.) are attached, ESP may not operate normally, ESP OFFindicator lamp and SLIP indicator lamp may turn on.

SBR820BA

BRC-44

[ESP/TCS/ABS]PRECAUTIONS

● If battery is removed or steering angle sensor is disconnected, power to steering angle sensor is lost andthe screen goes into steering angle sensor safe mode.

● When screen goes into steering angle sensor safe mode, perform “Adjustment of Steering Angle SensorNeutral Position” with CONSULT-II and check that ESP OFF indicator turns off. Additionally, perform self-diagnosis, check that only “Steering Angle Sensor Safe Mode” is shown for self-diagnostic result, andthen delete the memory. (If the self-diagnostic result shows an indication other than “Steering Angle Sen-sor Safe Mode”, repair the relevant part and restart self-diagnosis.) The steering angle sensor is releasedand returns to normal condition by performing the above operation.

● When checking, if only “Steering Angle Sensor Safe Mode” is shown in the self-diagnostic result and ESPOFF indicator is off, delete history of malfunction. This happens when battery power supply is lost and thescreen goes into Steering Angle Sensor Safe Mode, and then screen returns to normal mode automati-cally by driving the vehicle in a straight forward direction [for approximately 30 seconds at 20 km/h (12MPH) or more] after power is supplied again.

PREPARATION

BRC-45

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

PREPARATION PFP:00002

Special Service Tools (SST) BFS0002F

Tool numberTool name

Description

GG94310000Flare nut torque wrencha: 10mm (0.39 in) / 12 mm (0.47 in)

Installing each brake piping





KV40104710Drifta: 76 mm (2.99 in) dia.b: 68.5 mm (2.697 in) dia.


S-NT406

ZZA0701D

ZZA0832D

ZZA0832D

BRC-46

[ESP/TCS/ABS]ON-VEHICLE SERVICE

ON-VEHICLE SERVICE PFP:00000

Adjustment of Steering Angle Sensor Neutral Position BFS0002G

In case of doing work that applies to the list below, make sure to adjust neutral position of steering angle sen-sor before running vehicle.

×: Required–: Not required

CAUTION:To adjust neutral position of steering angle sensor, make sure to use CONSULT-II.(Adjustment cannot be done without CONSULT-II.)1. Stop vehicle with front wheels in straight-ahead position.2. Connect CONSULT-II and CONSULT-II CONVERTER to data link connector on vehicle.3. Turn ignition switch ON (do not start engine) and touch “ABS”, “WORK SUPPORT” and “ST ANGLE SEN-

SOR ADJUSTMENT” on CONSULT-II screen in this order.

4. Touch “START”.CAUTION:Do not touch steering wheel while adjusting steering anglesensor.

5. After approximately 10 seconds, touch “END”. (After approxi-mately 60 seconds, it ends automatically.)

6. Turn ignition switch OFF, then turn it ON again.CAUTION:Be sure to perform above operation.

7. Run vehicle with front wheels in straight-ahead position, thenstop.

8. Select “DATA MONITOR”, “SELECTION FROM MENU”, and “STR ANGLE SIG” on CONSULT-II screen.Then make sure “STR ANGLE SIG” is within 0±3.5°. If value is more than specification, repeat steps 1 to7.

9. Erase memory of ABS actuator and electric unit (control unit) and ECM. Refer to BRC-65, "ERASE MEM-ORY" (ESP), EC-998, "TROUBLE DIAGNOSIS" (YD25DDTi model), EC-77, "TROUBLE DIAGNOSIS"(VQ40DE model).

10. Turn ignition switch OFF.

Situation Adjustment of Steering Angle Sensor Neutral Position

Removing/Installing ABS actuator and electric unit (control unit) –

Replacing ABS actuator and electric unit (control unit) ×

Removing/Installing steering angle sensor ×

Removing/Installing steering components ×

Removing/Installing suspension components ×

Change tyres to new ones –

Tyre rotation –

Adjustment wheel alignment ×

SFIA0371E

ON-VEHICLE SERVICE

BRC-47

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Calibration of Decel G Sensor BFS0002H

If case of doing work that applies to the list below, make sure to calibration of decel G sensor before runningvehicle.

×: Required–: Not required

CAUTION:To calibrate decel G sensor, make sure to use CONSULT- II (Adjustment cannot be done without CON-SULT-II)1. Stop vehicle with front wheels in straight-ahead position.

CAUTION:● Keep all tyres inflated to correct pressures. Adjust the tyre pressure to the specified pressure

value.● See that there is on-load in vehicle other than the driver (or equivalent weight placed in driver's

position).2. Connect CONSULT-II and CONSULT-II CONVERTER to data link connector on vehicle.3. Turn ignition switch ON (do not start engine) and touch “ABS”, “WORK SUPPORT” and “DECEL G SEN

CALIBRATION” on CONSULT-II screen in this order.

4. Touch “START”.5. After approximately 10 seconds, touch “END”. (After approxi-

mately 60 seconds, it ends automatically.)6. Turn ignition switch OFF, then turn it ON again.

CAUTION:Be sure to perform above operation.

7. Run vehicle with front wheels in straight-ahead position, thenstop.

8. Select “DATA MONITOR”, “SELECTION FROM MENU”, and“DECEL G SEN” on CONSULT-II screen. Then make sure that“DECEL G SEN” is within ±0.08G. If value is more than specifi-cation, repeat steps 1 to 5.

9. Erase memory of ABS actuator and electric unit (control unit) and ECM. Refer to BRC-65, "ERASE MEM-ORY" (ESP), EC-998, "TROUBLE DIAGNOSIS" (YD25DDTi model), EC-77, "TROUBLE DIAGNOSIS"(VQ40DE model).

10. Turn ignition switch OFF.

Situation Calibration of Decel G Sensor

Removing/Installing ABS actuator and electric unit (control unit) ×

Removing/Installing steering components –

Removing/Installing suspension components –

Change tyres to new ones –

Tyre rotation –

Adjusting wheel alignment –

Removing/Installing Yaw rate/side/decel G sensor ×

SFIA1162E

BRC-48

[ESP/TCS/ABS]SYSTEM DESCRIPTION

SYSTEM DESCRIPTION PFP:00000

System Diagram BFS0002I

Functions BFS0002J

ABS● The Anti-Lock Brake System is a function that detects wheel revolution while braking, and it improves

handling stability during sudden braking by electrically preventing 4 wheels lock. Maneuverability is alsoimproved for avoiding obstacles.

● Electrical system diagnosis by CONSULT-II is available.EBD● Electronic Brake Distributor is a function that detects subtle slippages between the front and rear tyre dur-

ing braking, and it improves handling stability by electrically controlling the brake fluid pressure whichresults in reduced rear tyre slippage.

● Electrical System Diagnosis by CONSULT-II is available.TCS● ABS actuator and electric unit (control unit) detects a spin at drive wheels by comparing wheel speed sig-

nals from all 4 wheels. At this time, output from control unit controls brake fluid pressure to wheels whilecutting fuel to engine and closing throttle valve to reduce engine torque. Furthermore, throttle position iscontinuously controlled to insure appropriate engine torque at all times.

● During TCS operation, it informs driver of system operation by flashing SLIP indicator lamp.● Electrical System Diagnosis by CONSULT-II is available.ESP● In addition to TCS/ABS function, ESP detects driver's steering operation amount and brake pedal travel

from steering angle sensor and pressure sensor. Using information from yaw rate/side/decel G sensorand wheel sensor, ESP judges driving condition (conditions of under steer and over steer) to improve sta-bility by controlling brake application to 4 wheels and engine output.

● During ESP operation, SLIP indicator lamp flashes to inform driver of ESP operation.● Electrical System Diagnosis by CONSULT-II is available.

SFIA2867E

SYSTEM DESCRIPTION

BRC-49

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Operation That Is Not “System Error” BFS0002K

ABS● When starting engine or just after starting vehicle, brake pedal may vibrate or the motor operating noise

may be heard from engine room. This is a normal states of the operation check.● During ABS operation, brake pedal lightly vibrates and a mechanical noise may be heard. This is normal.● Stopping distance may be longer than that of vehicles without ABS when vehicle drives on rough, gravel,

or snow-covered (fresh, deep snow) roads.TCS● During TCS operation, body and brake pedal lightly vibrate and mechanical noises may be heard. This is

normal.● Depending on road circumstances, driver may have a sluggish feel. This is normal, because optimum

traction has highest priority under TCS operation.● When vehicle is passing through a road where surface friction coefficient varies, downshifting or depress-

ing accelerator pedal fully may activate TCS temporarily.ESP● During ESP operation, body and brake pedal lightly vibrate and mechanical noise may be heard. This is

normal.● If vehicle is rotated on turn table, or rolled and rocked on ship, ABS warning lamp, ESP OFF indicator

lamp and SLIP indicator lamp may turn on. In this case, start engine on normal road again. If ABS warninglamp, ESP OFF indicator lamp and SLIP indicator lamp turn off after restart, it is normal.

● When starting TCS or ESP under rapid acceleration or hard turn, operating noise by brake pedal is gener-ated. However, this is not malfunction. This is because TCS and ESP are functioning normally.

● When driving in steep slope such as bank, ABS warning lamp, ESP OFF indicator lamp and SLIP indica-tor lamp may turn on. In this case, start engine on normal road again. If ABS warning lamp, ESP OFF indi-cator lamp and SLIP indicator lamp turn off after restart, it is normal.

