± EMISSION CONTROL SYSTEM (2AZ±FE) EMISSION CONTROL SYSTEM (2AZ±FE) · 2010. 4. 26. · EMISSION...

12032–02

A59588AF1A–

AF1A+

E1

Rich

Lean

Time

14.73.3

Keep the engine speed

(V)

AirFuelRatio

A52605

A52599

–EMISSION CONTROL EMISSION CONTROL SYSTEM (2AZ–FE)12–1

1494Author: Date:

2002 CAMRY REPAIR MANUAL (RM881U)

EMISSION CONTROL SYSTEM (2AZ–FE)ON–VEHICLE INSPECTION

1. INSPECT AIR–FUEL RATIO COMPENSATION SYS-TEM

(a) Measure voltage between terminals of the engine ECM.Standard voltage:

Terminal Condition Voltage

AF1A+ ⇔ E1 IG switch ON 3.3 V

AF1A– ⇔ E1 IG switch ON 3.0 V

CAUTION:Connect test leads from the back side of the connector withthe ECM connected.HINT:Voltage between terminals of the engine ECM is kept constantregardless of the voltage of A/F sensor.(b) Connect the hand–held tester to the DLC3.(c) Select ”DATA MONITOR” – ”A/FS B1 S1”, ”A/FS B2 S1”

and ”O2S B1 S2” to display the monitor.(d) Warm up the A/F sensor with the engine speed at 2,500

r.p.m for approx. 2 minutes.

(e) Keep the engine speed at 2,500 r.p.m and confirm thatthe displays of ”A/FS B1 S1” and ”A/FS B2 S1” are asshown in the illustration.

CAUTION: The illustration differs from the real display. Only hand–held tester displays the waveform of A/F

sensor.(f) Confirm that the display of ”O2S B1 S2” changes between

0V to 1V with the engine speed at 2,500 r.p.m.

2. INSPECT FUEL CUT OFF RPM(a) Increase the engine speed to at least 3,500 r.p.m.(b) Use a sound scope to check for injector operating noise.(c) Check that when the throttle lever is released, injector operation noise stops momentarily and then

resumes.3. INSPECT EVAPORATIVE EMISSION CONTROL SYS-

TEM(a) After starting the engine, disconnect the vacuum hose

shown in the illustration.(b) Confirm vacuum occurs at the vsv port, when choosing

”ACTIVE TEST” and ”PURGE VSV” according to the dis-play on hand–held tester.

(c) Finish ”ACTIVE TEST”, then connect the vacuum hoseagain.

Vacuum Gauge

B06544

B06759

Vacuum Gauge

B06545

12–2–EMISSION CONTROL EMISSION CONTROL SYSTEM (2AZ–FE)

1495Author: Date:


(d) After going to ”ECM DATA MONITOR” on the hand–heldtester, choose ”PURGE VSV” to check the operation ofthe purge VSV.

(e) After warm up the engine and drive the vehicle, confirmthe VSV turns on from off.

4. INSPECT EVAP SYSTEM LINE(a) Warm up and stop the engine. Allow the engine to warm

up to normal operating temperature.(b) Install a vacuum gauge (EVAP control system test equip-

ment vacuum gauge) to the EVAP service port on thepurge line.

(c) Hand–Held Tester:Forced driving of the VSV for the EVAP.(1) Connect a hand–held tester to the DLC3(2) Start the engine.(3) Push the hand–held tester main switch ON.(4) Use the ACTIVE TEST mode on the hand–held tes-

ter to operate the VSV for the EVAP.

(d) If you have no Hand–Held Tester:Forced driving of the VSV for the EVAP.(1) Disconnect the VSV connector for the EVAP.(2) Connect the positive (+) and negative (–) leads from

the battery to the VSV terminals for the EVAP.(3) Start the engine.

(e) Check the vacuum at idleVacuum:Maintain at 0. 368 – 19.713 in.Hg (5 – 268 in.Aq) for over5 seconds.

HINT:If the vacuum does not change, you can conclude that the hoseconnecting the VSV to the service port has come loose or isblocked, or the VSV is malfunctioning.

(f) Hand–Held Tester:Conclude forced driving of the VSV for the EVAP.(1) Stop the engine.(2) Disconnect the hand–held tester from the DLC3.

