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23A-1

GROUP 23A

AUTOMATICTRANSMISSIONCONTENTS

SERVICE SPECIFICATIONS . . . . . . . 23A-3

LUBRICANTS . . . . . . . . . . . . . . . . . . 23A-3

SPECIAL TOOLS . . . . . . . . . . . . . . . . 23A-4

TROUBLESHOOTING . . . . . . 23A-8

TROUBLESHOOTING . . . . . . 23A-122

TROUBLE SYMPTOM CHART . . . . . . . . . . 23A-122SYMPTOM PROCEDURES . . . . . . . . . . . . 23A-122

Continued on next page

WARNINGS REGARDING SERVICING OF SUPPLEMENTAL RESTRAINT SYSTEM (SRS) EQUIPPED VEHICLES

Improper service or maintenance of any component of the SRS, or any SRS-related component, can lead to personalinjury or death to service personnel (from inadvertent firing of the air bag) or to the driver (from rendering theSRS inoperative).

Service or maintenance of any SRS component or SRS-related component must be performed only at an authorizedMITSUBISHI dealer.

MITSUBISHI dealer personnel must thoroughly review this manual, and especially its GROUP 52B - Supplemental

Restraint System (SRS) before beginning any service or maintenace of any component of the SRS or anySRS-related component.NOTEThe SRS includes the following components: front impact sensors, SRS-ECU, SRS warning lamp, airbag module, clockspring and interconnecting wiring. Other SRS-related components (that may have to be removed/installed in connectionwith SRS service or maintenace) are indicated in the table of contents by an asterisk (*).

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23A-2

ON-VEHICLE SERVICE . . . . . . . . . . 23A-124ESSENTIAL SERVICE . . . . . . . . . . . . . . . . . 23A-124A/T FLUID CHECK . . . . . . . . . . . . . . . . . . . . 23A-124A/T FLUID REPLACEMENT . . . . . . . . . . . . . 23A-125A/T FLUID COOLER LINE FLUSHING . . . . 23A-126

THROTTLE POSITION SENSOR (TPS)ADJUSTMENT . . . . . . . . . . . . . . . . . . . . . . . 23A-127INHIBITOR SWITCH CONTINUITYCHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23A-127INHIBITOR SWITCH AND CONTROLCABLE ADJUSTMENT . . . . . . . . . . . . . . . . . 23A-127A/T CONTROL COMPONENT LOCATION . 23A-128A/T CONTROL COMPONENT CHECK . . . . 23A-129THROTTLE POSITION SENSOR (TPS)CHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23A-129INHIBITOR SWITCH CHECK . . . . . . . . . . . . 23A-129CRANK ANGLE SENSOR CHECK . . . . . . . 23A-129STOP LAMP SWITCH CHECK . . . . . . . . . . 23A-129A/T CONTROL RELAY CHECK . . . . . . . . . . 23A-129A/T CONTROL SOLENOID VALVEASSEMBLY CHECK . . . . . . . . . . . . . . . . . . . 23A-130

A/T FLUID TEMPERATURE SENSORCHECK . . . . . . . . . . . . . . . . . . . . . . . . . . . . 23ATORQUE CONVERTER STALL TEST . . . . 23AHYDRAULIC PRESSURE TESTS . . . . . . . 23AHYDRAULIC CIRCUIT . . . . . . . . . . . . . . . . 23A

LINE PRESSURE ADJUSTMENT . . . . . . . 23ASELECTOR LEVER OPERATION CHECK 23AKEY INTERLOCK MECHANISM CHECK . . 23ASHIFT LOCK MECHANISM CHECK . . . . . . 23A

TRANSMISSION CONTROL* . . . . . . 23A-REMOVAL AND INSTALLATION . . . . . . . . 23ADISASSEMBLY AND REASSEMBLY . . . . . 23ASHIFT SWITCH ASSEMBLYCONTINUITY CHECK . . . . . . . . . . . . . . . . . 23A

A/T KEY INTERLOCK ANDSHIFT LOCK MECHANISMS* . . . . . . 23A-REMOVAL AND INSTALLATION . . . . . . . . 23A

TRANSMISSION ASSEMBLY . . . . . . 23A-REMOVAL AND INSTALLATION . . . . . . . . 23A

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SERVICE SPECIFICATIONSAUTOMATIC TRANSMISSION 23A-3

SERVICE SPECIFICATIONSM1231000300337

LUBRICANTSM1231000400390

Item Standard value

A/T fluid temperature sensor resistance k Ω At 0 ° C 16.7 − 20.5

At 20 ° C 7.3 − 8.9

At 40 ° C 3.4 − 4.2

At 60 ° C 1.9 − 2.2

At 80 ° C 1.0 − 1.2

At 100 ° C 0.57 − 0.69

Damper clutch control (DCC) solenoid valve coil resistance (at 20 ° C) Ω 2.7 − 3.4

Low & reverse (LR) solenoid valve coil resistance (at 20 ° C) Ω 2.7 − 3.4

Second (2ND) solenoid valve coil resistance (at 20 ° C) Ω 2.7 − 3.4

Underdrive (UD) solenoid valve coil resistance (at 20 ° C) Ω 2.7 − 3.4

Overdrive (OD) solenoid valve coil resistance (at 20 °C) Ω 2.7 − 3.4

Stall speed r/min 2,100 − 2,600

Line pressure MPa 1.01 − 1.05Protruding length of stabilizer bar mounting bolt mm 22 ± 1.5

Item Specified lubricants Capacity L

A/T fluid DIA QUEEN ATF SP III 7.7

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SPECIAL TOOLSAUTOMATIC TRANSMISSION23A-4

SPECIAL TOOLSM1231000

Tool Number Name Use

MB991955A: MB991824B: MB991827C: MB991910D: MB991911E: MB991825F: MB991826

MUT-III sub assemblyA: Vehicle

communicationinterface (V.C.I.)

B: MUT-III USB cableC: MUT-III main

harness A (Vehicleswith CANcommunicationsystem)

D: MUT-III mainharness B (Vehicleswithout CANcommunicationsystem)

E: MUT-IIImeasurementadapter

F: MUT-III triggerharness

Checking the A/T (Diagnosis displayusing the MUT-III)

MB991502 MUT-II sub assembly Checking the A/T (Diagnosis displayusing the MUT-II)

MB991910

MB991826

MB991955

MB991911

MB991824

MB991827

MB991825

A

B

C

D

E

F

DO NOT USED

B991502

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SPECIAL TOOLSAUTOMATIC TRANSMISSION 23A-5

MB991223A: MB991219B: MB991220C: MB991221D: MB991222

Harness setA: Test harnessB: LED harnessC: LED harness

adapterD: Probe

Check at the ECU terminalsA: Connector pin contact inspectionB: Power circuit inspectionC: Power circuit inspectionD: Commercial tester connection

MD998330(includingMD998331)

Oil pressure gauge(3.0 MPa)

Hydraulic pressure measurement

MD998332 Adapter

MD998900


MB991223

AC103525

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SPECIAL TOOLSAUTOMATIC TRANSMISSION23A-6

MB991453 Engine hangerassembly

When the engine hanger is used:Supporting the engine assemblyduring removal and installation of thetransmission assemblyNOTE: Special tool MB991454 is apart of engine hanger attachment setMB991453.MB991454 Engine hanger

balancer

MB991527 Engine hanger

MB991895 Engine hanger

MB991928A: MB991929B: MB991930C: MB991931D: MB991932E: MB991933

F: MB991934

Engine hangerA: Joint (50) × 2B: Joint (90) × 2C: Joint (140) × 2D: Foot (standard) × 4E: Foot (short) × 2

F: Chain and hookassembly

MB991897 Ball joint remover Knuckle and tie rod end ball jointdisconnectionNOTE: Steering linkage puller(MB990635 or MB991113)is alsoused to disconnect knuckle and tierod end ball joint.