● A malfunction oriented yaw rate/side/decel G sensor may occur under hard turn like spin turn, rapid accel-eration turn, drift run, etc when ESP function is OFF (ESP OFF switch ON). It is not malfunction if it is pos-sible to return to a normal position after restarting engine. Then erase the memory of Self-Diagnosis.Refer to BRC-65, "ERASE MEMORY" .

Fail-Safe Function BFS0002L

ABS, EBDIn case of electrical malfunction with the ABS, ABS warning lamp, ESP OFF indicator lamp and SLIP indicatorlamp will turn on. In case of electrical incidents with EBD, ABS warning lamp, ESP OFF indicator lamp, SLIPindicator lamp and brake warning lamp will turn on. Simultaneously, the ESP/TCS/ABS become one of the fol-lowing conditions of the Fail-Safe function.1. For ABS malfunction, only the EBD is activated and the condition of the vehicle is the same condition of

vehicles without ESP/TCS/ABS equipment.NOTE:ABS self-diagnosis sound may be heard. That is a normal condition because a self-diagnosis for “Ignitionswitch ON” and “The first starting” are being performed.

2. For EBD malfunction, the EBD and ABS become inoperative, and the condition of the vehicle is the sameas the condition of vehicles without ESP/TCS/ABS, EBD equipment.

ESP/TCSIn case of ESP/TCS system malfunction, the ESP OFF indicator lamp and SLIP indicator lamp or only ESPOFF indicator lamp are turned on, and the condition of the vehicle is the same as the condition of vehicleswithout ESP/TCS equipment. In case of electrical malfunction with the ESP/TCS system, the ABS control con-tinues to operate normally without ESP/TCS control.CAUTION:If the Fail-Safe function is activated, then perform the self-diagnosis for ESP/TCS/ABS control system.

BRC-50

[ESP/TCS/ABS]SYSTEM DESCRIPTION

Hydraulic Circuit Diagram BFS0002M

SFIA3019E

CAN COMMUNICATION

BRC-51

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

CAN COMMUNICATION PFP:23710

System Description BFS0002N

CAN (Controller Area Network) is a serial communication line for real time application. It is an on-vehicle mul-tiplex communication line with high data communication speed and excellent error detection ability. Many elec-tronic control units are equipped onto a vehicle, and each control unit shares information and links with othercontrol units during operation (not independent). In CAN communication, control units are connected with 2communication lines (CAN H line, CAN L line) allowing a high rate of information transmission with less wiring.Each control unit transmits/receives data but selectively reads required data only. Refer to LAN-39, "CANCommunication Unit for Diesel Engine Models" .

BRC-52

[ESP/TCS/ABS]TROUBLE DIAGNOSIS

TROUBLE DIAGNOSIS PFP:00004

How to Perform Trouble Diagnosis for Quick and Accurate Repair BFS0002O

INTRODUCTION● Most important point to perform diagnosis is to understand systems (control and mechanism) in vehicle

thoroughly.

● It is also important to clarify customer complaints before inspec-tion.First of all, reproduce symptom, and understand it fully.Ask customer about his/her complaints carefully. In some cases,it will be necessary to check symptom by driving vehicle withcustomer.NOTE:Customers are not professionals. Do not assume “maybe cus-tomer means...” or “maybe customer mentioned this symptom”.

● It is essential to check symptoms right from beginning in order torepair a malfunction completely.For an intermittent malfunction, it is important to reproducesymptom based on interview with customer and past examples.Do not perform inspection on ad hoc basis. Most intermittentmalfunctions are caused by poor contacts. In this case, it will beeffective to shake suspected harness or connector by hand.When repairs are performed without any symptom check, noone can judge if malfunction has actually been eliminated.

● After diagnosis, make sure to perform “erase memory”. Refer toBRC-65, "ERASE MEMORY" .

● For an intermittent malfunction, move harness or harness con-nector by hand to check poor contact or false open circuit.

● Always read “GI General Information” to confirm general precautions. Refer to GI-4, "General Precau-tions" .

EFJ0028D

SEF233G

TROUBLE DIAGNOSIS

BRC-53

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

DIAGNOSIS FLOWCHART

SFIA2869E

BRC-54


ASKING COMPLAINTS● Complaints against malfunction vary depending on each person.

It is important to clarify customer complaints.● Ask customer about what symptoms are present and under

what conditions. Use information to reproduce symptom whiledriving.

● It is also important to use the diagnosis sheet so as not to missinformation.

EXAMPLE OF DIAGNOSIS SHEET

SBR339B

SFIA0791E

TROUBLE DIAGNOSIS

BRC-55

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Component Installation Location BFS0002P

SFIA3020E

BRC-56


Schematic BFS0002Q

MFWA0101E

TROUBLE DIAGNOSIS

BRC-57

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Wiring Diagram — ESP — BFS0002R

MFWA0147E

BRC-58


MFWA0148E

TROUBLE DIAGNOSIS

BRC-59

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

MFWA0140E

BRC-60


MFWA0105E

TROUBLE DIAGNOSIS

BRC-61

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

MFWA0149E

BRC-62


MFWA0150E

TROUBLE DIAGNOSIS

BRC-63

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

MFWA0151E

BRC-64


CONSULT-II Functions BFS0002S

CONSULT-II MAIN FUNCTIONIn a diagnosis function (main function), there are “WORK SUPPORT”, “SELF-DIAG RESULTS”, “DATA MONI-TOR”, “CAN DIAG SUPPORT MNTR”, “ACTIVE TEST”, “FUNCTION TEST”, “ECU PART NUMBER”.

CONSULT-II BASIC OPERATION PROCEDURE1. Touch “ABS” in the “SELECT SYSTEM” screen.

2. Select the required diagnostic location from the “SELECT DIAGMODE” screen.

Diagnostictest mode

Function Reference

WORK SUP-PORT

This mode enables a technician to adjust some devices faster and more accuratelyby following the indications on CONSULT-II.

BRC-46, "ON-VEHICLE SER-VICE"

SELF-DIAGRESULTS

Self-diagnostic results can be read and erased quickly. BRC-65, "Self-Diagnosis"

DATA MONI-TOR

Input/Output data in the ABS actuator and electric unit (control unit) can be read. BRC-68, "Data Monitor"

CAN DIAGSUPPORT

MNTRThe results of transmit/receive diagnosis of communication can be read.

LAN-16, "CAN DiagnosticSupport Monitor"

ACTIVE TESTDiagnostic Test Mode in which CONSULT-II drives some actuators apart from theABS actuator and electric unit (control unit) and also shifts some parameters in aspecified range.

BRC-71, "Active Test"

FUNCTIONTEST

Performed by CONSULT-II instead of a technician to determine whether each sys-tem is “OK” or “NG”.

Separate volume “CONSULT-II OPERATION MANUAL

(FUNCTION TEST)”

ECU PARTNUMBER

ABS actuator and electric unit (control unit) part number can be read. —

BCIA0030E

BCIA0031E

TROUBLE DIAGNOSIS

BRC-65

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Self-Diagnosis BFS0002T

OPERATION PROCEDURE1. Turn ignition switch OFF.2. Connect CONSULT-II and CONSULT-II CONVERTER to data link connector.3. Turn ignition switch ON.4. Start engine and drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute.5. After stopping vehicle, with the engine running, touch “START (NISSAN BASED VHCL)”, “ABS”, “SELF-

DIAG RESULT” in order on the CONSULT-II screen.CAUTION:If “START (NISSAN BASED VHCL)” is touched immediately after starting engine or turn on theignition switch, “ABS” might not be displayed in the “SELECT SYSTEM” screen. In this case,repeat the operation from step 1.

6. The self-diagnostic results are displayed. (Touch “PRINT” to print out self-diagnostic results, if necessary.)● Check ABS warning lamp, ESP OFF indicator lamp and SLIP indicator lamp if “NO FAILURE” is dis-

played.7. Perform the appropriate inspection from display item list, and repair or replace the malfunctioning compo-

nent. Refer to BRC-66, "DISPLAY ITEM LIST" .8. Start engine and drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute.

CAUTION:When the wheel sensor malfunctions, after inspecting the wheel sensor system, the ABS warninglamp, brake warning lamp, slip indicator lamp and ESP OFF indicator lamp will not turn off evenwhen the system is normal unless the vehicle is driving at approximately 30 km/h (19 MPH) ormore for approximately 1 minute.

ERASE MEMORY1. Turn ignition switch OFF.2. Start engine and touch “START (NISSAN BASED VHCL)”, “ABS”, “SELF-DIAG RESULTS”, “ERASE

MEMORY” in order on the CONSULT-II screen to erase the error memory.If “ABS” is not indicated, go to GI-50, "CONSULT-II Data Link Connector (DLC) Circuit" .CAUTION:If the error memory is not erased, re-perform the operation from step 4.

3. Perform self-diagnosis again, and make sure that diagnostic memory is erased.4. Drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute as the final inspection, and make

sure that the ABS warning lamp, ESP OFF indicator lamp and SLIP indicator lamp turn off.CAUTION:ESP OFF switch should not stay “ON” position.

BRC-66


DISPLAY ITEM LISTSelf-diagnostic item Malfunction detecting condition Check item

RR RH SENSOR- 1 Circuit of rear RH wheel sensor is open.

BRC-75, "Inspection 1Wheel Sensor Circuit"(Note 1)

RR LH SENSOR- 1 Circuit of rear LH wheel sensor is open.

FR RH SENSOR- 1 Circuit of front RH wheel sensor is open.

FR LH SENSOR- 1 Circuit of front LH wheel sensor is open.

RR RH SENSOR- 2

When the circuit in the rear RH wheel sensor is short-circuited.Or when the sensor power voltage is outside the standard. Whenthe distance between the wheel sensor and sensor rotor is toolarge and the sensor pulse cannot be recognized by the controlunit.

