;I!berlinasportivo.com/Technical/lancia/Thema832/scan engine...THEMA 8.32 Engine Fuel system:...

THEMA 8.32 EngineFuel system: diagnostic diagrams

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EngineFuel system: diagnostic diagrams10.

THEMA 8.32

CHECKING LOAD ENGAGEMENT SIGNALS (FROM AIR CONDITIONING RELAY CONTACTS)

ELECTRONIC ANALYZER MODEL PR01

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THEMA 8.32

CHECKING LOAD ENGAGEMENT SIGNALS (FROM AIR CONDITIONING RELAY COIL)

ELECTRONIC ANALYlER MODEL PR01

oVOLT/OHM/PULSE

START ON MILLISEC IGNITION

@A

I@B

CtT~1T ~o I OVERLOADPULSE GENERATOR

RANGE Multimeter position100V DC

LOW HIGH

@IGNITION

POINT A POINT Bo

ON-12V.D.C.

IPATENT PENDING I

Selector positionA 32B 35

Turn the ignition switch to the ON position. Switch on the air conditioning.

Instrument reading: NORMAL VALUE more than 11 V (battery voltage)

If the reading is not the same as the normal voltage value, check the continuity of the circuit shown in the dia-gram overleaf usiI).gan ohmmeter. .


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THEMA 8.32

CHECKING AIR FLOW METER POTENTIOMETER RESISTOR CONTINUITY (PLUGS 1 and 3)


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Fuel system:Engine

diagnostic diagrams10.

THEMA 8.32

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. EngineFuel system: diagnostic diagrams10.

THEMA 8.32

CHECKING AIR FLOW METER POTENTIOMETER SLIDING CONTACTS (PLUGS 1 and 2)

ELECTRONIC ANALVZER MODEL PR01

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OVERLOAD

START ON MILLlSEC IGNITION

PULSE GENERATOR

RANGE Multimeter position100 V DC

LOW HIGH

@IGNITION

POINT A POINTBo

ON.12V.D.C.

IPATENT PENDING I


This test should only be carried out during the diagnosis of the hydraulic section of the system becauseit is facilitated by the removal of the inlet manifold.

Connect a cable between the instrument red bush (A) and the positive battery pole.Remove the sleeve and the pipe which connect the air filter to the air flow meter.

Instrument reding: NORMAL VALUE

{

-with the floating plate in the rest position - 11V(depending on the battery voltage).

- as the floating plate is gradually pressed, thevoltage value should decreasesteadily as far as 4- 5 V.

Fuel system:Engine


THEMA 8.32

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THEMA 8.32

BOSCH KE3-JETRONIC ELECTRONICALLY CONTROLLED MECHANICAL FUEL INJECTION SYSTEM

146

SUMMARY OF INFORMATION AND TESTS

Selector Not OKOrder of position Multimeter Normaloperations position Operations to be carried out values

OK SeeA B page

Checkearth at connection18 lowerthan continue1 18 00 100il Connectthe instrumentblackbushto thenegative lil ...118

battery terminal using a cable

Check the earth at connection 35 lower than continue2 35 00 100il Connect the instrument b1ackbush to the negative lil ...120

battery terminal using a cable

Check KE3-Jetronic control unit supply and idle battery continue3 14 18 100 V DCservo regulator from protective relay and fuse voltage ...

122above 11V

4 30 18 PULSE Check rpm impulses coming from Microplex igni- abovecontinue

124LOW tion electronic control unit 20 ...Check continuity of pressure servo regulator win- continue5 04 05 lOOnding

15+25il...

126

100ilCheck continuity of idle servo regulator winding

5+12il6 17 14 Disconnect the protective relay continue

pulse ... 128Check operation of idle servo regulator.Press the tickinggenerator START button heard20 msecil at 20.C2-4kil

dependent at 50°Ccontinue

7 03 18 on the Check coolant temperature sensor resistance 600-900il ... 130engine at 90°Ctemperature 100-300il

accelerator pedal in lower than continue

Chock ,wit'" on hut- {

rest position IQ8 28 35 100il terfly valve (idle con- ...

132tact) acceleratorpedal part- EEEly depressed

Chock ,witch on but-. {

acceleratorpedal in EEErest position continue

9 31 35 100il terfly valve (full . ...134

power) . acceleratorpedalfully lower thandepressed IQ

Check continuity of cold start injector coil win-

IOOil dingo 3-5ilDisconnect the protective relay and bridge termi-nals 15 and 87 continue

10 14 16...