MB990241A: MB990242B: MB990244

Axle shaft pullerA: Puller shaftB: Puller bar

Removal of the drive shaft


B991453

B991454

B991527

MB991895

B991928

A

BC

D

E

F

Slide bracket (HI)

AC106827

MB990241AB

AB

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SPECIAL TOOLSAUTOMATIC TRANSMISSION 23A-7

MB991460 Plug Prevention of transmission fluid drainand of entry of foreign objects

MB990767 End yoke holder Fixing of the hub

A: MB991017B: MB990998C: MB991000

A, B: Front hubremover andinstaller

C: Spacer

• Removal of the hub• Provisional holding of the wheel

bearing• Measurement of hub starting

torque• Measurement of wheel bearing

axial playNOTE: MB991000, which belongsto MB990998, should be used asa spacer.


B990767

AC100320AB

A

BC

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TROUBLESHOOTING AUTOMATIC TRANSMISSION23A-8

TROUBLESHOOTING STANDARD FLOW OF DIAGNOSISTROUBLESHOOTING

M1231013500331

DIAGNOSIS FUNCTIONM1231019000204

N RANGE LAMP SYSTEM

If there is a problem with any of the A/T system, theN range lamp will flash at a rate of approximately1Hz.If the N range lamp is flashing at a rate ofapproximately 1 Hz, check the diagnosis output.

N range lamp flashing item• Input shaft speed sensor system• Output shaft speed sensor system• Solenoid valve system• Non-synchronization at various shift ranges• A/T control relay system

Ask about trouble symptoms

Check the A/T fluid

Check the trouble symptoms

Replace the A/T fluid

To INSPECTION CHART FORTROUBLE SYMPTOMS

Reading of a diagnosis code

Erase of a diagnosis code Check the trouble symptoms

Inhibitor switch, TPS check

Road test

Recheck diagnosis codes

To INSPECTION CHART FORDIAGNOSIS CODES

To INSPECTION CHART FORTROUBLE SYMPTOMS

Check for the cause

Repair

Confirmation test (road test)

INTERMITTENT MALFUNCTIONS(Refer to GROUP 00 - Points toNote for Intermittent Malfunction)

Completed

NG

OK

Communication with theMUT-II not possible

Diagnosis code outputexists

No diagnosis code output

Abnormality exists (no diagnosis code output)

Abnormality exists(diagnostic troublecode output)

No abnormality

Found Not found

OKOKNG

AC212495

NG

Diagnosis code outputexists

No diagnosis code output

Communication with theMUT-II/III not possible

AB

AC304842 AB

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TROUBLESHOOTING AUTOMATIC TRANSMISSION 23A-9

NOTE: If the "N" range lamp is flushing at a rate ofapproximately 2 Hz the A/T fluid temperature is high.(It flushes when the fluid is approximately 125 °C ormore and goes off when the fluid is approximately115 ° C or less).

METHOD OF READING THE DIAGNOSIS

CODEUse the MUT-II/III to read the diagnosis code. (Referto GROUP 00 − How to UseTroubleshooting/Inspection Service Points P.00-6 ).

METHOD OF ERASING THE DIAGNOSISCODEUse the MUT-II/III to erase the diagnosis code (Referto GROUP 00 − How to UseTroubleshooting/Inspection Service Points P.00-6 ).

ROAD TESTM1231007800388

Procedure Pre-test/operation conditions

Test/operation Judgment value Checkitem

Diagnosiscode No.

Inspectionprocedure ifthere is anabnormality

1 Ignition switch:

LOCK (OFF)position

Ignition switch

(1) ON

Data List No.54

(1) System voltage[V]

A/T

controlrelay

54 A/T control

relaysystem

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2 Ignition switch:ONEngine:

StoppedSelector leverposition: P

Selector leverposition(1) P

(2) R(3) N(4) D

Data List No.61(1) P(2) R

(3) N(4) D

Inhibitorswitch

27, 28 Inhibitoswitchsystem

Selector leverposition(1) D(2) Select the sport

mode(3) Upshift and hold

the selector leverin that position(2nd gear)

(4) Downshift andhold the selectorlever in thatposition (1st gear)

Data List No.67(1) OFF(2) ON(3) ON(4) ON

Selectswitch

− Shift sassenbsystem

Data List No.68(1) OFF(2) OFF(3) ON

(4) OFF

Upshiftswitch

Data List No.69(1) OFF(2) OFF(3) OFF(4) ON

Downshiftswitch

Shift indicator lamp(1) Only D

illuminates(2) Only 1



illuminates

Shiftindicatorlamp

Accelerator pedal(1) Fully closed(2) Depressed(3) Fully opened

Data List No.11(1) 335 − 935 mV(2) Gradually

increases from(1)

(3) 4,500 − 5,000mV

TPS 11, 12, 14 TPSsystem

Brake pedal

(1) Depressed(2) Released

Data List No.26

(1) ON(2) OFF

Stop lamp

switch

26 Stop la

switchsystem

3 Ignition switch:START

Starting test at P orN position

Starting should bepossible

Startingpossible/notpossible

− Startinpossib



Diagnosiscode No.

Inspectproceduthere isabnorm

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4 Driving afterengine haswarmed up

Drive for 15 minutesor more until the A/Tfluid temperature

rises to 70−

80°C.

Data List No.15Gradually rises to 70− 80 ° C

A/T fluidtemperature sensor

15, 16 A/T fluidtemperature sensor

system5 Engine: idle

Selector leverposition: N

Brake pedal (re-test)(1) Depressed(2) Released

Data List No.26(1) ON(2) OFF

Stop lampswitch

26 Stop lampswitchsystem

A/Cswitch(1) ON(2) OFF

Data List No.65(1) ON(2) OFF

A/Ccompressor relay

− A/Ccompressorrelaysystem

Accelerator pedal(1) Fully closed(2) Depressed

Data List No.21(1) The engine

speed displayedon thetachometer isidentical to theengine speeddisplayed onMUT-II/III.

(2) Graduallyincreases from(1)

Crankanglesensor

21 Crankanglesensorsystem

Selector leverposition(1) N to D(2) N to R

No abnormal shockduring shiftingWithin 2 seconds oftime lag

Malfunction whenstarting off

− Enginestalls duringshifting

−N to Dshocks,large timelag

− N to Rshocks,large timelag

− N to D, N toR shocks,large timelag

Drivingnotpossible

− Does notmoveforward

− Does notreverse

− Does notmove(forward orreverse)



Diagnosiscode No.