RR LH SENSOR- 2

When the circuit in the rear LH wheel sensor is short-circuited. Orwhen the sensor power voltage is outside the standard. Whenthe distance between the wheel sensor and sensor rotor is toolarge and the sensor pulse cannot be recognized by the controlunit.

FR RH SENSOR- 2

When the circuit in the front RH wheel sensor is short-circuited.Or when the sensor power voltage is outside the standard. Whenthe distance between the wheel sensor and sensor rotor is toolarge and the sensor pulse cannot be recognized by the controlunit.

FR LH SENSOR- 2

When the circuit in the front LH wheel sensor is short-circuited.Or when the sensor power voltage is outside the standard. Whenthe distance between the wheel sensor and sensor rotor is toolarge and the sensor pulse cannot be recognized by the controlunit.

BATTERY VOLTAGE[MALFUNCTION]

ABS actuator and electric unit (control unit) power voltage is toolow.

BRC-87, "Inspection 9ABS Actuator and Elec-tric Unit (Control Unit)Power Supply andGround Circuit"

CONTROLLER FAILUREInternal malfunction of ABS actuator and electric unit (controlunit)

BRC-77, "Inspection 3ABS actuator and elec-tric unit (control unit)"

PUMP MOTOR

During actuator motor operation with ON, when actuator motorturns OFF or when control line for actuator motor relay is open. BRC-86, "Inspection 8

ABS Motor, Motor Relay,and Circuit"During actuator motor operation with OFF, when actuator motor

turns ON or when control line for relay is shorted to ground.

G-SENSORG sensor is malfunctioning, or signal line of G sensor is open orshorted.

BRC-82, "Inspection 6Yaw Rate/Side/Decel Gsensor Circuit"

ABS SENSOR[MALFUNCTION SIGNAL]

Wheel sensor input is malfunction.BRC-75, "Inspection 1Wheel Sensor Circuit"(Note 1)

STOP LAMP SW Stop lamp switch circuit is open or shorted.BRC-89, "Inspection 10Stop Lamp Switch Cir-cuit"

TROUBLE DIAGNOSIS

BRC-67

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

FR LH IN ABS SOLWhen the control unit detects an error in the front LH inlet Sole-noid circuit.

BRC-84, "Inspection 7Solenoid, ESP Change-Over Valve and ActuatorRelay Circuit"

FR LH OUT ABS SOLWhen the control unit detects an error in the front LH outlet Sole-noid circuit.

FR RH IN ABS SOLWhen the control unit detects an error in the front RH inlet Sole-noid circuit.

FR RH OUT ABS SOLWhen the control unit detects an error in the front RH outlet Sole-noid circuit.

RR LH IN ABS SOLWhen the control unit detects an error in the rear LH inlet Sole-noid circuit.

RR LH OUT ABS SOLWhen the control unit detects an error in the rear LH outlet Sole-noid circuit.

RR RH IN ABS SOLWhen the control unit detects an error in the rear RH inlet Sole-noid circuit.

RR RH OUT ABS SOLWhen the control unit detects an error in the rear RH outlet Sole-noid circuit.

ENGINE SIGNAL 1Based on the signal from ECM, ABS actuator and electric unit(control unit) judges that engine fuel cut system is malfunction-ing.

BRC-77, "Inspection 2Engine System"

ENGINE SIGNAL 2Based on the signal from ECM, ABS actuator and electric unit(control unit) judges that engine ECM system is malfunctioning.

ENGINE SIGNAL 3Based on the signal from ECM, ABS actuator and electric unit(control unit) judges that engine CAN system is malfunctioning.

ENGINE SIGNAL 4Based on the signal from ECM, ABS actuator and electric unit(control unit) judges that engine torque down system is malfunc-tioning.

ENGINE SIGNAL 6Based on the signal from ECM, ABS actuator and electric unit(control unit) judges that engine control system is malfunctioning.

ACTUATOR RLY When the control unit detects an error in the actuator relay circuit.


PRESS SEN CIRCUITPressure sensor signal line is open or shorted, sensor powervoltage is unusual, or pressure sensor is malfunctioning.

BRC-77, "Inspection 4Pressure Sensor Circuit"

ST ANGLE SEN CIRCUITNeutral position of steering angle sensor is dislocated, or steer-ing angle sensor is malfunctioning.

BRC-80, "Inspection 5Steering Angle SensorCircuit"

ST ANGLE SEN SIGNALNeutral position correction of steering angle sensor is not fin-ished.

BRC-46, "Adjustment ofSteering Angle SensorNeutral Position"

YAW RATE SENSORYaw rate/side/decel G sensor has generated an error, or yawrate/side/decel G sensor signal line is open or shorted. BRC-82, "Inspection 6

Yaw Rate/Side/Decel Gsensor Circuit"SIDE G-SEN CIRCUIT

Yaw rate/side/decel G sensor is malfunctioning, or signal line ofyaw rate/side/decel G sensor is open or shorted.

BR FLUID LEVEL LOWBrake fluid level drops or circuit between ABS actuator and elec-tric unit (control unit) and brake fluid level switch is open orshorted.

BRC-90, "Inspection 11Brake Fluid Level SwitchCircuit"

ST ANG SEN COM CIRCAN communication line or steering angle sensor has generatedan error.

BRC-91, "Inspection 12CAN CommunicationCircuit"

ST ANGL SEN SAFE When steering angle sensor is in safe mode.BRC-94, "Inspection 16Steering Angle SensorSafe Mode"

DECEL G SEN SET Neutral position correction of Decel G sensor is not finished.BRC-47, "Calibration ofDecel G Sensor"

Self-diagnostic item Malfunction detecting condition Check item

BRC-68


Note 1: After completing repairs of shorted sensor circuit, when ignition switch is turned ON, ABS warning lamp turns on. Make sure thatABS warning lamp turns off while driving vehicle at approximately 30 km/h (19 MPH) or more for approximately 1 minute according toself-diagnosis procedure. In addition, if wheel sensor 2 is displayed for wheels, check wheel sensor circuit and also check control unitpower voltage.Note 2: When errors are detected in several systems, including CAN communication system [U1000], troubleshoot CAN communicationcircuit. Refer to BRC-91, "Inspection 12 CAN Communication Circuit" .

Data Monitor BFS0002U

OPERATION PROCEDURE1. Touch “START (NISSAN BASED VHCL)”, “ABS”, “DATA MONITOR” in order on CONSULT-II screen.

CAUTION:When “START (NISSAN BASED VHCL)” is touched immediately after starting engine or turning onignition switch, “ABS” might not be displayed in the “SELECT SYSTEM” screen. In this case,repeat the operation from step 1.

2. At the monitor item selection screen, touch one of the items “ECU INPUT SIGNALS”, “MAIN SIGNALS” or“SELECTION FROM MENU”.

3. Touch “START” to proceed to the data monitor screen.

DISPLAY ITEM LISTCAUTION:The display shows the control unit calculation data, so a normal value might be displayed even in theevent the output circuit (harness) is open or short-circuited.

CV1Front side ESP switch-over solenoid valve (cut valve 1) is openor shorted, or control line is open or shorted to power supply orground.


CV2Rear side ESP switch-over solenoid valve (cut valve 2) is open orshorted, or control line is open or shorted to power supply orground.

SV1Front side ESP switch-over solenoid valve (suction valve 1) isopen or shorted, or control line is open or shorted to power sup-ply or ground.

SV2Rear side ESP switch-over solenoid valve (suction valve 2) isopen or shorted, or control line is open or shorted to power sup-ply or ground.

VARIANT CODING In a case where VARIANT CODING is different.ABS actuator and elec-tric unit (control unit) andcircuit

CAN COMM CIRCUIT[U1000]

● CAN communication line is open or shorted.

● ABS actuator and electric unit (control unit) internal malfunc-tion.

● Battery voltage for ECM is suddenly interrupted for approxi-mately 0.5 seconds or more.

BRC-91, "Inspection 12CAN CommunicationCircuit" (Note 2)

Self-diagnostic item Malfunction detecting condition Check item

E: ECU INPUT SIGNALS M: MAIN SIGNALS S: SELECTION FROM MENU

SELECTMONITOR


Data monitor


E, M, S

FR LH SENSORFR RH SENSORRR LH SENSORRR RH SENSOR

Wheel speed

0 [km/h] Vehicle stopped

Nearly matches the speed-ometer display (± 10% orless)

Vehicle running(Note 1)

E, M, S DECEL G-SENLongitudinal acceleration detectedby Decel G Sensor

Vehicle stopped Approx. 0G

Vehicle running -1.7 - +1.7G

E, M, S STOP LAMP SW Brake pedal operationBrake pedal depressed ON

Brake pedal not depressed OFF

TROUBLE DIAGNOSIS

BRC-69

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

E, M, S BATTERY VOLTBattery voltage supplied to the ABSactuator and electric unit (controlunit)

Ignition switch ON 10 – 16 V

E, M, S GEAR A/T gear position

1st gear2nd gear3rd gear4th gear5th gear

12345

E, M, S SLCT LVR POSI A/T shift position

P positionR positionN positionD position

PRND

E, M, S ENGINE SPEED With the engine running

With the engine stopped. 0 rpm

Engine runningAlmost in accor-

dance with tachom-eter display

E, M, S OFF SWESP OFF switchON/OFF condition

ESP OFF switch ON(When ESP OFF indicatorlamp is ON.)

ON

ESP OFF switch OFF(When ESP OFF indicatorlamp is OFF.)