136

pulse Check dynamic operation of cold start injector tickinggenerator Press the START button heard20 msec.

Check load engagement signal (from air conditio- above continue11 33 35 100 V DC ning relay contacts) 11V ... 138(only for vehicles with air conditioniong)

Check load engagement signal (from air conditio- above continue12 32 35 100V DC ning relay coil) 11V ... 140(only for vehicles with air conditioning)

10 kil Check continuity of air flow meter potentiometer 4-4,3 kilcontinue

13 26 35resisstor (plugs 1 and 3) ...

142

. . { wUh flMUng

batteryCheckaIr flowmeterpotentlOme- plate in rest voltage

14 26 23 100V DC ter slidingcontacts(plugs2 and 1) positionabove 11V End 144Connect the instrument red bush to

thepositivebattery terminalusing withfloating if OKa cable plate fully de- 4-5 V

pressed

, EngineIgnition: diagnostic diagrams

10.

THEMA 8.32

MICROPLEX ELECTRONIC IGNITION WIRING DIAGRAM

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12131415

-

"* BatteryTDC

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I. Microplexelectronic ignition control unit - 2. Ignition unit with coil - 3. Bosch injection system butterflyvalveswitch - 4. Hightensiondistributorfor cylinders8-2-3-5- 5. Hightensiondistributor for cylinders]-4-7-6 - 6. TDC sensor (on cylinder block/crankcase, flywheel side) - 7. Rpm sensor on flywheel- 8. Revcounter - 9. Battery - 10.Ignition switch - 11.Spark plugs - 12.Seriesinlet for Fiat-Lancia Tester - 13.Seriesoutlet for Fiat-Lancia Tester - 14.Bosch electronic injection control - 15.Earth for Fiat-LanciaTester.

Microplex electronic ignition controlunit terminal connections

,-- I

I

14 15 16 17 18 19 20 21 22 23 24 25I

c:::::::J[::::::Jc:::::::Jr:::Jc:::::::Jc:::::Jc:::::Jc:::::::J[::::::Jc:::::::Jc:::::::J[::::::J

I . c:::::J c:::::::Jc:::::::Jc:::::::J[::::::Jc::J c::J c::J c::J c::J [::::::Jc:::J c::J --,~~-~- 5 ~ 7 ~ 9 _1~_~1~~I. TDC sensor signal - 2. TDC sensor earth - 3. Rpm sensor earth - 4. Wiring for earth ON/OFF n° 2 -5. Earth for 1st external power module - 6. Earth for 2nd external power module - 7. Wiring for earthON/OFF n° ] - 8.Wiringfor earth ON/OFF n°3 - 9. 2ndexternalpowermodulecontrol - 10.Earth for 2ndexternal power module inlet - ] ]. Control unit supply from negative battery pole - ]2. Earth for Fiat-LanciaTester - ]3. Control unit supply from positive battery pole (under ignition key) - 14. Ist external powermodule control - ] 5. Earth for ]st externa] power module inlet - ] 6. Engine rpm signal - 17. Series inlet forFiat-Lancia Tester - 18. Wiring for ON/OFF n° I - 19. Earth switch for signalling" butterfly closed (releasecurve) on KE3-Jetronic injection system - 20. Spare - 21. Series outlet for Fiat-Lancia Tester - 22. Absolutepressure sensor signal- 23. Wiring for ON/OFF n° 3 - 24. Bosch KE3-Jetronic injection system control (engi-I1P ,'nm c::i(1n~])- ?" Sn::\rp. .

EngineIgnitIon: diagnostic diagrams10.

THEMA 8.32

CHECKING MICROPLEX ELECTRONIC IGNITION SYSTEM CONTROL UNIT EARTH


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THEMA 8.32

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EngineIgnition: diagnostic diagrams10.

THEMA 8.32

CHECKING MICROPLEX ELECTRONIC IGNITION CONTROL UNIT SUPPLY

ELECTRONICANALVZER MODEL PR01

oVOLT/OHM/PULSE


(@}A

I

(@}B

[t~n;;fT ~o I OVERLOADPULSE GENERATOR

RANGE Multimeter position100 V DC

LOW HIGH

@IGNITION

POINT A POINT B(\)

ON-12V.D.C.