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6 Selector leverposition: Sportmode (Must be

done on a leveland straightroad).

Selector leverposition and vehiclespeed (Each

condition should bemaintained for 10seconds or more).(1) Engine idling in

1st gear (vehiclestopped)

(2) Driving atconstant speed of10 km/h in 1stgear

(3) Driving atconstant speed of20 km/h in 2ndgear

(4) Driving atconstant speed of30 km/h in 3rdgear

(5) Driving atconstant speed of50 km/h in 4thgear

Data List No.63(2) 1st(3) 2nd

(4) 3rd(5) 4th

Shiftcondition

− −

Data List No.31(2) 0 %(3) 100 %(4) 100 %(5) 100 %

LRsolenoidvalve duty%

31 LR solevalvesystem

Data List No.32(2) 0 %(3) 0 %(4) 0 %(5) 100 %

UDsolenoidvalve duty%

32 UDsolenovalvesystem

Data List No.33(2) 100 %(3) 0 %(4) 100 %(5) 0 %

2NDsolenoid valveduty %

33 2NDsolenovalvesystem

Data List No.34(2) 100 %(3) 100 %(4) 0 %(5) 0 %

ODsolenoidvalve duty%

34 ODsolenovalvesystem

Data List No.29

(1) 0 km/h(4) 50 km/h

Vehicle

speedsignal

− −

Data List No.22(4) 1,800 − 2,100

r/min

Input shaftspeedsensor

22 Input sspeedsensorsystem

Data List No.23(4) 1,800 − 2,100

r/min

Outputshaftspeedsensor

23 Outputshaft spsensorsystem



Diagnosiscode No.


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7 Selector leverposition: Sportmode (Must be

done on a leveland straightroad).

Selector leverposition and vehiclespeed

(1) Driving atconstant speed60 km/h in 3rdgear

(2) Driving at 60km/h in 3rd gear,then fully closethe acceleratorpedal

Data List No.36(1) 70 − 99.6 %(2) 70 − 99.6 % to

0%

DCCsolenoidvalve duty

%

36, 52 DCCsolenoidvalve

systemData List No.52(1) − 10 − 10 r/min(2) The value

changes from (1)

DCCamount ofslippage

8 Suspends theINVECS-IIfunction using

MUT-II/IIISelector leverposition: D(Must be doneon a level andstraight road)

(1) Accelerate to 4thrange at a TPSoutput of 1.5 V

(opening angle20%).(2) Slowly

decelerate andstop.

(3) Accelerate to 4thrange at a TPSoutput of 2.5 V(opening angle50%).

Data List No.11, 23The shifting pointscorrespond with the

MUT-II/III displayand the TPS voltage(opening angle) andoutput shaft speed,which are describedin the standard shiftpattern.

Problemduringshifting

− Shocks,engineracing

Incorrectshiftpoints

− All points− Some

points

No shifting − Nodiagnosiscodes

22 Input shaftspeedsensorsystem

23 Output

shaft speedsensorsystem



Diagnosiscode No.


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8 Suspends theINVECS-IIfunction using

MUT-II/IIISelector leverposition: D(Must be doneon a level andstraight road)

(1) Accelerate from1st gear to 4thgear.

(2) Downshift to 3rdgear at speed of50 km/h in 4thgear.

(3) Downshift to 2ndgear at speed of30 km/h in 3rdgear.

(4) Downshift to 1stgear at speed of20 km/h in 2ndgear.

Data List No.63(1) 1st → 2nd → 3rd

→ 4th

(2) 4th→

3rd(3) 3rd → 2nd(4) 2nd → 1st

No shiftingfrom 1st to2nd, or no

shiftingfrom 2ndto 1st

31 LR solevalvesystem


41 1st withcompleof shif

42 2nd witcompleof shif

No shifting

from 2ndto 3rd, orno shiftingfrom 3rdto 2nd

33 2ND

solenovalvesystem

34 ODsolenovalvesystem

42 2nd witcompleof shif

43 3rd witcompleof shif

No shiftingfrom 3rdto 4th, orno shiftingfrom 4th to3rd

32 UDsolenovalvesystem


43 3rd witcomple

of shif44 4th wit

compleof shif



Diagnosiscode No.


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SHIFT PATTERNM1231028400169

UPSHIFT PATTERN

9 Selector leverposition: N(Must be done

on a level andstraight road)

Selector leverposition and vehiclespeed

(1) Select R anddrive at 10 km/h

The ration of data listNo.22 and No.23should be the same

as the transmissionratio when reversing

No shifting 22 Input shaftspeedsensor

system23 Output

shaft speedsensorsystem

46 Reversewithoutcompletionof shifting



Diagnosiscode No.


AC304186AC

100

50

0

4.66

4.00

3.00

0.411.00

2.00

1,000 2,000 3,000 4,000 5,000 6,000 7,000

100500 150

Throttleopeningvoltage (V)

Throttleopening (%)

1 2 2 3 3 4

2 3movementrange

3 4movementrange

Output shaft speed r/min

Vehicle speed km/h

Thick line: standard shift pattern

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DOWNSHIFT PATTERN

DAMPER CLUTCH CONTROLM1231021300053

3rd gear

AC304187

100

50

0 1,000 2,000 4,000 5,0003,000 6,000 7,000

100500 150

4.66

4.00

3.00

2.00

1.00

0.41


Throttleopening (%)


Vehicle speed km/h

1 2 2 3 3 4

2 3 3 4(Sport mode) (Sport mode)

1 2(Sport mode)

AC304188

4.66

4.00

3.00

2.00

1.00

0.41

100

50

0 1,000 2,000 3,000 4,000 5,000 6,000 7,000

100500 150


Vehicle speed km/h


Throttleopening (%)

Damper clutch disengaged

Damper clutch engaged

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4th gear

INSPECTION CHART FOR DIAGNOSISCODE

M1231007900318

AC304189 AB

4.66

4.00

3.00

2.00

1.00

0.41

100

50

0 1,000 2,000 3,000 4,000 5,000 6,000 7,000

100500 150


Vehicle speed km/h


Throttleopening (%)

Damper clutch disengaged Damper clutch engaged

A/Tdiagnosiscode No.

MPIdiagnosiscode No.

Diagnosis item Reference page

11 − Throttle position sensor (TPS) system Refer to GROUP13A ,Troubleshooting P.13A-52 .Refer to GROUP13B ,Troubleshooting P.13B-53 .

12

14

15 P0710 A/T fluid temperature sensor system P.23A-19

16 P.23A-25

21 − Crank angle sensor system Refer to GROUP13A ,Troubleshooting P.13A-149 .Refer to GROUP13B ,Troubleshooting P.13B-136 .

22 P0715 Input shaft speed sensor system P.23A-28

23 P0720 Output shaft speed sensor system P.23A-37

26 − Stop lamp switch system P.23A-46

27 P0705 Inhibitor switch system P.23A-50

28 P.23A-55

31 P0750 LR solenoid valve system P.23A-59

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32 P0755 UD solenoid valve system P.23A-63

33 P0760 2ND solenoid valve system P.23A-66

34 P0765 OD solenoid valve system P.23A-70

36 P0740 DCC solenoid valve system P.23A-7341 − 1st gear ratio does not meet the specification P.23A-77

42 − 2nd gear ratio does not meet the specification P.23A-77

43 − 3rd gear ratio does not meet the specification P.23A-77

44 − 4th gear ratio does not meet the specification P.23A-77

46 − Reverse gear ratio does not meet the specification P.23A-77

52 − DCC solenoid valve system P.23A-78

54 P1751 A/T control relay system P.23A-80

56 − N range lamp system P.23A-86

A/Tdiagnosiscode No.