OFF

E, M, S YAW RATE SENYaw rate detected by yaw rate/side/decel G sensor

Vehicle stopped Approx. 0 d/s

During driving – 100 to 100 d/s

E, S ACCEL POS SIGOpen/close condition of throttlevalve (linked with accelerator pedal)

Accelerator pedal notdepressed (ignition switchis ON)

0%

Accelerator pedaldepressed (ignitionswitch is ON)

0 – 100%

E, S SIDE G-SENSORTransverse G detected by yaw rate/side/decel G sensor

Vehicle stopped Approx. 0 m/s2

Vehicle running –16.7 - 16.7 m/s2

E, S STR ANGLE SIGSteering angle detected by steeringangle sensor

Straight-ahead condition Approx. 0 °

Steering – 720 to 720°

E, S PRESS SENSORBrake fluid pressure detected bypressure sensor

With ignition switch turnedON and brake pedalreleased

Approx. 0 bar

With ignition switch turnedON and brake pedaldepressed

– 0 to 170 bar

E, S FLUID LEV SW Brake fluid level switch status

When brake fluid levelswitch ON.

ON

When brake fluid levelswitch OFF.

OFF


SELECTMONITOR


Data monitor


BRC-70


M, S

FR RH IN SOLFR RH OUT SOLFR LH IN SOLFR LH OUT SOLRR RH IN SOLRR RH OUT SOLRR LH IN SOLRR LH OUT SOL

Operation status of all solenoidvalve

Actuator (solenoid valve) isactive (“Active Test ”withCONSULT-II) or actuatorrelay is inactive (in fail-safemode).

ON

When the actuator (sole-noid valve) is not activeand actuator relay is active(ignition switch ON).

OFF

M, S MOTOR RELAYMotor and motor relay operationstatus

When the motor relay andmotor are operating.

ON

When the motor relay andmotor are not operating.

OFF

M, S ACTUATOR RLY Actuator relay operation status

When the actuator relay isoperating.

ON

When the actuator relay isnot operating.

OFF

M, S ABS WARN LAMPABS warning lamp status(Note 2)

When ABS warning lamp isON.

ON

When ABS warning lamp isOFF.

OFF

M, S OFF LAMPESP OFF indicator lamp status(Note 2)

When ESP OFF indicatorlamp is ON.

ON

When ESP OFF indicatorlamp is OFF.

OFF

M, S SLIP LAMPSLIP indicator lamp status(Note 2)

When SLIP indicator lampis ON.

ON

When SLIP indicator lampis OFF.

OFF

S EBD WARN LAMPBrake warning lamp on condition(Note 2)

Brake warning lamp ON ON

Brake warning lamp OFF OFF

S 4WD FAIL REQ ETS error statusETS error ON

ETS normal OFF

S

CV1CV2SV1SV2

ESP switch-over valve condition

When actuator (switch-over valve) is active(“ACTIVE TEST” withCONSULT-II) or actuatorrelay is inactive (when infail-safe mode).

ON

When actuator (switch-over valve) is not activeand actuator relay is active(ignition switch ON).

OFF

S 2WD/4WD Drive axle2WD model 2WD

AWD model 4WD

SPRESS SEN2

Brake fluid pressure detected bypressure sensor

With ignition switch turnedON and brake pedalreleased

Approx.0 bar

With ignition switch turnedON and brake pedaldepressed

-0 to 170 bar


SELECTMONITOR


Data monitor


TROUBLE DIAGNOSIS

BRC-71

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Note 1: Confirm tyre pressure is normal.Note 2: On and off timing for warning lamp and indicator lamp. Refer to BRC-74, "BASIC INSPECTION 3 ABS WARNING LAMP,BRAKE WARNING LAMP, ESP OFF INDICATOR LAMP AND SLIP INDICATOR LAMP INSPECTION" .

Active Test BFS0002V

CAUTION:● Do not perform active test while driving vehicle.● Make sure to completely bleed air from brake system.● Active test cannot be performed when EBD, ABS, TCS and ESP operation is malfunction.● ABS and brake warning lamps turn on during the active test.

OPERATION PROCEDURE1. Touch “START (NISSAN BASED VHCL)”, “ABS”, “ACTIVE TEST” in order on the CONSULT-II screen. If

“ABS” is not indicated, go to GI-50, "CONSULT-II Data Link Connector (DLC) Circuit" .CAUTION:When “START (NISSAN BASED VHCL)” is touched immediately after starting engine or turning onignition switch, “ABS” might not be displayed in the “SELECT SYSTEM” screen. In this case,repeat the operation from step 1.

2. Touch “SELECT TEST ITEM” is displayed.3. Touch necessary test item.

4. While “MAIN SIGNALS” indication is inverted, touch “START”.5. “ACTIVE TEST” screen will be displayed so perform the following test.

● Solenoid valve● ABS motor

S EBD SIGNAL EBD operationEBD active ON

EBD not active OFF

S ABS SIGNAL ABS operationABS active ON

ABS not active OFF

S TCS SIGNAL TCS operationTCS active ON

TCS not active OFF

S VDC SIGNAL ESP operationESP active ON

ESP not active OFF

S

EBD FAIL SIGABS FAIL SIGTCS FAIL SIGVDC FAIL SIG

System error signal statusMalfunctions condition(When system is malfunc-tioning)

OFF

S CRANKING SIG CRANKING statusCranking ON

Not cranking OFF


SELECTMONITOR


Data monitor


SFIA2162E

BRC-72


NOTE:● When active test is performed while depressing the pedal, the pedal depression amount will change.

This is normal. (Only solenoid valve and ABS motor)● “TEST IS STOPPED” is displayed 10 seconds after operation start.● After “TEST IS STOPPED” is displayed, to perform test again, touch “BACK” and repeat step 3.

SOLENOID VALVENOTE:The example shown is for front right wheel. The procedure for the other wheels is the same as given below.● When performing an active test of the ABS function, select the

main item for each test item. In addition, when performing anactive test of the ESP/TCS function, select the item menu foreach test item.

● For ABS solenoid valve, touch “UP”, “KEEP”, and “DOWN” onthe display screen. For ABS solenoid valve (ACT), touch “UP”,“ACTUATOR UP”, “ACTUATOR KEEP” and confirm that sole-noid valves (IN, OUT, CV1, SV1) operate as shown in the tablebelow.

Solenoid Valve Operation Chart

*: ON for 1 to 2 seconds after the touch, and then OFF

ABS MOTORTouch “ON” and “OFF” on the screen. Make sure ABS motor relayand actuator relay operates as shown in table below.

SFIA0678E

Operation

ABS solenoid valve ABS solenoid valve (ACT)

UP KEEP DOWN UPACTUATOR

UPACTUATOR

KEEP

FR RH IN SOL OFF ON ON OFF OFF OFF

FR RH OUT SOL OFF OFF ON* OFF OFF OFF

CV 1 — — — OFF ON ON

SV 1 — — — OFF ON* OFF

Operation ON OFF

MOTOR RELAY ON OFF

ACTUATOR RLY ON ON

SFIA0593E

TROUBLE DIAGNOSIS

BRC-73

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

For Fast and Accurate Diagnosis BFS0002W

PRECAUTIONS FOR DIAGNOSIS● Before performing diagnosis, always read GI section to confirm general precautions.● If ABS actuator and electric unit (control unit), steering angle sensor, steering system parts, suspension

system parts, or tyres have been replaced, or if alignment has been adjusted, be sure to adjust neutralposition of steering angle sensor before driving. Refer to BRC-46, "Adjustment of Steering Angle SensorNeutral Position" .

● Calibrate yaw rate/side/decel G sensor before driving when removing/installing ABS actuator and electricunit (control unit) or yaw rate/side/decel G sensor. Refer to BRC-47, "Calibration of Decel G Sensor" .

● After diagnosis is finished, be sure to erase memory. Refer to BRC-65, "ERASE MEMORY" .● When checking continuity and voltage between units, be sure to check for disconnection, looseness,

bend, or collapse of connector terminals. If any malfunction is found, repair or replace connector termi-nals.

● For intermittent symptoms, possible cause is malfunction in harness, harness connector, or terminals.Move harness, harness connector, and terminals to check for poor connections.

● If a circuit tester is used for the check, be careful not to forcibly extend any connector terminal.● ESP/TCS/ABS system electrically controls brake operation and engine output. Following symptoms may

be caused by normal operations:

Symptom Symptom description Result

Motor operation noise

This is noise of motor inside ABS actuator and electric unit (control unit).Slight noise may occur during ESP, TCS, and ABS operation.

NormalJust after engine starts, motor operating noise may be heard. This is anormal status of the system operation check.

System operation checknoise

When engine starts, slight “click” noise may be heard from engine com-partment. This is normal and is part of system operation check.

Normal

ESP/TCS operation(SLIP indicator lamp on)

TCS may activate momentarily if wheel speed changes when drivingover location where friction coefficient varies, when downshifting, orwhen fully depressing accelerator pedal.

NormalCancel the ESP/TCSfunction for theinspection on a chas-sis dynamometer.

When checking speed meter etc., with a 2-wheel-drive chassis dyna-mometer, vehicle speed is not increased by pressing down on theaccelerator.

ABS operation (Longer stop-ping distance)

When driving on roads with a low coefficient of friction, such as snowyroads or gravel roads, the stopping distance is sometimes longer forvehicles equipped with ABS. Therefore, when driving on such roads,drive at a sufficiently reduced speed to be safe.

Normal

Insufficient feeling of accel-eration

Depending on road conditions, driver may feel that feeling of accelera-tion is insufficient. This is because traction control, which controlsengine and brakes to achieve optimal traction, has the highest priority(for safety). As a result, there may be times when acceleration is slightlyless than usual for the same accelerator pedal operation.