B08626

Hose clipper

Air Drain Hose

Pressure Gauge

Pressure

B06546

A52634


1496Author: Date:


(g) If you have no Hand–Held tester:Conclude forced driving of the VSV for the EVAP.(1) Stop the engine.(2) Disconnect the positive (+) and negative (–) leads

from the battery from the VSV terminals for theEVAP.

(3) Connect the VSV connector for the EVAP.(h) Disconnect the vacuum gauge from the EVAP service

port on the purge line.(i) Connect a pressure gauge to the EVAP service port on

the purge line.

(j) Check the pressure.(1) Close off the air drain hose at the marked position

of the canister with a hose clipper or similar instru-ment.

(2) Add the pressure (13.5 – 15.5 in. Aq) from the EVAPservice port.

Pressure:2 minutes after the pressure is added, the gaugeshould be over 7.7 – 8.8 in.Aq.

HINT:If you can not add pressure, you can conclude that the hoseconnecting the VSV – canister – fuel tank has slipped off or theVSV is open.

(3) Check if the pressure decreases when the fuel tankcap is removed while adding pressure.

HINT:If the pressure dose not decrease when the filler cap is re-moved, then you can conclude that the hose connecting theservice port to the fuel tank is blocked, etc.(k) Disconnect the pressure gauge from the EVAP service

port on the purge line.

B08623

EVAP Line Hose

Disconnect

Air

B08624

EVAP Line Hose

Disconnect

Air

Disconnect

Purge Line Hose

Purge PortCap

B08625

Disconnect Air

Air Inlet Line Hose


1497Author: Date:


5. CHECK AIRTIGHTNESS IN FUEL TANK AND FILLERPIPE

(a) Disconnect the EVAP line hose from the charcoal canisterside and then pressurize and make the internal pressurein the fuel tank 4 kPa (41 gf/cm2, 0.58 psi).

(b) Check that the internal pressure of the fuel tank can behold for 1 minute.

(c) Check the connected portions of each hose and pipe.(d) Check the installed parts on the fuel tank.If there is no abnormality, replace the fuel tank and filler pipe.(e) Reconnect the EVAP line hose to the charcoal canister.

6. INSPECT FUEL CUT OFF VALVE AND FILL CHECKVALVE

(a) Disconnect the purge line hose and EVAP line hose fromthe charcoal canister.

(b) Plug the cap to the air drain hose.(c) Pressurize 4 kPa (41 gf/cm2, 0.58 psi) to the purge port

and check that there is ventilation through the EVAP linehose.

HINT:In the condition that the fuel is full, as the float value of the fillcheck valve is closed and has no ventilation, it is necessary tocheck the fuel amount (volume).(d) Check if there is any struck in the vent line hose and EVAP

line hose.If there is no stuck in hoses, replace the fuel cut off valve andfill check valve.(e) Reconnect the purge line hose and EVAP line hose to the

charcoal canister.

7. CHECK AIR INLET LINE(a) Disconnect the air inlet line hose from the charcoal canis-

ter.(b) Check that there is ventilation in the air inlet line.(c) Reconnect the air inlet line hose to the charcoal canister.

B11449


1498Author: Date:


8. VISUALLY INSPECT HOSES, CONNECTIONS ANDGASKETS

(a) Check for cracks, leaks or damage.

12033–01

A59502

A59503

Vent PortPurge Port

EVAP Port

Air Drain Port

CapAir

A59504

Purge PortAir Inlet Port

Air Drain Port EVAP PoetAir

A59505


Vacuum


1499Author: Date:


INSPECTION

1. CHARCOAL CANISTER ASSY

(a) Visually check the charcoal canister for cracks or dam-age.

(b) Inspect the charcoal canister operation.(1) Plug the vent port with the cap.(2) While holding the purge port closed, blow air (1.76

kPa, 18 gf/cm2, 0.26 psi) into the EVAP port andcheck that air flows from the air drain port.

(3) While holding the purge port and the air drain portclosed, blow air (1.76 kPa, 18 gf/cm2, 0.26 psi) intothe EVAP port and check that air does not flow fromthe air inlet port.