MPIdiagnosiscode No.

Diagnosis item Reference page

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DIAGNOSTIC TROUBLE CODEPROCEDURES

Code No.15: A/T fluid temperature sensor system

OPERATION• The A/T fluid temperature sensor converts the

automatic fluid temperature to voltage, and sendthe information to the engine-A/T-ECU.

• The A/T fluid temperature rises, the resistancedecreases. Thus, the sensor output voltagedepends on the automatic fluid temperature. Asthe A/T fluid temperature rises, the output voltagewill decrease.

DIAGNOSIS CODE SET CONDITIONSIf the A/T fluid temperature sensor output voltage is4.5 volts or more after driving for 10 minutes or more,there is an open circuit in the A/T fluid temperaturesensor and diagnosis code 15 is set.

POSSIBLE CAUSES• Malfunction of the A/T fluid temperature sensor• Damaged harness wires and connectors• Malfunction of the engine-A/T-ECU

DIAGNOSIS

STEP 1. MUT-II/III data list• Item 15: A/T fluid temperature sensor (Refer to

Data List Table P.23A-116 ).

Q: Is the check result normal?YES : Intermittent malfunction (Refer to GROUP

00 − How to Cope with IntermittentMalfunction P.00-6 ).

NO : Go to Step 2.

ENGINE-A/T-ECU

A/T CONTROLSOLENOIDVALVE ASSEMBLY

A/TFLUIDTEMPERATURESENSOR

Wire colour codeB : Black LG : Light green G : Green L : Blue W : White Y : Yellow SB : Sky blueBR : Brown O : Orange GR : Gray R : Red P : Pink V : Violet

AC304933

A/T fluid temperature sensor system circuit

AB

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STEP 2. Measure the resistance at A/T controlsolenoid valve assembly connector B-19.

Disconnect the connector, and measure theresistance between terminal 1 and 2 at the sensorside.

OK:• 16.7 − 20.5 k Ω (at 0 ° C)• 7.3 − 8.9 k Ω (at 20 ° C)• 3.4 − 4.2 k Ω (at 40 ° C)• 1.9 − 2.2 k Ω (at 60 ° C)• 1.0 − 1.2 k Ω (at 80 ° C)• 0.57 − 0.69 k Ω (at 100 ° C)

Q: Is the check result normal?YES : Go to Step 3 .NO : Replace the A/T fluid temperature sensor.

STEP 3. Connector check: B-19 A/T controlsolenoid valve assembly

Check for the contact with terminals.

Q: Is the check result normal?YES : Go to Step 4.NO : Repair the defective connector.

STEP 4. Measure the resistance at A/T control

solenoid valve assembly connector B-19.

Disconnect the connector, and measure theresistance between terminal 2 and earth at the wiringharness side.

OK: 2 Ω or less

Q: Is the check result normal?YES : Go to Step 9.NO : Go to Step 5.

AC304815AB

Connector: B-19

Inhibitor switch

Sensor side

B-19 (GR)

AC304815AC

Connector: B-19

Harness side

Inhibitor switch

B-19 (GR)

AC304815AC

Connector: B-19

Harness side

Inhibitor switch

B-19 (GR)

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STEP 5. Measure the voltage at engine-A/T-ECUconnector C-124.(1) Connect A/T control solenoid valve assembly

connector B-19.(2) Turn the ignition switch to the ON position.

(3) Measure the voltage between engine-A/T-ECUconnector C-124 terminal No.57 and earth.

OK: 0.5 V or lessQ: Is the check result normal?

YES : Go to Step 8.NO : Go to Step 6.

STEP 6. Connector check: C-124 engine-A/T-ECUconnector







NO : Replace the engine-A/T-ECU.

AC304810 AB

Connector: C-124

Connector: C-124

Engine-A/T-ECU

Engine-A/T-ECU

5443 45

4842 44 46

47 49 5041

5360 61

5158 59

55 5756526562 666463

JAE

Harness side

C-124 (GR)

C-124 (GR)

AC304810 AC

Connector: C-124

Connector: C-124

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

544345

48424446

47495041

53

6061

51

5859

5557 56 52

65 6266 64 63

C-124 (GR)

C-124 (GR)


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STEP 9. Measure the voltage at A/T controlsolenoid valve assembly connector B-19.

(1) Disconnect the connector, and measure thevoltage between terminal 1 and earth at the

wiring harness side.(2) Turn the ignition switch to the ON position.

OK: 4.5 − 4.9 V





OK:• 3.8 - 4.0 V (at 20 ° C)• 3.2 - 3.4 V (at 40 ° C)• 1.7 - 1.9 V (at 80 ° C)

Q: Is the check result normal?YES : Go to Step 12 .NO : Go to Step 11.

AC304810 AC

Connector: C-124

Connector: C-124

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

544345

48424446

47495041

53

6061

51

5859

5557 56 52

65 6266 64 63

C-124 (GR)

C-124 (GR)

AC304815AD

Connector: B-19

Harness side

Inhibitor switch

B-19 (GR)

AC304810 AD

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102 103 104 106 107108 110

105117115116113109 114112111 119118

123 124 127122121120

125 126 129128 130

C-128 (GR)

C-128 (GR)

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STEP 11. Connector check: C-128engine-A/T-ECU connector






AC304810 AE

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

AC304810 AE

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

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STEP 13. Check the harness between A/T controlsolenoid valve assembly connector B-19 terminalNo.1 and engine-A/T-ECU connector C-128terminal No.124.

Check the output line for short-circuited or opencircuit.

Q: Is the check result normal?YES : Go to Step 7 .NO : Repair the wiring harness.


Check the earth line for open circuit.

Q: Is the check result normal?YES : Go to Step 7.NO : Repair the wiring harness.

AC304815 AC

Connector: B-19

Harness side

Inhibitor switch

B-19 (GR)

AC304810 AE

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

AC304815 AC

Connector: B-19

Harness side

Inhibitor switch

B-19 (GR)

AC304810 AC

Connector: C-124

Connector: C-124

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

544345

48424446

47495041

53

6061

51

5859

5557 56 52

65 6266 64 63

C-124 (GR)

C-124 (GR)

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Code No.16: A/T fluid temperature sensor system (short circuit)

A/T FLUID TEMPERATURE SENSOR SYSTEMCIRCUIT Refer to P.23A-19 .

OPERATION

Refer to P.23A-19 .DIAGNOSIS CODE SET CONDITIONIf the A/T fluid temperature sensor output voltage hasbeen approximately 0 V for at least one second(indicating abnormally high oil temperature), itindicates that the A/T fluid temperature sensor circuitis shorted and diagnosis code No.16 will be set.

POSSIBLE CAUSES• Malfunction of the A/T fluid temperature sensor• Damaged harness wires and connectors• Malfunction of the engine-A/T-ECU

DIAGNOSIS





NO : Go to Step 2.