Normal

BRC-74


Basic Inspection BFS0002X

BASIC INSPECTION 1 BRAKE FLUID LEVEL, LEAKS, AND BRAKE PADS1. Check fluid level in the brake reservoir tank. If fluid level is low, refill the brake fluid.2. Check the brake tube and around the ABS actuator and electric unit (control unit) for leaks. If leakage or

seepage is found, check the following items.● If ABS actuator and electric unit (control unit) connection is loose, tighten the brake tube to the specified

torque and make sure there are no leaks.● If there is damage to the connection flare nut or ABS actuator and electric unit (control unit) screw,

replace the damaged part and re-conduct the leak inspection to make sure there are no leaks.● If there is leakage or seepage at any location other than ABS actuator and electric unit (control unit)

connection, wipe away leakage or seepage with clean cloth. Then inspect again and confirm the thereis on leakage.

● If there is leakage from ABS actuator and electric unit (control unit), wipe away leakage or seepage withclean cloth. Then inspect again. If there is leakage or seepage, replace ABS actuator and electric unit(control unit).CAUTION:ABS actuator and electric unit (control unit) body cannot be disassembled.

3. Check brake pad degree of wear. Refer to BR-25, "PAD WEAR INSPECTION" in “Front Disc Brake” andBR-31, "PAD WEAR INSPECTION" in “Rear Disc Brake”.

BASIC INSPECTION 2 POWER SYSTEM TERMINAL LOOSENESS AND BATTERY INSPECTIONMake sure the battery positive cable, negative cable and ground connection are not loose. In addition, checkthe battery voltage to make sure it has not dropped and the altimeter is normal.

BASIC INSPECTION 3 ABS WARNING LAMP, BRAKE WARNING LAMP, ESP OFF INDICATORLAMP AND SLIP INDICATOR LAMP INSPECTIONNOTE:Make sure that brake fluid level switch, ESP OFF switch and parking brake switch are normal before inspec-tion. Refer to BRC-90, "Inspection 11 Brake Fluid Level Switch Circuit" , BRC-91, "Inspection 13 ESP OFFSwitch Circuit" , BRC-93, "Inspection 14 Parking Brake Switch Circuit" . Check each warning lamp and indica-tor lamp for lighting and light out. Perform inspection for each warning lamp and indicator lamp when they arenot adaptable to the conditions listed below. Refer to BRC-74, "ON and OFF Timing for ABS Warning Lamp,ESP OFF Indicator Lamp, SLIP Indicator Lamp, Brake Warning Lamp" , BRC-94, "Inspection 15 Warning lampand indicator lamp system" .

ON and OFF Timing for ABS Warning Lamp, ESP OFF Indicator Lamp, SLIP Indicator Lamp,Brake Warning Lamp

×: ON –: OFF

ConditionABS warning

lampESP OFF indi-

cator lampSLIP indicator

lampBrake warninglamp [Note 1]

Remarks

Ignition SW OFF – – – — —

Approx. 2 seconds after igni-tion switch is turned ON

× × × × [Note 2] —

Approx. 2 seconds later afterignition switch ON

– – – × [Note 2]Go out 2 seconds afterignition switch is turnedON.

ESP OFF SW is turned ON(ESP/TCS function is OFF.)

– × – — —

ESP/TCS/ABS error × × × —

There is an ABS actua-tor and electric unit(control unit) error.(Power, ground or sys-tem malfunction)

When ESP/TCS is not func-tioning normally

– × × — —

EBD error × × × × —

TROUBLE DIAGNOSIS

BRC-75

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

NOTE:1. Brake warning lamp will turn on in case of operating parking brake (switch turned on) or of actuating brake

fluid level switch (brake fluid is insufficient).2. After starting engine, turn OFF.

Inspection 1 Wheel Sensor Circuit BFS0002Y

Check each part according to CONSULT-II self-diagnostic results, and then identify the parts to be replaced.CAUTION:Check each part between wheel sensor terminals.





2. CHECK TYRE

Check air pressure, wear and size.Are air pressure, wear and size within standard values?YES >> GO TO 3.NO >> Adjust air pressure, or replace tyre.

3. CHECK SENSOR AND SENSOR ROTOR

● Check sensor rotor for damage. Refer to BRC-100, "SENSOR ROTOR" .● Check wheel sensor for damage, disconnection or looseness. Refer to BRC-98, "WHEEL SENSORS" .OK or NGOK >> GO TO 4.NG >> Repair or replace the malfunctioning component.

4. CHECK CONNECTOR

1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E62 andthe malfunctioning wheel sensor connector E66 (FR - LH), E77 (FR - RH) or C3 (RR - LH, RH). Check ter-minal to see if it is deformed, disconnected, loose, etc., and repair or replace it if any malfunction conditionis found.

2. Reconnect connectors and check that interference with other parts has not cut wheel sensor cables, driveat 30 km/h (19 MPH) or more for approximately 1 minute, and conduct self-diagnosis.

OK or NGOK >> Connector terminal contact is loose, damaged, open or shorted.NG >> GO TO 5.


FR RH SENSOR-1,-2

FR LH SENSOR- 1,-2

RR RH SENSOR-1,-2

RR LH SENSOR-1,- 2

ABS SENSOR [MALFUNCTION SIGNAL]

BRC-76


5. CHECK WHEEL SENSOR HARNESS

1. Turn ignition switch OFF and disconnect the wheel sensor con-nector E66 (FR - LH), E77 (FR - RH) or C3(RR - LH, RH) andABS actuator and electric unit (control unit) connector E62.

2. Check continuity between terminals. (Also check continuitywhen steering wheel is turned right and left and when sensorharness inside the wheel house is moved.)

OK or NGOK >> GO TO 6.NG >> Repair or replace harness and connector that have malfunction.

6. CHECK WHEEL SENSOR

1. Replace wheel sensor that resulted in malfunction by self-diagnosis.2. Reconnect connectors, drive vehicle at 30 km/h (19 MPH) or more for approximately 1 minute, and then

perform self-diagnosis.Is above displayed on self-diagnosis display?OK >> Wheel sensor has malfunction.NG >> ● Replace ABS actuator and electric unit (control unit).

● Perform to self-diagnosis again, and make sure that the result shows “NO DTC IS DETECTED.FURTHER TESTING MAY BE REQUIRED.”

SFIA3012E

Power supply circuit Signal circuit Ground circuit

WheelABS C/U

(E62)Wheel sensor

ABS C/U(E62)

Wheel sensorABS C/U(Signal)

Ground

Front RH 34 1 33 2 34, 33

—Front LH 45 1 46 2 45, 46

Rear RH 43 1 42 2 43, 42

Rear LH 36 3 37 4 36, 37

Power supply circuit : Continuity should exist.Signal circuit : Continuity should exits.Ground circuit : Continuity should not exist.

TROUBLE DIAGNOSIS

BRC-77

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Inspection 2 Engine System BFS0002Z





2. CHECK ENGINE SYSTEM

1. Perform an ECM self-diagnosis and repair or replace any malfunction items. Perform the ECM self-diag-nosis again.

2. Perform ABS actuator and electric unit (control unit) self-diagnosis again.OK or NGOK >> INSPECTION ENDNG >> Repair or replace any malfunction items. Perform self-diagnosis again.

Inspection 3 ABS actuator and electric unit (control unit) BFS00030




Is above displayed in self-diagnosis display items?YES >> Replace ABS actuator and electric unit (control unit). Perform self-diagnosis.NO >> INSPECTION END

Inspection 4 Pressure Sensor Circuit BFS00031

FRONT PRESSURE SENSOR INSPECTION PROCEDURE





ENGINE SIGNAL 1

ENGINE SIGNAL 2

ENGINE SIGNAL 3

ENGINE SIGNAL 4

ENGINE SIGNAL 6


CONTROLLER FAILURE


PRESS SEN CIRCUIT

BRC-78


2. CHECK CONNECTOR

1. Turn ignition switch OFF and disconnect front pressure sensor connector E64 and ABS actuator and elec-tric unit (control unit) connector E24, check terminals for deformation, disconnection, looseness, and soon. If there is an error, repair or replace terminal.


3. CHECK FRONT PRESSURE SENSOR HARNESS

1. Turn ignition switch OFF and disconnect front pressure sensorconnector E64 and ABS actuator and electric unit (control unit)connector E62.

2. Check continuity between ABS actuator and electric unit (controlunit) connector and front pressure sensor connector.

OK or NGOK >> GO TO 4.NG >> If the open or short in harness, repair or replace harness.

4. CHECK FRONT PRESSURE SENSOR

1. Connect front pressure sensor connector E64 and ABS actuator and electric unit (control unit) connectorsE62.

2. Use “DATA MONITOR” to check the front pressure sensor value.

OK or NGOK >> Replace ABS actuator and electric unit (control unit) and perform self-diagnosis again.NG >> Front pressure sensor is damaged or malfunctioning, replace front pressure sensor.

SFIA3024E


Front pressure sensor(harness connector E64)

Continuity

19 1

Yes20 2

18 3

Condition Data monitor display

When brake pedal is depressed Positive value

When brake pedal is released Approx. 0 bar

TROUBLE DIAGNOSIS

BRC-79

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

REAR PRESSURE SENSOR INSPECTION PROCEDURE




2. CHECK CONNECTOR

1. Turn ignition switch OFF and disconnect rear pressure sensor connector E67 and ABS actuator and elec-tric unit (control unit) connector E24, check terminals for deformation, disconnection, looseness, and soon. If there is an error, repair or replace terminal.