(4) Apply vaccum (3.43 kPa, 25.7 mmHg, 1.01 in.Hg)to the purge port, check that the vacuum dose notdecrease when the air inlet port is closed, andcheck that the vacuum decreases when the air inletport is released.

A59506


Vacuum

EVAP Port

Continuity

Ohmmeter

B08661

Ohmmeter

No ContinuityB08662

F

EAir

B08663

E

F

Battery

Air

B08664


1500Author: Date:


(5) While holding the air inlet port closed, apply vacuum(3.43 kPa, 25.7 mmHg, 1.01 in.Hg) to the EVAP portand check that air flows into the purge port.

If operation is not as spacified, replace the charcoal canister.(6) Remove the hose and cap from vent port.

(c) Inspect VSV for Pressure Swiching Valve(1) Using an ohmmeter, check that there is continuity

between the terminals.Resistance: 30 – 36 Ω at 20C (68F)

If there is no continuity, replace the VSV.

(2) Using an ohmmeter, check that there is no continu-ity between each terminal and the body.

If there is continuity, replace the VSV.

(3) Check that air does not flow from ports E to F.

(4) Apply battery positive voltage across the terminals.(5) Check that air flows from ports E to F.

If operation is not as specified, replace the VSV.

Cylinder Head Side

Clean Hose

P11834

Intake Manifold Side

P11831

A62233

Gasket

A62241

Ohmmeter

Continuity

A62242

Ohmmeter

No continuity


1501Author: Date:


2. VENTILATION VALVE SUB–ASSY

(a) Install clean hose to the PCV valve.(b) Inspect the PCV valve operation.

(1) Blow air into the cylinder head side, and check thatair passes through easily.

CAUTION:Do not suck air through the valve. Petroleum substancesinside the valve air harmful.

(2) Blow air into the intake manifold side, and checkthat air passes through with difficulty.

If operation is not as specified, replace the PCV valve.(c) Remove clean hose from the PCV valve.

3. FUEL TANK CAP ASSY

(a) Visually check if cap and/or gasket are deformed or dam-aged.

If necessary, repair or replace the cap.

4. VACUUM SWITCHING VALVE ASSY NO.1

(a) Inspect VSV for open circuit.(1) Using an ohmmeter, check that there is continuity



(b) Inspect the VSV for ground.(1) Using an ohmmeter, check that there is no continu-

ity between each terminal and the body.If there is continuity, replace the VSV.

A62243

Air

E

F

A62244

Air

E

F

Battery

Ohmmeter

Continuity

B09131

OhmmeterNo Continuity

B09132

A

B

Air

B09133


1502Author: Date:


(c) Inspect the VSV operation.(1) Check that air flows with a little difficulty from ports

E to F.

(2) Apply battery voltage across the terminals.(3) Check that air flows from port E to port F.


5. AIR CLEANER CAP SUB–ASSY

(a) Inspect VSV for Canister Closed valve (CCV).(1) Using an ohmmeter, check that there is continuity





(3) Check that air flows from ports A to B.

Battery

A

B

Air

B09134

A61830

+B HT

E1

A61829

+B HT

E1


1503Author: Date:


(4) Apply battery positive voltage across the terminals.(5) Check that air does not flow from ports A to B.


6. OXYGEN SENSOR

(a) Using an ohmmeter, measure the resistance between theterminals.Resistance:

Terminal No. Resistance

1 (HT) ⇔ 2 (+B) 11 – 16 Ω at 20C (68F)

1 (HT) ⇔ 4 (E1) No Continuity

If the resistance is not as specified, replace the sensor.

7. AIR FUEL RATIO SENSOR



1 (HT) ⇔ 2 (+B) 1.8 – 3.4 Ω at 20C (68F)



1202X–01

A59588

E1

AFL–

AFR+

AFR–

AFL+

Rich

Lean

Time

14.73.3

Keep the engine speed

(V)

AirFuelRatio

A52605

A52599

–EMISSION CONTROL EMISSION CONTROL SYSTEM (1MZ–FE)12–11

1504Author: Date:


EMISSION CONTROL SYSTEM (1MZ–FE)ON–VEHICLE INSPECTION

1. INSPECT AIR–FUEL RATIO COMPENSATION SYS-TEM

(a) Measure voltage between terminals of the engine ECM.Standard voltage:

Terminal Condition Voltage

AFR+ ⇔ E1 IG switch ON 3.3V

AFR– ⇔ E1 IG switch ON 3.0V

AFL+ ⇔ E1 IG switch ON 3.3V

AFL– ⇔ EI IG switch ON 3.0V

CAUTION:Connect test leads from the back side of the connector withthe ECM connected.HINT:Voltage between terminals of the engine ECM is kept constantregardless of the voltage of A/F sensor.(b) Connect the hand–held tester to the DLC3.(c) Select ”DATA MONITOR” – ”A/FS B1 S1”, ”A/FS B2 S1”

and ”O2S B1 S2” to display the monitor.(d) Warm up the A/F sensor with the engine speed at 2,500

r.p.m for approx. 2 minutes.(e) Keep the engine speed at 2,500 r.p.m and confirm that

the displays of ”A/FS B1 S1” and ”A/FS B2 S1” are asshown in the illustration.

CAUTION: The illustration differs from the real display. Only hand–held tester displays the waveform of A/F

sensor.(f) Confirm that the display of ”O2S B1 S2” changes between

0V to 1V with the engine speed at 2,500 r.p.m.

2. INSPECT FUEL CUT OFF RPM(a) Increase the engine speed to at least 3,500 r.p.m.(b) Use a sound scope to check for injector operating noise.(c) Check that when the throttle lever is released, injector operation noise stops momentarily and then

resumes.3. INSPECT EVAPORATIVE EMISSION CONTROL SYS-

TEM(a) After starting the engine, disconnect the vacuum hose

shown in the illustration.(b) Confirm vacuum occurs at the vsv port, when choosing

”ACTIVE TEST” and ”PURGE VSV” according to the dis-play on hand–held tester.

(c) Finish ”ACTIVE TEST”, then connect the vacuum hoseagain.

A59499

Vacuum Gauge

Battery

B06722

A59500

Vacuum Gauge

12–12–EMISSION CONTROL EMISSION CONTROL SYSTEM (1MZ–FE)

1505Author: Date:


(d) After going to ”ECM DATA MONITOR” on the hand–heldtester, choose ”PURGE VSV” to check the operation ofthe purge VSV.

(e) After warm up the engine and drive the vehicle, confirmthe VSV turns on from off.

4. INSPECT EVAP SYSTEM LINE(a) Warm up the engine and stop the engine. Allow the en-

gine to warm up to normal operating temperature.(b) Install a vacuum gauge (EVAP control system test equip-

ment vacuum gauge) to the EVAP service port on thepurge line.

(c) Hand–Held Tester:Forced driving of the VSV for the EVAP.(1) Connect a hand–held tester to the DLC3(2) Start the engine.(3) Push the hand–held tester main switch ON.(4) Use the ACTIVE TEST mode on the hand–held tes-

ter to operate the VSV for the EVAP.

(d) If you have no Hand–Held Tester:Forced driving of the VSV for the EVAP.(1) Disconnect the VSV connector for the EVAP.(2) Connect the positive (+) and negative (–) leads from

the battery to the VSV terminals for the EVAP.(3) Start the engine.

(e) Check the vacuum at idleVacuum:Maintain at 0.368 – 19.713 in.Hg (5 –268 in.Aq) for over5 seconds.

HINT:If the vacuum does not change, you can conclude that the hoseconnecting the VSV to the service port has come loose or isblocked, or the VSV is malfunctioning.

(f) Hand–Held Tester:Conclude forced driving of the VSV for the EVAP.(1) Stop the engine.(2) Disconnect the hand–held tester from the DLC3.

B08626

Hose clipper

Air Drain Hose

A59501

Pressure Gauge

Pressure

A52634

Fuel Tank Cap


1506Author: Date:


(g) If you have no Hand–Held tester:Conclude forced driving of the VSV for the EVAP.(1) Stop the engine.(2) Disconnect the positive (+) and negative (–) leads

from the battery from the VSV terminals for theEVAP.

(3) Connect the VSV connector for the EVAP.(h) Disconnect the vacuum gauge from the EVAP service

port on the purge line.(i) Connect a pressure gauge to the EVAP service port on

the purge line.