STEP 2. Connector check: B-19 A/T controlsolenoid valve assembly



STEP 3. Measure the voltage at A/T controlsolenoid valve assembly connector B-19.

(1) Disconnect the connector, and measure thevoltage between terminal 1 and earth at thewiring harness side.

(2) Turn the ignition switch to the ON position.

OK: 4.5 − 4.9 VQ: Is the check result normal?



Disconnect the connector, and measure theresistance between terminal 1 and 2 at the sensorside.

OK:• 16.7 − 20.5 k Ω (at 0 ° C)• 7.3 − 8.9 k Ω (at 20 ° C)• 3.4 − 4.2 k Ω (at 40 ° C)• 1.9 − 2.2 k Ω (at 60 ° C)• 1.0 − 1.2 k Ω (at 80 ° C)• 0.57 − 0.69 k Ω (at 100 ° C)

Q: Is the check result normal?YES : Go to Step 5.NO : Replace the A/T fluid temperature sensor.

AC304815AC

Connector: B-19

Harness side

Inhibitor switch

B-19 (GR)

AC304815AC

Connector: B-19

Harness side

Inhibitor switch

B-19 (GR)

AC304815AB

Connector: B-19

Inhibitor switch

Sensor side

B-19 (GR)


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OK:• 3.8 - 4.0 V (at 20 ° C)• 3.2 - 3.4 V (at 40 ° C)• 1.7 - 1.9 V (at 80 ° C)

Q: Is the check result normal?




Q: Is the check result normal?YES : Go to Step 8.NO : Repair

AC304810 AD

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102 103 104 106 107108 110

105117115116113109 114112111 119118

123 124 127122121120

125 126 129128 130

C-128 (GR)

C-128 (GR)

AC304810 AE

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)


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Check the output line for short-circuited or opencircuit.


AC304815 AC

Connector: B-19

Harness side

Inhibitor switch

B-19 (GR)

AC304810 AE

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

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Code No.22: Input shaft speed sensor system

OPERATIONThe input shaft speed sensor detects the speed ofthe underdrive clutch retainer, and sends theinformation to the engine-A/T-ECU as a pulse signal.

DIAGNOSIS CODE SET CONDITIONSThe diagnosis code No.22 will be set if the input shaftspeed sensor does not send a pulse signal for onesecond or more while the 3rd or 4th gears areengaged and the vehicle speed is 40 km/h or more(the output shaft speed sensor speed is 1000 r/minor more).

If the code No.22 is set four times, the transmissionwill be fixed in 3rd gear as a fail-safe measure.However, the transmission can be downshifted to2nd gear by operating the selector lever.

POSSIBLE CAUSES• Malfunction of input shaft speed sensor• Malfunction of underdrive clutch retainer• Damaged harness wires and connectors• Malfunction of the engine-A/T-ECU

ENGINE-A/T-ECU

INPUT SHAFTSPEED SENSOR

IGNITION

SWITCH (IG1)


AC304934

Input shaft speed sendor system circuit

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DIAGNOSIS

STEP 1. MUT-II/III data list• Item 22: Input shaft speed sensor (Refer to data

list reference table P.23A-116 ).



NO : Go to Step 2.

STEP 2. Connector check: B-109 input shaftspeed sensor connector



STEP 3. Measure the resistance at input shaftspeed sensor connector B-109.


OK: 2 Ω or less

Q: Is the check result normal?YES : Go to Step 9.

NO : Go to Step 4.

STEP 4. Measure the voltage at engine-A/T-ECUconnector C-122.(1) Connect input shaft speed sensor connector

B-109.(2) Turn the ignition switch to the "ON" position.

AC304835

Connector: B-109

3 12

Harness side

Air cleaner bracket

AB

B-109 (B)

AC304835

Connector: B-109

3 12

Harness side

Air cleaner bracket

AB

B-109 (B)

AC304810 AF

Connector: C-122

Connector: C-122

Engine-A/T-ECU

Engine-A/T-ECU

Harness side

C-122 (GR)

C-122 (GR)


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Q: Is the check result normal?YES : Go to Step 6 .NO : Repair the defective connector.

STEP 6. MUT-II/III data list• Item 21: Input shaft speed sensor (Refer to data








AC304810 AH

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

AC304810 AK

Connector: C-122

Connector: C-122

Engine-A/T-ECU

Engine-A/T-ECU

Harness side

C-122 (GR)

C-122 (GR)

JAE


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STEP 8. Check the harness between input shaftspeed sensor connector B-109 terminal No.1 andengine-A/T-ECU connector C-122 terminal No.16.



STEP 9. Measure the voltage at input shaft speedsensor connector B-109.


(2) Turn the ignition switch to the "ON" position.OK: System voltage


YES : Go to Step 12.NO : Go to Step 10 .

AC304835

Connector: B-109

3 12

Harness side

Air cleaner bracket

AB

B-109 (B)

AC304810 AK

Connector: C-122

Connector: C-122

Engine-A/T-ECU

Engine-A/T-ECU

Harness side

C-122 (GR)

C-122 (GR)

JAE

AC304835

Connector: B-109

3 12

Harness side

Air cleaner bracket

AB

B-109 (B)

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STEP 10. Connectors check: C-209 J/Bconnector, C-136 or C-14 intermediate connector



STEP 11. Check the harness between input shaftspeed sensor connector B-109 terminal No.3 andjunction block connector C-209 terminal No.12.

Check the power supply line for short or open circuit.


AC303822

Junction block (front view)

Connector: C-209

AD

Harness side

1016

145

12134

11 72389

AC303808

Harness side


Connector: C-209

AD

1016

145

12134

11 72389

AC303818

Connector: C-136

AE

C-136(GR)

AC303800

Connector: C-14

AD

C-14(GR)

AC304835

Connector: B-109

3 12

Harness side

Air cleaner bracket

AB

B-109 (B)

AC303822


Connector: C-209

AD

Harness side

1016

145

12134

11 72389

AC303808

Harness side


Connector: C-209

AD

1016

145

12134

11 72389

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STEP 12. Measure the voltage at input shaftspeed sensor connector B-109.


(2) Turn the ignition switch to the ON position.OK: 4.5 − 4.9 V



STEP 13. Measure the voltage at engine-A/T-ECUconnector C-128.(1) Disconnect input shaft speed sensor connector

B-109.(2) Turn the ignition switch to the ON position.



YES : Go to Step 16.NO : Go to Step 14 .

AC304835

Connector: B-109

3 12

Harness side

Air cleaner bracket

AB

B-109 (B)

AC304810 AG

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102 103 104 106 107108 110

105117115116113109 114112111 119118

123 124 127122121120

125 126 129128 130

C-128 (GR)

C-128 (GR)

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STEP 15. Check the harness between input shaftspeed sensor connector B-109 terminal No.2 andengine-A/T-ECU connector C-128 terminalNo.103.

Check the output line for short circuit.


AC304810 AH

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

AC304835

Connector: B-109

3 12

Harness side

Air cleaner bracket

AB

B-109 (B)

AC304810 AH

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

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STEP 17. Check the harness between input shaftspeed sensor connector B-109 terminal No.2 andengine-A/T-ECU connector C-128 terminalNo.103.