3. CHECK REAR PRESSURE SENSOR HARNESS

1. Turn ignition switch OFF and disconnect rear pressure sensorconnector E67 and ABS actuator and electric unit (control unit)connector E24.

2. Check continuity between ABS actuator and electric unit (controlunit) connector and rear pressure sensor connector.



PRESS SEN CIRCUIT

SFIA3025E


Rear pressure sensor(harness connector E67)

Continuity

21 1

Yes22 2

23 3

BRC-80


4. CHECK REAR PRESSURE SENSOR

1. Connect rear pressure sensor connector E67 and ABS actuator and electric unit (control unit) connectorsE62.

2. Use “DATA MONITOR” to check the rear pressure sensor value.

OK or NGOK >> Replace ABS actuator and electric unit (control unit) and perform self-diagnosis again.NG >> Rear pressure sensor is damaged or malfunctioning, replace rear pressure sensor.

Inspection 5 Steering Angle Sensor Circuit BFS00032


1. CHECK SELF- DIAGNOSTIC RESULTS


Is above displayed in self-diagnosis item?YES >> GO TO 2.NO >> INSPECTION END

2. CHECK CONNECTOR

1. Turn ignition switch OFF and disconnect steering angle sensor connector M20 and ABS actuator andelectric unit (control unit) connector E62 and check terminals for deformation, disconnection, looseness,and so on. If there is an error, repair or replace terminal.


Condition Data monitor display

When brake pedal is depressed Positive value

When brake pedal is released Approx. 0 bar


ST ANGLE SEN CIRCUIT

TROUBLE DIAGNOSIS

BRC-81

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

3. CHECK STEERING ANGLE SENSOR HARNESS

1. Check CAN communication system. Refer to BRC-91, "Inspection 12 CAN Communication Circuit" .2. Turn ignition switch ON, OFF and disconnect steering angle sensor connector M20.3. Check voltage between steering angle sensor harness connec-

tor M20 and ground.

4. Turn ignition switch OFF. Check continuity between steeringangle sensor harness connector M33 and ground.


SFIA3026E

Steering angle sensor(harness connector M20)

Ground Measurement condition Measured value

2—

Ignition switch ONBattery voltage(Approx. 12 V)


8 Ignition switch OFFBattery voltage(Approx. 12 V)

SFIA3027E

Steering angle sensor(harness connector M33)

Ground Continuity

1 — Yes

BRC-82


4. CHECK DATA MONITOR

1. Connect steering angle sensor and ABS actuator and electric unit (control unit) connectors.2. Perform “DATA MONITOR” of the “STEERING ANGLE SIGNAL” to check if the status is normal.

OK or NGOK >> Perform ABS actuator and electric unit (control unit) self-diagnosis again.NG >> Replace spiral cable (steering angle sensor) and adjust neutral position of steering angle sensor.

Refer to BRC-46, "Adjustment of Steering Angle Sensor Neutral Position" .

Inspection 6 Yaw Rate/Side/Decel G sensor Circuit BFS00033

CAUTION:● Sudden turns (such as spin turns, acceleration turns), drifting, etc. May cause yaw rate/side/decel

G sensor circuit indicate a malfunction. However this is not a malfunction if normal operation canbe resumed after restarting engine.

● When on a turntable, such as at a parking structure entrance, or when on a moving object withengine running, the ESP OFF indicator lamp might turn on and self-diagnosis using the CONSULT-II yaw rate sensor system malfunction might be displayed, but in this case there is no malfunctionwith yaw rate/side/decel G sensor circuit. As soon as the vehicle leaves the turntable or movingobject, restart engine to return the system to normal. And after doing spin turns or accelerationturns with ESP “OFF” (ESP OFF switch ON), too, the results will return to a normal state by restart-ing vehicle.





2. CHECK CONNECTOR

1. Turn ignition switch OFF and disconnect yaw rate/side/decel G sensor connector B13 and ABS actuatorand electric unit (control unit) connector E62 and check terminals for deformation, disconnection, loose-ness, and so on. If there is an error, repair or replace terminal.


Steering condition Data monitor

Straight-ahead –5 ° to +5°

Turn wheel to the right by 90 ° Approx. - 90 °

Turn wheel to the left by 90 ° Approx.+ 90 °


YAW RATE SENSOR

SIDE G-SEN CIRCUIT

G-SENSOR

TROUBLE DIAGNOSIS

BRC-83

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

3. CHECK YAW RATE/SIDE/DECEL G SENSOR HARNESS

1. Turn ignition switch OFF and disconnect yaw rate/side/decel Gsensor connector B13 and ABS actuator and electric unit (con-trol unit) connector E62.

2. Check continuity between ABS actuator and electric unit (controlunit) connector and yaw rate/side/decel G sensor connector.

OK or NGOK >> GO TO 4.NG >> If open or short in harness, repair or replace harness.

4. CHECK YAW RATE/SIDE/DECEL G SENSOR

1. Connect yaw rate/side/decel G sensor B13 and ABS actuator and electric unit (control unit) connectorE62.

2. Use “DATA MONITOR” to check if yaw rate/side/decel G sensor are normal.

OK or NGOK >> Perform ABS actuator and electric unit (control unit) self diagnosis again.NG >> Replace yaw rate/side/decel G sensor and calibration of decel G sensor. Refer to BRC-47, "Cali-

bration of Decel G Sensor" .

SFIA2875E


Yaw rate/side/decel G sensor(harness connector B13)

Continuity

6 3

Yes24 5

25 1

29 2

Vehicle statusYaw rate sensor

(Data monitor standard)Side G sensor

(Data monitor standard)Decel G sensor

(Data monitor standard)

When stopped –4 to +4 d/s –1.1 to +1.1 m/s 2 –0.11 to +0.11 G

Right turn Negative value Negative value —

Left turn Positive value Positive value —

Speed up — — Negative value

Speed down — — Positive value

BRC-84


Inspection 7 Solenoid, ESP Change-Over Valve and Actuator Relay Circuit BFS00034





2. CHECK CONNECTOR

1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E62 checkterminals for deformation, disconnection, looseness, and so on. If there is an error, repair or replace termi-nal.



FR LH IN SOL

FR LH OUT SOL

RR RH IN SOL

RR RH OUT SOL

FR RH IN SOL

FR RH OUT SOL

RR LH IN SOL

RR LH OUT SOL

CV 1

CV 2

SV 1

SV 2

ACTUATOR RLY

TROUBLE DIAGNOSIS

BRC-85

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

3. CHECK SOLENOID, ESP CHANGE-OVER VALVE AND ACTUATOR RELAY POWER SUPPLY CIR-CUIT


unit) harness connector E62 and ground.


4. CHECK SOLENOID, ESP CHANGE-OVER VALVE AND ACTUATOR RELAY GROUND CIRCUIT

Check continuity between ABS actuator and electric unit (controlunit) harness connector E62 and ground.

OK or NGOK >> Perform self-diagnosis again. If the same results appear, replace ABS actuator and electric unit

(control unit). Refer to BRC-101, "ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)" .NG >> Repair harness or connector.

SFIA2877E



32 — Battery voltage (Approx.12 V)

SFIA2878E


Ground Continuity

16, 47 — Yes

BRC-86


Inspection 8 ABS Motor, Motor Relay, and Circuit BFS00035


1. CHECK SELF-DIAGNOSTIC RESULTS (1)



2. CHECK SELF-DIAGNOSTIC RESULTS (2)

1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E62. Thenreconnect it securely.

2. Connect the connector securely and perform self-diagnosis again.Do any self-diagnosis items appear?YES >> GO TO 3.NO >> Repair or replace the applicable connector.

3. CHECK ABS MOTOR AND MOTOR RELAY POWER SUPPLY CIRCUIT


unit) connector E62 and ground.



PUMP MOTOR

SFIA2879E



1 — Battery voltage (Approx.12 V)

TROUBLE DIAGNOSIS

BRC-87

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

4. CHECK ABS MOTOR AND MOTOR RELAY GROUND CIRCUIT


OK or NGOK >> Perform self-diagnosis again. If the same result appears, replace ABS actuator and electric unit

(control unit). Refer to BRC-101, "ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)" .NG >> Repair harness or connectors.

Inspection 9 ABS Actuator and Electric Unit (Control Unit) Power Supply andGround Circuit BFS00036





2. CHECK CONNECTOR

1. Disconnect ABS actuator and electric unit (control unit) connector E62 check terminals for deformation,disconnection, looseness, and so on. If there is an error, repair or replace terminal.


SFIA2878E


Ground Continuity

16, 47 — Yes


BATTERY VOLTAGE [MALFUNCTION]

BRC-88


3. CHECK ABS ACTUATOR AND ELECTRIC UNIT (CONTROL UNIT) POWER SUPPLY CIRCUIT

1. Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector E62.2. Turn ignition switch ON or OFF and check voltage between ABS

actuator and electric unit (control unit) harness connector E62and ground.

OK or NGOK >> GO TO 4.NG >> Repair harness or connector.



OK or NGOK >> Perform ABS actuator and electric unit (control unit) self-diagnosis again.NG >> Repair harness or connectors.

SFIA2881E


Ground Measurement conditionMeasured

value

4 —Ignition switch ON

Battery voltage(Approx. 12 V)


SFIA2878E


Ground Continuity

16, 47 — Yes

TROUBLE DIAGNOSIS

BRC-89

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Inspection 10 Stop Lamp Switch Circuit BFS00037





2. CHECK CONNECTOR

1. Turn ignition switch OFF and disconnect the stop lamp switch connector (A/T: E109, M/T: E116) and ABSactuator and electric unit (control unit) connector E62 and check terminals for deformation, disconnection,looseness, and so on. If any malfunction is found, repair or replace terminal.