(j) Check the pressure.(1) Close off the air drain hose at the marked position

of the canister with a hose clipper or similar instru-ment.

(2) Add the pressure (13.5 – 15.5 in. Aq) from the EVAPservice port.

Pressure:2 minutes after the pressure is added, the gaugeshould be over 7.7 – 8.8 in.Aq.

HINT:If you can not add pressure, you can conclude that the hoseconnecting the VSV – canister – fuel tank has slipped off or theVSV is open.

(3) Check if the pressure decreases when the fuel tankcap is removed while adding pressure.

HINT:If the pressure dose not decrease when the filler cap is re-moved, then you can conclude that the hose connecting theservice port to the fuel tank is blocked, etc.(k) Disconnect the pressure gauge from the EVAP service

port on the purge line.

B08623

EVAP Line Hose

Disconnect

Air

B08624

EVAP Line Hose

Disconnect

Air

Disconnect

Purge Line Hose

Purge PortCap

B08625

Disconnect Air

Air Inlet Line Hose


1507Author: Date:


5. CHECK AIRTIGHTNESS IN FUEL TANK AND FILLERPIPE

(a) Disconnect the EVAP line hose from the charcoal canisterside and then pressurize and make the internal pressurein the fuel tank 4 kPa (41 gf/cm2, 0.58 psi).

(b) Check that the internal pressure of the fuel tank can behold for 1 minute.

(c) Check the connected portions of each hose and pipe.(d) Check the installed parts on the fuel tank.If there is no abnormality, replace the fuel tank and filler pipe.(e) Reconnect the EVAP line hose to the charcoal canister.

6. INSPECT FUEL CUT OFF VALVE AND FILL CHECKVALVE

(a) Disconnect the purge line hose and EVAP line hose fromthe charcoal canister.

(b) Plug the cap to the air drain hose.(c) Pressurize 4 kPa (41 gf/cm2, 0.58 psi) to the purge port

and check that there is ventilation through the EVAP linehose.

HINT:In the condition that the fuel is full, as the float value of the fillcheck valve is closed and has no ventilation, it is necessary tocheck the fuel amount (volume).(d) Check if there is any struck in the vent line hose and EVAP

line hose.If there is no stuck in hoses, replace the fuel cut off valve andfill check valve.(e) Reconnect the purge line hose and EVAP line hose to the

charcoal canister.

7. CHECK AIR INLET LINE(a) Disconnect the air inlet line hose from the charcoal canis-

ter.(b) Check that there is ventilation in the air inlet line.(c) Reconnect the air inlet line hose to the charcoal canister.

P12931


1508Author: Date:


8. VISUALLY INSPECT HOSES, CONNECTIONS ANDGASKETS

(a) Check for cracks, leaks or damage.

1202Y–01

A59502

A59503

Vent PortPurge Port

EVAP Port

Air Drain Port

CapAir

A59504


Air Drain Port EVAP PoetAir

A59505


Vacuum


1509Author: Date:


INSPECTION

1. CHARCOAL CANISTER ASSY

(a) Visually check the charcoal canister for cracks or dam-age.

(b) Inspect the charcoal canister operation.(1) Plug the vent port with the cap.(2) While holding the purge port closed, blow air (1.76

kPa, 18 gf/cm2, 0.26 psi) into the EVAP port andcheck that air flows from the air drain port.

(3) While holding the purge port and the air drain portclosed, blow air (1.76 kPa, 18 gf/cm2, 0.26 psi) intothe EVAP port and check that air does not flow fromthe air inlet port.

(4) Apply vacuum (3.43 kPa, 25.7 mmHg, 1.01 in.Hg)to the purge port, check that the vacuum dose notdecrease when the air inlet port is closed, andcheck that the vacuum decreases when the air inletport is released.

A59506


Vacuum

EVAP Port

A59507

Ohmmeter

Continuity

A59508

Ohmmeter

No Continuity

A59509

AirE

F

A59510

E

Air

F


1510Author: Date:


(5) While holding the air inlet port closed, apply vacuum(3.43 kPa, 25.7 mmHg, 1.01 in.Hg) to the EVAP portand check that air flows into the purge port.

If operation is not as specified, replace the charcoal canister.(6) Remove the hose and cap from vent port.