Check the output line for open circuit.


AC304810 AH

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

AC304835

Connector: B-109

3 12

Harness side

Air cleaner bracket

AB

B-109 (B)

AC304810 AH

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

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STEP 18. Measure the output wave pattern of theinput shaft speed sensor at engine-A/T-ECUconnector C-128 (using an oscilloscope).(1) Shift the selector lever to the D range.(2) Accelerate the vehicle to approximately 50 km/h

(shift range; 3rd).

(3) Connect an oscilloscope, and measure the

voltage between engine-A/T-ECU connectorC-128 terminal No.103 and earth.OK: A wave pattern such as the oneshown on P.23A-121 (Check ProcedureUsing an Oscilloscope) should be output,and the maximum value should be 4.8 Vor more and the minimum value shouldbe 0.8 V or less. There should be no noisein the output wave pattern.





STEP 20. Replace the input shaft speed sensorand then recheck the diagnosis code.(1) Replace the input shaft speed sensor.(2) Test drive the vehicle.(3) Check if the diagnosis code is set.

Q: Is diagnosis code 22 set?YES : Go to Step 21 .NO : The inspection is complete.

STEP 21. Underdrive clutch retainer inspectionVisually check the underdrive clutch retainer for

damage.Q: Is the check result normal?

YES : Eliminate the cause of the noise.NO : Replace the underdrive clutch retainer.

AC304810 AG

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102 103104 106 107108 110

105117115116113109 114112111 119118

123 124 127122121120

125 126 129128 130

C-128 (GR)

C-128 (GR)

AC304810 AK

Connector: C-122

Connector: C-122

Engine-A/T-ECU

Engine-A/T-ECU

Harness side

C-122 (GR)

C-122 (GR)

JAE

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Code No.23: Output shaft speed sensor system

OPERATIONThe output shaft speed sensor detects the speed ofthe transfer drive gear, and sends the information tothe engine-A/T-ECU as a pulse signal.

DIAGNOSIS CODE SET CONDITIONSIf the output pulse from the output shaft speedsensor has been lost for one second or more whilethe vehicle is being driven, it is judged that there isan open circuit or short circuit in the output shaftspeed sensor, and diagnosis code 23 is set.

If the code No.23 is set four times, the transmissionwill be fixed in 3rd gear as a fail-safe measure.However, the transmission can be downshifted to2nd gear by operating the selector lever.

POSSIBLE CAUSES• Malfunction of output shaft speed sensor• Malfunction of transfer drive gear or driven gear• Damaged harness wires and connectors• Malfunction of the engine-A/T-ECU

ENGINE-A/T-ECU

OUTPUT SHAFTSPEED SENSOR

IGNITIONSWITCH (IG1)


AC304935

Output shaft speed sensor system circuit

AB

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DIAGNOSIS

STEP 1. MUT-II/III data list• Item 22: Output shaft speed sensor (Refer to data


Q: Is the check result normal?YES : . Intermittent malfunction (Refer to GROUP


NO : . Go to Step 2.

STEP 2. Connector check: B-108 output shaftspeed sensor connector


Q: Is the check result normal?YES :Go to Step 3.NO :Repair the defective connector.

STEP 3. Measure the resistance at output shaftspeed sensor connector B-108.


OK: 2 Ω or less

Q: Is the check result normal?YES : . Go to Step 9.NO : . Go to Step 4.

STEP 4. Measure the voltage at engine-A/T-ECUconnector C-122.(1) Connect output shaft speed sensor connector



OK: 0.5 V or less


AC304845

Connector: B-108

Harness side

B-108 (GR)

Air cleaner bracket

AB

3 2 1

AC304845

Connector: B-108

Harness side

B-108 (GR)

Air cleaner bracket

AB

3 2 1

AC304810 AF

Connector: C-122

Connector: C-122

Engine-A/T-ECU

Engine-A/T-ECU

Harness side

C-122 (GR)

C-122 (GR)


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Q: Is the check result normal?YES : . Go to Step 6.NO : . Repair the defective connector.

STEP 6. MUT-II/III data list• Item 22: Output shaft speed sensor (Refer to data








AC304810 AH

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

AC304810 AK

Connector: C-122

Connector: C-122

Engine-A/T-ECU

Engine-A/T-ECU

Harness side

C-122 (GR)

C-122 (GR)

JAE


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STEP 8. Check the harness between output shaftspeed sensor connector B-108 terminal No.1 andengine-A/T-ECU connector C-122 terminal No.16.



STEP 9. Measure the voltage at output shaftspeed sensor connector B-108.


(2) Turn the ignition switch to the ON position.OK: System voltage


YES : Go to Step 12 .NO : Go to Step 10.

AC304845

Connector: B-108

Harness side

B-108 (GR)

Air cleaner bracket

AB

3 2 1

AC304810 AK

Connector: C-122

Connector: C-122

Engine-A/T-ECU

Engine-A/T-ECU

Harness side

C-122 (GR)

C-122 (GR)

JAE

AC304845

Connector: B-108

Harness side

B-108 (GR)

Air cleaner bracket

AB

3 2 1

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STEP 10. Connectors check: C-209 J/Bconnector, C-136 or C-14 intermediate connector



STEP 11. Check the harness between outputshaft speed sensor connector B-108 terminalNo.3 and junction block connector C-209terminal No.12.



AC303822


Connector: C-209

AD

Harness side

1016

145

12134

11 72389

AC303808

Harness side


Connector: C-209

AD

1016

145

12134

11 72389

AC303818

Connector: C-136

AE

C-136(GR)

AC303800

Connector: C-14

AD

C-14(GR)

AC304845

Connector: B-108

Harness side

B-108 (GR)

Air cleaner bracket

AB

3 2 1

AC303822


Connector: C-209

AD

Harness side

1016

145

12134

11 72389

AC303808

Harness side


Connector: C-209

AD

1016

145

12134

11 72389

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STEP 12. Measure the voltage at output shaftspeed sensor connector B-108.


(2) Turn the ignition switch to the ON position.OK: 4.5 − 4.9 V



STEP 13. Measure the voltage at engine-A/T-ECUconnector C-128.(1) Disconnect output shaft speed sensor connector




YES : Go to Step 16 .NO : Go to Step 14.

AC304845

Connector: B-108

Harness side

B-108 (GR)

Air cleaner bracket

AB

3 2 1

AC304810 AG

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102 103104 106 107108 110

105117115116113109 114112111 119118

123 124 127122121120

125 126 129128 130

C-128 (GR)

C-128 (GR)

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STEP 15. Check the harness between outputshaft speed sensor connector B-108 terminalNo.2 and engine-A/T-ECU connector C-128terminal No.104.



AC304810 AH

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

AC304845

Connector: B-108

Harness side

B-108 (GR)

Air cleaner bracket

AB

3 2 1

AC304810 AH

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

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STEP 17. Check the harness between outputshaft speed sensor connector B-108 terminalNo.2 and engine-A/T-ECU connector C-128terminal No.104.