2. Securely reconnect connectors.3. Start engine.4. Repeat pumping brake pedal carefully several times, then perform self-diagnosis again.OK or NGOK >> Connector terminal contact is loose, damaged, open or shorted.NG >> GO TO 3.

3. CHECK STOP LAMP SWITCH CIRCUIT

1. Turn ignition switch OFF and disconnect stop lamp switch con-nector (A/T: E109, M/T: E116) and ABS actuator and electric unit(control unit) connector E62.

2. Check continuity between stop lamp switch harness connector(A/T: E109, M/T: E116) and ABS actuator and electric unit (con-trol unit) harness connector E62.

OK or NGOK >> Connect connectors and perform an ABS actuator and electric unit (control unit) self-diagnosis.NG >> If the open or short in harness. Repair or replace harness.


STOP LAMP SW

SFIA3054E


Stop lamp switch(harness connector)

Continuity

41 2 Yes

BRC-90


Inspection 11 Brake Fluid Level Switch Circuit BFS00038



1. Check the brake reservoir tank fluid level. If the level is low, add brake fluid.2. Erase self-diagnostic results and check self-diagnostic results.


2. CHECK CONNECTOR

1. Turn ignition switch OFF and disconnect the brake fluid level switch connector E65 and ABS actuator andelectric unit (control unit) connector E62 and check terminal for deformation, disconnection, looseness,and so on. If there is any malfunction condition, repair or replace terminal.


3. HARNESS CHECK

1. Turn ignition switch OFF and disconnect the brake fluid levelswitch connector E65, ABS actuator and electric unit (controlunit) connectors E62.

2. Check continuity between brake fluid level switch connector E65and ABS actuator and electric unit (control unit) connector E62and ground.

OK or NGOK >> Connect connectors and perform an ABS actuator and electric unit (control unit) self-diagnosis.NG >> If the open or short in harness, repair or replace harness.


BR FLUID LEVEL LOW

SFIA2885E


Brake fluid level switch(harness connector E65)

Continuity

8 1 Yes

8 Ground No

Ground 2 Yes

TROUBLE DIAGNOSIS

BRC-91

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Inspection 12 CAN Communication Circuit BFS00039


1. CHECK CONNECTOR

1. Turn ignition switch OFF, disconnect the ABS actuator and electric unit (control unit) connector, and checkthe terminal for deformation, disconnection, looseness, and so on. If there is a malfunction, repair orreplace the terminal.

2. Reconnect connector to perform self-diagnosis.Is “CAN COMM CIRCUIT” or “ST ANG SEN COM CIR” displayed in the self-diagnosis display items?YES >> Print out the self-diagnostic results, and refer to LAN-4, "Precautions When Using CONSULT-II" .NO >> Connector terminal connection is loose, damaged, open, or shorted.

Inspection 13 ESP OFF Switch Circuit BFS0003A


1. CHECK ESP OFF SWITCH

1. Turn ignition switch OFF and disconnect ESP OFF switch con-nector M53.

2. Check continuity between ESP OFF switch connector M53.

OK or NGOK >> GO TO 2.NG >> Replace ESP OFF switch.

SFIA2933E

ESP OFF switch Measurement condition Continuity

1, 2ESP OFF switch ON Yes

ESP OFF switch OFF No

BRC-92


2. CHECK HARNESS

1. Disconnect ABS actuator and electric unit (control unit) connec-tor E62.

2. Check continuity between ESP OFF switch connector M53 andABS actuator and electric unit (control unit) connector E62 andground.


SFIA3028E


ESP OFF switch(harness connector M53)

Continuity

38 1 Yes

38 Ground No

Ground 2 Yes

TROUBLE DIAGNOSIS

BRC-93

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Inspection 14 Parking Brake Switch Circuit BFS0003B


1. CHECK PARKING BRAKE SWITCH

1. Turn ignition switch OFF and disconnect parking brake switchconnector (LHD model: B12, RHD model: B109).

2. Check continuity between parking brake switch connector (LHDmodel: B12, RHD model: B109) and ground.

OK or NGOK >> GO TO 2.NG >> Replace parking brake switch.

2. HARNESS CHECK

1. Disconnect combination meter connector M23.2. Check continuity between parking brake switch connector (LHD

model: B12, RHD model: B109) and combination meter connec-tor M23 and ground.


SFIA2935E

Measurement condition Continuity

When the parking brake lever is operated. Yes

When the parking brake lever is not operated. No

SFIA3055E

Parking brake switch(harness connector B12, B109)


Continuity

1 31 Yes

1 Ground No

BRC-94


Inspection 15 Warning lamp and indicator lamp system BFS0003C



Perform self-diagnosis of ABS actuator and electric unit (control unit). Refer to BRC-65, "Self-Diagnosis" .OK or NGOK >> GO TO 2.NG >> Check items displayed by self-diagnosis. Refer to BRC-66, "DISPLAY ITEM LIST" .

2. CHECK COMBINATION METER

Check if the indication and operation of combination meter are normal. Refer to DI-13, "Self-Diagnosis Modeof Combination Meter" .OK or NGOK >> INSPECTION ENDNG >> Repair or replace combination meter. Refer to DI-29, "Removal and Installation of Combination

Meter" .

Inspection 16 Steering Angle Sensor Safe Mode BFS0003D


1. CHECK INDICATOR LAMP

Check that ESP OFF indicator lamp is on.OK or NGOK >> GO TO 2.NG >> GO TO 3.

2. ADJUSTMENT OF STEERING ANGLE SENSOR NEUTRAL POSITION

Adjust steering angle sensor neutral position. Refer to BRC-46, "Adjustment of Steering Angle Sensor NeutralPosition" .OK or NGOK >> GO TO 3.NG >> Check steering angle sensor. Refer to BRC-80, "Inspection 5 Steering Angle Sensor Circuit" .

3. CHECK INDICATOR LAMP

Check that ESP OFF indicator lamp is off.OK or NGOK >> GO TO 4.NG >> Perform basic inspection. Refer to BRC-74, "BASIC INSPECTION 3 ABS WARNING LAMP,

BRAKE WARNING LAMP, ESP OFF INDICATOR LAMP AND SLIP INDICATOR LAMP INSPEC-TION" .


Perform ABS actuator and electric unit (control unit) self-diagnosis.

NOTE:When self-diagnostic results show items other than those above, perform repair or replacement for the itemindicated and repeat self-diagnosis.Is the above displayed on self-diagnosis display?YES >> Erase error memory. Refer to BRC-65, "ERASE MEMORY" .NO >> INSPECTION END


ST ANGL SEN SAFE

TROUBLE DIAGNOSIS

BRC-95

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

Symptom 1 Excessive ABS Function Operation Frequency BFS0003E

1. CHECK START

Check longitudinal brake force distribution using a brake tester. Refer to BR-37, "SERVICE DATA AND SPEC-IFICATIONS (SDS)" .OK or NGOK >> GO TO 2.NG >> Check the following system. If any malfunction is found, repair or replace malfunctioning parts.


2. CHECK FRONT AND REAR AXLE

Make sure that there is no excessive play in the front and rear axles. Refer to front: FAX-5, "WHEEL BEAR-ING INSPECTION" , Rear: RAX-5, "WHEEL BEARING INSPECTION" .OK or NGOK >> GO TO 3.NG >> Repair.

3. CHECK WHEEL SENSOR AND SENSOR ROTOR

Check wheel sensor and sensor rotor for the following.● Wheel sensor installation for damage.● Sensor rotor installation for damage.● Wheel sensor connector connection.● Wheel sensor harness inspection.OK or NGOK >> GO TO 4.NG >> ● Replace wheel sensor or sensor rotor.

● Repair harness.


Make sure that the ABS warning lamp is turned off after the ignition switch is turned ON or when driving.OK or NGOK >> NormalNG >> Perform self-diagnosis. Refer to BRC-65, "Self-Diagnosis" .

Symptom 2 Unexpected Pedal Reaction BFS0003F

1. CHECK BRAKE PEDAL STROKE

Check brake pedal stroke. Refer to BR-6, "Inspection and Adjustment" .Is the stroke too big?YES >> ● Bleed air from brake tube and hose. Refer to BR-11, "Bleeding Brake System" .

● Check brake pedal, brake booster, and master cylinder for mount play, looseness, brake sys-tem fluid leakage, etc. Refer to brake pedal: BR-8, "COMPONENTS" , brake booster and mas-ter cylinder: BR-20, "COMPONENTS" .

NO >> GO TO 2.

BRC-96


2. CHECK FUNCTION

Disconnect ABS actuator and electric unit (control unit) connector to deactivate ABS. Check if braking force isnormal in this condition. Connect connector after inspection.OK or NGOK >> GO TO procedure 3 “CHECK WHEEL SENSOR AND SENSOR ROTOR” of symptom 1. Refer to

BRC-95, "Symptom 1 Excessive ABS Function Operation Frequency" .NG >> Check the following system. If any malfunction is found, repair or replace malfunctioning parts.


Symptom 3 The Braking Distance Is Long BFS0003G

CAUTION:The stopping distance on slippery road surfaces might be longer with the ABS operating than whenthe ABS is not operating.

1. CHECK FUNCTION

Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector to deactivateABS. In this condition, check stopping distance. After inspection, connect connector.OK or NGYES >> GO TO procedure 3 “CHECK WHEEL SENSOR AND SENSOR ROTOR” of symptom 1. Refer to

BRC-95, "Symptom 1 Excessive ABS Function Operation Frequency" .NO >> ● Bleed air from the brake piping. Refer to BR-11, "Bleeding Brake System" .