I PATENT PENDING I


Ignition switch in ON positipn

Instrument reading: NORMAL VALUE battery voltage above 11 V

If the reading does not correspond to the value given. check the continuity of the circuit shown in the dia-gram overleaf using an ohmmeter.

THEMA 8.32

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THEMA 8.32

CHECKING CONTINUITY OF TDC SENSOR (ON CYLINDER BLOCK/CRANKCASE, FLYWHEELSIDE)


oVOLT/OHM/PULSE


(@)A

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I100 1000 '~K'.! I

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mow~ TEST ~ RANGE Multimeter position1000QLOW HIGH@

IGNmON

POINT A POINTB\)

ON.12V.D.C.

IPATENT PENDING I


Instrument reading: NORMAL VALUE 600 - 800 Q

If the reading is not the same as the recommended resistance value, disconnect the TDC sensor connector andconnect the tester resistor supplied with the instrument (68.Q) in its place.Repeat the test: if the reading is now the same as the tester resistor, replace the TDC sensor as it is faulty.If the reading is different, check the continuity and the insulation of the circuit shown in the diagram overleaf.

THEMA 8.32

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Engine .Ignition: diagnostic diagrams10.

THEMA 8.32

CHECKING CONTINUITY OF ENGINE RPM SENSOR (ON BELL HOUSING)

ELECTRONIC ANALYZER MODEiL PR01

oVOLT/OHM/PULSE

START ON MILlISEC IGNITION

PULSE GENERATOR

mow~ TEST ~ RANGE Multimeter position1000QLOW HIGH@

IGNITION

POINT A POINTBo

ON.12V.D,C.

I PATENT PENDING I


Instrument reading: NORMAL VALUE 600 - 800 Q

If the reading differs from the recommended resistance value, disconnect the rpm sensor connector and con-nect the tester resistor supplied with the instrument (68 Q) in its place.Repeat the test: if the reading is the same as the tester resistor, replace the rpm sensor because it is defective.If the reading is different, check the continuity of the circuit shown in the diagram overleaf using an ohmme-ter.

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THEMA 8.32

CHECKING TDC SENSOR GAP AND MAGNETIC EFFICIENCY (ON CYLINDER BLOCK/CRANK-CASE, FLYWHEEL SIDE)


oVOLT/OHM/PULSE

(@)A

I

@B

I

oI

OVERLOAD

Multimeter positionPULSE

START ON MILLlSEC IGNITION,-OHMS--, 100v

100 1000 10K 1001( DC PULSE

L~o;PULSE GENERATOR -

RANGE Switch positionLOW

LOW HIGH

Q)IGNmON

POINTA POINTBo

ON-12V.D.C.

IPATENT PENDING I


Start up the engine for around 15 seconds

Instrument reading: NORMAL VALUE above 7

If the reading does not correspond with the value given, check and if necessary adjust the TDC sensor gapRepeat the test. If the result is still negative, replace the TDC sensor as it is faulty.


10.

THEMA 8.32

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THEMA 8.32

CHECKING ENGINE RPM SENSOR GAP AND MAGNETIC EFFICIENCY (ON BELL HOUSING)


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OVERLOAD

Multimeter positionPULSE


PULSE GENERATOR

RANGE Switch positionHIGH

LOW IGNITION

POINT A POINTBo

ON-12V;D.C.

IPATENT PENDING I


Start up the engine for around 15 seconds

Instrument reading: NORMAL VALUE above 4

If the reading differs from the figure given, check and if necessary adjust the rpm sensor gap.Repeat. the test. If the result is still negative, replace the rpm sensor.

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If the results of all these tests conform with the values given, check the continuity of the ignition coilprimary windings and the cables connecting them to the Microplex electronic control unit using anohmmeter.

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THEMA 8.32

CHECKING IGNITION COIL POWER MODULE (13 A)


oVOLT/OHM/PULSE

@)AI

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PULSE GENERATOR

RANGE Multimeter positionPULSE

LOW HIGH

@IGNmON

POINT A POINTBo

ON.12V.D.C.

IPATENT PENDING I

Selector positionA 09BIO

Insert the impulse generator (G) in the instrument red (A) and blac\

;I!berlinasportivo.com/Technical/lancia/Thema832/scan engine...THEMA 8.32 Engine Fuel system:...

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Transcript of ;I!berlinasportivo.com/Technical/lancia/Thema832/scan engine...THEMA 8.32 Engine Fuel system:...