AC304810 AH

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

AC304845

Connector: B-108

Harness side

B-108 (GR)

Air cleaner bracket

AB

3 2 1

AC304810 AH

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

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STEP 18. Measure the output wave pattern of theoutput shaft speed sensor at engine-A/T-ECUconnector C-128 (using an oscilloscope).(1) Shift the selector lever to the D range.(2) Accelerate the vehicle to approximately 50 km/h

(shift range; 3rd).

(3) Connect an oscilloscope, and measure the

voltage between engine-A/T-ECU connectorC-128 terminal No.104 and earth.OK: A wave pattern such as the oneshown on P.23A-121 (Check ProcedureUsing an Oscilloscope) should be output,and the maximum value should be 4.8 Vor more and the minimum value shouldbe 0.8 V or less. There should be no noisein the output wave pattern.





STEP 20. Replace the output shaft speed sensorand then recheck the diagnosis code.(1) Replace the output shaft speed sensor.(2) Test drive the vehicle.(3) Check if the diagnosis code is set.

Q: Is diagnosis code 23 set?YES : Go to Step 21.NO : The inspection is complete.

STEP 21. Check the transfer drive gear anddriven gear

Visually check the transfer drive gear and drivengear for damage.

Q: Is the check result normal?YES : Eliminate the cause of the noise.NO : Replace the transfer drive gear and driven

gear.

AC304810 AG

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102 103104 106 107108 110

105117115116113109 114112111 119118

123 124 127122121120

125 126 129128 130

C-128 (GR)

C-128 (GR)

AC304810 AK

Connector: C-122

Connector: C-122

Engine-A/T-ECU

Engine-A/T-ECU

Harness side

C-122 (GR)

C-122 (GR)

JAE

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Code No.26: Stop lamp switch system

OPERATIONThe stop lamp switch judges whether the brakepedal is depressed or released, and sends theinformation to the engine-A/T-ECU.

DIAGNOSIS CODE SET CONDITIONS

If the stop lamp remains on for consecutively fiveminutes or more while the vehicle is being driven orall the stop lamp bulbs are blown, it is judged thatthere is a short or open circuit in the stop lamp switchand diagnosis code 26 is set.

POSSIBLE CAUSES• Malfunction of brake pedal• Malfunction of stop lamp switch

• Damaged harness wires and connectors• Malfunction of the engine-A/T-ECU

DIAGNOSIS

STEP 1. Check that the stop lamps illuminate andextinguish normally.The stop lamps should illuminate when the brakepedal is depressed, and extinguish when released.


Wire colour code

B : Black LG : Light greenG : Green L : BlueW : White Y : YellowSB : Sky blue BR : BrownO : Orange GR : GrayR : Red P : Pink V : Violet

BATTERY

RELAYBOX

STOP LAMPSWITCH

ENGINE-A/T-ECU

AC304937

Stop lamp switch system circuit

A

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STEP 2. Check the brake pedal height.Refer to GROUP 35A − On-vehicle Service, BrakePedal Check and Adjustment. (Refer to P.35A-4 ).

Q: Is the check result normal?YES : Go to Step 3.NO : Adjust the brake pedal height.

STEP 3. Check the stop lamp switch.Refer to GROUP 35A − Brake Pedal and Stop LampSwitch Continuity Check. (Refer to P.35A-13 ).

Q: Is the check result normal?YES : Go to Step 4.NO : Replace the stop lamp switch.

STEP 4. MUT-II/III data list• Item 26: Stop lamp switch (Refer to data list

reference table P.23A-116 ).



NO : Go to Step 5.

STEP 5. Connector check: C-05 stop lamp switchconnector



STEP 6. Measure the voltage at stop lamp switchconnector C-05.

Disconnect the connector, and measure the voltagebetween terminal No.2 and earth at the harness side.

OK: System voltage

Q: Is the check result normal?YES : Go to Step 7.NO : Go to Step 12 .

STEP 7. Measure the voltage at engine-A/T-ECUconnector C-128.(1) Connect stop lamp switch connector C-05.

(2) Measure the voltage between engine-A/T-ECU

AC304847

4 32 1

Connector: C-05

Harness side

Brake pedalAB

AC304847

4 32 1

Connector: C-05

Harness side

Brake pedalAB

AC304810 AG

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102 103 104 106 107

108 110

105

117115116113109 114112111 119118123 124 127122121

120125 126 129128 130

C-128 (GR)

C-128 (GR)

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connector C-128 terminal No.123 and earth.OK:

Brake pedal depressed: System voltageBrake pedal not depressed: 1 V or less




Q: Is the check result normal??YES : Go to Step 9 .NO : Repair the defective connector.

STEP 9. MUT-II/III data list• Item 26: Stop lamp switch (Refer to data list

reference table P.23A-116 ).




STEP 10. Connectors check: C-137 orC-13 intermediate connector, C-134 or C-12 J/C (6), C-128engine-A/T-ECU connector



AC304810 AH

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

AC303800

Connectors: C-12, C-13

AF18

3161514

1 2174 5 8

20196 7

21229 10

2513

24231211

C-12

C-13

C-12C-13

AC303818


AL

C-134

C-134

C-137

C-137

AC304810 AH

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)


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STEP 11. Check the harness between stop lampswitch connector C-05 terminal No.1 andengine-A/T-ECU connector C-128 terminalNo.123.

Check the output line for short or open circuit.


STEP 12. Connector check: C-115 or C-27 intermediate connector



STEP 13. Check the harness between stop lampswitch connector C-05 terminal No.2 and battery.



YES : Go to Step 9.NO : Repair the wiring harness.

AC304847

4 32 1

Connector: C-05

Harness side

Brake pedalAB

AC304810 AH

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

AC303816

Connector: C-115

AD

AC303798

Connector: C-27

AG

183

1615141 2

174 5 8

20196 7

21229 10

2513

24231211

AC304847

4 32 1

Connector: C-05

Harness side

Brake pedalAB

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Code No.27: Inhibitor switch system

OPERATIONThe inhibitor switch detects the selector leverposition (P, R, N or D) which the driver has selected,and sends the information to the engine-A/T-ECU.

DIAGNOSIS CODE SET CONDITIONSIf the inhibitor switch has not been sending anysignal for at least 30 seconds, an open circuit may bepresent and dianosis code No.27 will be set.


IGNITION

SWITCH (IG1)

INHIBITORSWITCH

ENGINE-A/T-ECU

SHIFTSWITCHASSENBLY SELECT

SWITCHSHIFTSWITCH

COMBINATIONMETER

AC304936

Inhibitor switch system circuit

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POSSIBLE CAUSES• Malfunction of the inhibitor switch• Damaged harness wires and connectors• Malfunction of the engine-A/T-ECU

DIAGNOSIS

STEP 1. MUT-II/III data list• Item 61: Inhibitor switch P.23A-116 (Refer to data

list reference table).

Q: Is the check result normal?YES : . Intermittent malfunction (Refer to GROUP


NO : Go to Step 2.NO : Go to Step 6.

STEP 2. Check the inhibitor switch.Refer to P.23A-127 .

Q: Is the check result normal?YES : Go to Step 3.NO : Replace the inhibitor switch.