(c) Inspect VSV for pressure switching valve(1) Using an ohmmeter, check that there is continuity

between the terminals.Resistance: 37 – 44 Ω at 20C (68F)51 – 62 Ω at 120C (248F)




(3) Check that air does not flow from ports E to F.

(4) Apply battery positive voltage across the terminals.(5) Check that air flows from ports E to F.


A59511

Cylinder Head Side

Clean Hose

A59512

Intake Manifold Side

A62233

Gasket

A59514

EF

Continuity

Ohmmeter

A59515

No Continuity

Ohmmeter


1511Author: Date:


2. VENTILATION VALVE SUB–ASSY

(a) Install clean hose to the PCV valve.(b) Inspect the PCV valve operation.

(1) Blow air into the cylinder head side, and check thatair passes through easily.

CAUTION:Do not suck air through the valve. Petroleum substancesinside the valve air harmful.

(2) Blow air into the intake manifold side, and checkthat air passes through with difficulty.

If operation is not as specified, replace the PCV valve.(c) Remove clean hose from the PCV valve.

3. FUEL TANK CAP ASSY

(a) Visually check if cap and/or gasket are deformed or dam-aged.

If necessary, repair or replace the cap.

4. EMISSION CONTROL VALVE SET

(a) Inspect VSV for EVAP.(1) Using an ohmmeter, check that there is continuity


If there is no continuity, replace the VSV set.


If there is continuity, replace the VSV set.

A59516

Air

E

F

A59517

Air

E

F

A59518

Continuity

Ohmmeter

A60491

No Continuity Ohmmeter

A59520

B

Air A


1512Author: Date:


(3) Check that air flows with difficulty from ports E to F.

(4) Apply battery voltage across the terminals.(5) Check that air flows from ports E to F.

If operation is not as specified, replace the VSV set.

5. AIR CLEANER CAP SUB–ASSY

(a) Inspect VSV for Canister Closed valve (CCV).(1) Using an ohmmeter, check that there is continuity





(3) Check that air flows from ports A to B.

A60492Battery

B

AirA

A62378

2 1

34

+B HT

E1

A52607E1


1513Author: Date:


(4) Apply battery positive voltage across the terminals.(5) Check that air does not flow from ports A to B.


6. OXYGEN SENSOR OXYGEN NO.2 SENSOR



1 (HT) ⇔ 2 (+B) 11 – 16 Ω at 20C (68F)



7. AIR FUEL RATIO SENSOR



1 (HT) ⇔ 2 (+B) 1.8 – 3.4 Ω at 20C (68F)



1202Z–01

A59589

DisconnectOhmmeter

E2

VC

Ohmmeter

A59590

VC(+)E2(–)

A59591

E2(–) EGLS(+)

Disconnect

–EMISSION CONTROL EGR SYSTEM (1MZ–FE)12–21

1514Author: Date:


EGR SYSTEM (1MZ–FE)ON–VEHICLE INSPECTION

1. INSPECT EGR VALVE POSITION SENSOR(a) Inspect the resistance of the EGR valve position sensor.

(1) Disconnect the EGR valve position sensor connec-tor.

(2) Using an ohmmeter, measure the resistance be-tween the terminals VC and E2.

Resistance: 1.5 – 4.3 k ΩIf the resistance is not as specified, replace the EGR valve posi-tion sensor.

(3) Reconnect the EGR valve position sensor connec-tor.

(b) Inspect the power output voltage of the EGR valve posi-tion sensor.(1) Disconnect the vacuum hose from the EGR valve.(2) Turn the ignition switch ON.(3) Connect a voltmeter to terminals VC and E2 of the

ECM, and measure the power source voltage.Voltage: 4.5 – 5.5V

(4) Connect a voltmeter to terminals EGLS and E2 ofthe ECM, and measure the power outlet voltage un-der the following conditions. Using the MITYVAC (Hand–Held Vacuum

Pump), apply a vacuum (17.3 kPa,130mmHg, 5.1 in.Hg) to the EGR valve.

Voltage: 3.2 – 5.1 V Release the vacuum from the EGR valve.

Voltage: 0.4 – 1.6 VIf the voltage is not as specified, replace the EGR valve positionsensor.

(5) Reconnect the vacuum hose to the EGR valve.