● Check the following system. If any malfunction is found, repair or replace malfunctioning parts.– Brake booster. Refer to BR-19, "BRAKE BOOSTER" .– Hydraulic line. Refer to BR-12, "BRAKE TUBE AND HOSE" .– Front brake caliper. Refer to BR-25, "FRONT DISC BRAKE" .– Rear brake caliper. Refer to BR-31, "REAR DISC BRAKE" .

Symptom 4 ABS Function Dose Not Operate BFS0003H

CAUTION:ABS dose not operate when speed is 10km/h (6 MPH) or lower.


Make sure that the ABS warning lamp turns OFF after ignition switch is turned on or when driving.OK or NGOK >> GO TO procedure 3 “CHECK WHEEL SENSOR AND SENSOR ROTOR” of symptom 1. Refer to

BRC-95, "Symptom 1 Excessive ABS Function Operation Frequency" .NG >> Perform self-diagnosis. Refer to BRC-65, "Self-Diagnosis" .

Symptom 5 Pedal Vibration or ABS Operation Sound Occurs BFS0003I

CAUTION:Under the following conditions, ABS is activated and vibration is felt when brake pedal is lightlydepressed (just place a foot on it). However, this is normal.● When shifting gears● When driving on slippery road● During cornering at high speed● When passing over bumps or grooves [at approximately 50 mm (1.97 in) or more]● When pulling away just after starting engine [at approximately 10 km/h (6 MPH) or higher]

TROUBLE DIAGNOSIS

BRC-97

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

1. CHECK SYMPTOM 1

Check if there is pedal vibration or operation noise when the engine is started.Do symptoms occur?OK >> GO TO 2.NG >> Perform self-diagnosis. Refer to BRC-65, "Self-Diagnosis" .

2. CHECK SYMPTOM 2

Check symptoms when electrical component (headlamps, etc.) switches are operated.Do symptoms occur?YES >> Check if there is a radio, antenna, antenna lead wire, or wiring close to the control unit. If there is,

move it farther away.NO >> GO TO procedure 3 “CHECK WHEEL SENSOR AND SENSOR ROTOR” of symptom 1. Refer to

BRC-95, "Symptom 1 Excessive ABS Function Operation Frequency" .

Symptom 6 Vehicle Jerks During ESP/TCS/ABS Control BFS0003J

1. CHECK SYMPTOM

Check if the vehicle jerks during ESP/TCS/ABS control.OK or NGOK >> NormalNG >> GO TO 2.


Perform self-diagnostic of ABS actuator and electric unit (control unit).Are self-diagnostic results indicated?YES >> Check corresponding items, make repairs, and perform ABS actuator and electric unit (control

unit) self-diagnosis.NO >> GO TO 3.

3. CHECK CONNECTOR

● Turn ignition switch OFF and disconnect ABS actuator and electric unit (control unit) connector and checkterminal for deformation, disconnection, looseness, and so on.

● Securely connect connectors. Perform ABS actuator and electric unit (control unit) self-diagnosis.Are self-diagnostic results indicated?YES >> If poor contact, damage, open or short circuit of connector terminal is found, repair or replace.NO >> GO TO 4.

4. CHECK ECM AND TCM SELF-DIAGNOSTIC RESULTS

Perform ECM and TCM self-diagnosis.Are self-diagnostic results indicated?YES >> Check corresponding items.

● ECM: Refer to EC-998, "TROUBLE DIAGNOSIS" (YD25DDTi model), EC-77, "TROUBLEDIAGNOSIS" (VQ40DE model).

● TCM: Refer to AT-34, "TROUBLE DIAGNOSIS" .NO >> Replace ABS actuator and electric unit (control unit).

BRC-98

[ESP/TCS/ABS]WHEEL SENSORS

WHEEL SENSORS PFP:47910

Removal and Installation BFS0003K

REMOVALPay attention to the following when removing wheel sensor.CAUTION:● As much as possible, avoid rotating wheel sensor when removing it. Pull wheel sensors out with-

out pulling on sensor harness.

1. Front wheel sensor (LH) 2. Front wheel sensor connector (LH) 3. Rear wheel sensor (LH)

4. Rear wheel sensor (RH) 5. Clip 6. Rear wheel sensor connector

A. Front B. Rear :Front

SFIA3014E

WHEEL SENSORS

BRC-99

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

● Take care to avoid damaging wheel sensor edges or rotor teeth. Remove wheel sensor first beforeremoving front or rear wheel hub. This is to avoid damage to wheel sensor wiring and loss of sen-sor function.

INSTALLATIONPay attention to the following when installing wheel sensor. Tighten installation bolts and nuts to the specifiedtorques.● When installing, make sure there is no foreign material such as iron chips on and in the mounting hole of

the wheel sensor. Make sure no foreign material has been caught in the sensor rotor. Remove any foreignmaterial and clean the mount.

● When installing wheel sensor, be sure to press rubber grommets in until they lock at locations shownabove in figure. When installed, harness must not be twisted.

BRC-100

[ESP/TCS/ABS]SENSOR ROTOR

SENSOR ROTOR PFP:47970

Removal and Installation BFS0003L

FRONTThe sensor rotors are built into the wheel hubs and are not removable. If damaged, replace wheel hub andbearing assembly. Refer to FAX-5, "Removal and Installation" .

REARRemoval● Follow procedure below to remove rear sensor rotor.

Remove side flange. Refer to RFD-14, "SIDE OIL SEAL" .Using a bearing replacer (commercial service tool) and puller (commercial service tool), remove sensorrotor from companion flange.

Installation● Follow procedure below to install rear sensor rotor.

Using a drift (SST), press rear sensor rotor onto rotor onto sideflange.Install side flange. Refer to RFD-14, "SIDE OIL SEAL" .

BRG1210D

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)

BRC-101

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

ACTUATOR AND ELECTRIC UNIT (ASSEMBLY) PFP:47660

Removal and Installation BFS0003M

The above figure shows LHD model. RHD model figure is the mirror image.

CAUTION:● Before servicing, disconnect battery cables.● To remove brake tube, use flare nut wrench to prevent flare nuts and brake tube from being dam-

aged. To install, use flare nut torque wrench.● Do not apply excessive impact to ABS actuator and electric unit (control unit), such as dropping it.● Do not remove and install actuator by holding harness.● After work is completed, bleed air from brake tube and hose. Refer to BR-11, " Bleeding Brake Sys-

tem" .

REMOVAL1. Disconnect ABS actuator and electric unit (control unit) connector.2. Loosen brake tube flare nuts, then remove brake tubes from ABS actuator and electric unit (control unit).3. Remove ABS actuator and electric unit (control unit) bracket mounting bolts.4. Remove ABS actuator and electric unit (control unit) from vehicle.

1. To rear left 2. From master cylinder secondaryside

3. To rear right

4. To front left 5. From master cylinder primary side 6. To front right

7. ABS actuator and electric unit (con-trol unit)

8. Harness connector : Front

Refer to GI section for symbol marks in the figure.

SFIA3043E

BRC-102

[ESP/TCS/ABS]ACTUATOR AND ELECTRIC UNIT (ASSEMBLY)

INSTALLATIONInstallation is the reverse order of removal.NOTE:● After installing harness connector in the ABS actuator and electric unit (control unit), make sure connector

is securely locked.● After performing above works, calibrate decel G sensor. Refer to BRC-47, "Calibration of Decel G Sensor"

.● In the case that ABS actuator and electric unit (control unit) are replaced, make sure to adjust position of

steering angle sensor. Refer to BRC-46, "Adjustment of Steering Angle Sensor Neutral Position" .

G-SENSOR

BRC-103

[ESP/TCS/ABS]

C

D

E

G

H

I

J

K

L

M

A

B

BRC

G-SENSOR PFP:47930

Removal and Installation BFS0003N

CAUTION:● Do not drop or strike the yaw rate/side/decel G sensor, because it is sensitive to impact.● Do not use power tool, etc. Because yaw rate/side/decel G sensor is weak for the impact.

REMOVAL1. Remove center console. Refer to IP-16, "CENTER CONSOLE" .2. Disconnect harness connector.3. Remove yaw rate/side/decel G sensor mounting bolts. Remove

yaw rate/side/decel G sensor.

INSTALLATION● Installation is the reverse order of removal.● Attach the yaw rate/side/decel G sensor to the vehicle and tighten the bolts to the specified torque.

NOTE:● After performing above work, calibrate decel G sensor. Refer to BRC-47, "Calibration of Decel G Sensor" .

SFIA3029E

: 8.0 N·m (0.82 kg-m, 71 in-lb)

BRC-104

[ESP/TCS/ABS]STEERING ANGLE SENSOR

STEERING ANGLE SENSOR PFP:25554

Removal and Installation BFS0003O

REMOVAL1. Remove spiral cable assembly. Refer to SRS-41, "SPIRAL CABLE" .2. Remove steering angle sensor from spiral cable assembly.

INSTALLATIONInstallation is the reverse order of removal.NOTE:In the case that ABS actuator and electric unit (control unit) are replaced, make sure to adjust neutral positionof steering angle sensor. Refer to BRC-46, "Adjustment of Steering Angle Sensor Neutral Position" .

SFIA1404E

BRAKE CONTROL SYSTEM F BRAKES BRC A · brc-1 brake control system f brakes contents c d e g h i j k...

Documents

Transcript of BRAKE CONTROL SYSTEM F BRAKES BRC A · brc-1 brake control system f brakes contents c d e g h i j k...