12030–01

S05454

S05478

S Port

Z Port

S05476

(kPa, mmHg,in.Hg)

Vac

uum

TimePumping (3 Times)

10 sec.

A61681

12–22–EMISSION CONTROL EGR SYSTEM (1MZ–FE)

1515Author: Date:


INSPECTION

1. EGR VALVE ASSY

(a) Check for sticking and heavy carbon deposits.If a problem is found, replace the EGR valve.

2. VACUUM CONTROL VALVE

(a) Connect the MITYVAC (Hand–Held Vacuum Pump) toport S of the VCV.

(b) Plug port Z completely with fingers.

(c) Perform pumping 3 times and apply vacuum as shown inthe illustration.

(d) Stop the performing pumping and check the indicated val-ue of the MITYVAC after about 10 seconds.Standard value: 15 – 24 kPa (112 – 180 mmHg, 4.4 – 7.1 in.Hg)

If the indicated value is not as specified, replace the VCV.

3. E.G.R GAS TEMPERATURE SENSOR

(a) Resistance inspection(1) using an ohmmeter, measure the resistance be-

tween the terminals.Resistance:

At 50C (122F) 69.4 – 88.5 Ω

At 100C (212F) 11.89 – 14.37 Ω

At 150C (302F) 2.79 – 3.59 Ω

S04514

Ohmmeter Continuity

S04513

Ohmmeter

No Continuity

S04515

E

Air

G

S04512

Air

Battery

–EMISSION CONTROL EGR SYSTEM (1MZ–FE)12–23

1516Author: Date:


4. VACUUM SWITCHING VALVE NO.1

(a) Inspect VSV for open circuit.(1) Using an ohmmeter, check that there is continuity



(b) Inspect VSV for ground.(1) Using an ohmmeter, check that there is no continu-

ity between each terminal and the body.If there is continuity, replace the VSV.

(c) Inspect VSV operation.(1) Check that air flows from port E to port G.

(2) Apply battery positive voltage across the terminals.(3) Check that air flows from port E to port F.


12031–01

A62373

A59592

A59592

12–24–EMISSION CONTROL EGR VALVE ASSY (1MZ–FE)

1517Author: Date:


EGR VALVE ASSY (1MZ–FE)REPLACEMENT

1. REMOVE EGR PIPE SUB–ASSY NO.2

(a) Remove the 4 nuts, EGR pipe and 2 gaskets.

2. REMOVE EGR VALVE ASSY

(a) Disconnect the EGR gas temperature sensor connectorand clamp.

(b) Disconnect the EVAP hose from the EGR valve hook.(c) Disconnect the vacuum hose from the EGR valve.(d) Disconnect the EGR valve position sensor connector.(e) Remove the 3 nuts, EGR valve and gasket.

3. REMOVE E.G.R GAS TEMPERATURE SENSOR

4. REPLACE EGR VALVE ASSY

5. INSTALL E.G.R GAS TEMPERATURE SENSOR

Torque: 20 N ⋅m (200 kgf ⋅cm, 14 ft ⋅lbf)

6. INSTALL EGR VALVE ASSY

(a) Install a new gasket and the EGR valve with the 3 nuts.Torque: 12 N ⋅m (120 kgf ⋅cm, 9 ft ⋅lbf)

(b) Connect the EGR valve position sensor connector.(c) Connect the vacuum hose to the EGR valve.(d) Connect the EVAP hose to the EGR valve hook.(e) Connect the EGR gas temperature sensor connector and

clamp.

A62373

–EMISSION CONTROL EGR VALVE ASSY (1MZ–FE)12–25

1518Author: Date:


7. INSTALL EGR PIPE SUB–ASSY NO.2

(a) Install 2 new gaskets and the EGR pipe with the 4 nuts.Torque: 12 N ⋅m (120 kgf ⋅cm, 9 ft ⋅lbf)

± EMISSION CONTROL SYSTEM (2AZ±FE) EMISSION CONTROL SYSTEM (2AZ±FE) · 2010. 4. 26. · EMISSION...

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Transcript of ± EMISSION CONTROL SYSTEM (2AZ±FE) EMISSION CONTROL SYSTEM (2AZ±FE) · 2010. 4. 26. · EMISSION...