STEP 3. Connector check: B-20 Inhibitor switchconnector, C-209 J/B connector, C-136 ,C-14 intermediate connector

AC304813 AC

Connector: B-20

Oil level gaugeHarness side

AC303808

Harness side


Connector: C-209

AD

1016

145

12134

11 72389

AC303822


Connector: C-209

AD

Harness side

1016

145

12134

11 72389

AC303818

Connector: C-136

AE

C-136(GR)


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STEP 4. Check the harness between inhibitorswitch connector B-20 terminal No.8 and J/Bconnector C-209 terminal No.12.

Check the power supply line for open circuit.



STEP 5. MUT-II/III data list• Item 61: Inhibitor switch P.23A-116 (Refer to d



YES : Intermittent malfunction (Refer to GROUP00 − How to Cope with IntermittentMalfunction P.00-6 ).




AC303800

Connector: C-14

AD

C-14

(GR)

AC304813 AC

Connector: B-20


AC303808

Harness side


Connector: C-209

AD

1016

145

12134

11 72389

AC303822


Connector: C-209

AD

Harness side

1016

145

12134

11 72389


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STEP 7. Connector check: B-20 inhibitor switchconnector, C-128 engine-A/T-ECU connector



STEP 8. Check the harness between inhibitorswitch connector B-20 terminal No.3, 7, 4, 1 andengine-A/T-ECU connector C-128 terminalNo.101, 108, 121, 102.



AC304813 AC

Connector: B-20


AC304810 AE

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

AC304813 AC

Connector: B-20


AC304810 AE

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

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STEP 9. Connector check: C-137 , C-13 intermediate connector, C-35 J/C (2), C-06combination meter connector



STEP 10. Check the harness between inhibitorswitch connector B-20 terminal No.3, 7, 4 andengine-A/T-ECU connector C-128 terminal No.47,46, 45.



AC303818

Connector: C-137

AF

AC303800

Connector: C-13

AC

183

1615141 2

174 5 8

20196 7

21229 10

2513

24231211

AC303814


AM

C-06 (L)

C-35 (L)

C-35

313536373839404145464748495051 3444 3343 3242

C-06 Harness side

AC303798

Connector: C-06, C-35

AM

C-06 (L)

C-06 Harness side

21 31312 14 21

1054 61615 17

7 8 91918 20

1122

C-35 (L)

C-35

313536373839404145464748495051 3444 3343 3242

AC304813 AC

Connector: B-20


AC304810 AE

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

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STEP 11. Connector check: D-27 shift switchassembly connector



STEP 12. Check the harness between inhibitorswitch connector B-20 terminal No.1 and shiftswitch assembly connector D-27 terminal No.3.



Code No.28: Inhibitor switch systemINHIBITOR SWITCH SYSTEM CIRCUIT Refer to P.23A-50 .

OPERATION Refer to P.23A-50 .

DIAGNOSIS CODE SET CONDITIONSIf the inhibitor switch has been sending multiplesignals for at least 30 seconds, the circuit may beopen and diagnosis code No.28 will be set.

POSSIBLE CAUSES• Malfunction of the inhibitor switch

• Damaged harness wires and connectors• Malfunction of the engine-A/T-ECU

DIAGNOSIS



AC304865 AB

Connector: D-27

Harness side

AC304813 AC

Connector: B-20


AC304865 AB

Connector: D-27

Harness side

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STEP 2. Connector check: B-20 Inhibitor switchconnector, C-128 engine-A/T-ECU connector



STEP 3. Check the harness between inhibitorswitch connector B-20 terminal No.3, 7, 4, 1 andengine-A/T-ECU connector C-128 terminalNo.101, 108, 121, 102.



AC304813 AC

Connector: B-20


AC304810 AE

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

AC304813 AC

Connector: B-20


AC304810 AE

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

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STEP 4. Connector check: C-137 , C-13 intermediate connector, C-35 J/C (2), C-06combination meter connector



STEP 5. Check the harness between inhibitorswitch connector B-20 terminal No.3, 7, 4 andengine-A/T-ECU connector C-128 terminal No.47,46, 45.



AC303818

Connector: C-137

AF

AC303800

Connector: C-13

AC

183

1615141 2

174 5 8

20196 7

21229 10

2513

24231211

AC303814


AM

C-06 (L)

C-35 (L)

C-35

313536373839404145464748495051 3444 3343 3242

C-06 Harness side

AC303798

Connector: C-06, C-35

AM

C-06 (L)

C-06 Harness side

21 31312 14 21

1054 61615 17

7 8 91918 20

1122

C-35 (L)

C-35

313536373839404145464748495051 3444 3343 3242

AC304813 AC

Connector: B-20


AC304810 AE

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

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STEP 6. Connector check: D-27 shift switchassembly connector



STEP 7. Check the harness between inhibitorswitch connector B-20 terminal No.1 and shiftswitch assembly connector D-27 terminal No.3.



STEP 8. MUT-II/III data list• Item 61: Inhibitor switch P.23A-116 (Refer to d





AC304865 AB

Connector: D-27

Harness side

AC304813 AC

Connector: B-20


AC304865 AB

Connector: D-27

Harness side


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Code No.31: Low-reverse solenoid valve system

OPERATION• Solenoid valve closes or opens according to the

signals from the engine-A/T-ECU.

• The engine-A/T-ECU energizes or deenergizessolenoid valve, based on input signals such asthrottle position sensor opening angle, inhibitorswitch, etc.

BATTERY

RELAYBOX

A/TCONTROLRELAY

A/T CONTROLSOLENOIDVALVE ASSEMBLY

ENGINE-A/T-ECU

UNDERDRIVESOLENOID

VALVE

SECONDSOLENOID

VALVE

OVERDRIVESOLENOIDVALVE

TORQUECONVERTER

CLUTCHCONTROLSOLENOIDVALVE

LOW ANDREVERSE

SOLENOIDVALVE


AC304938 AB

Solenoid valve system circuit

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DIAGNOSIS CODE SET CONDITIONSIf the drive terminal voltage of the low-reversesolenoid valve is 3.0 V or less, it is judged that thereis a short circuit or open circuit in the low-reversesolenoid valve, and diagnosis code 31 is set.If diagnosis code 31 is set 4 times, the transmissionis fixed in 3rd as a fail-safe measure.

POSSIBLE CAUSES• Malfunction of low-reverse solenoid valve• Damaged harness wires and connectors• Malfunction of the engine-A/T-ECU

DIAGNOSIS

STEP 1. Read diagnosis code by using theMUT-II/III.

Q: Are diagnosis code 36 set?YES : Go to Step 9 .

NO : Go to Step 2.

STEP 2. MUT-II/III actuator test• Item 01: Low-reverse solenoid valve

OK: Operating sound can be heard.



NO : Go to Step 3.

STEP 3. Connector check: B-19 A/T controlsolenoid valve assembly connector




Disconnect the connector, and measure theresistance between terminal No.6 and No.10 at thesolenoid valve side.

OK: 2.7 − 3.4 Ω (A/T fluid temperature 20

Q: Is the check result normal?YES : Go to Step 5.

NO : Check the low-reverse solenoid valve (Referto P.23A-130 ).



AC304815 AC

Connector: B-19

Harness side

Inhibitor switch

B-19 (GR)

AC304815AB

Connector: B-19

Inhibitor switch

Sensor side

B-19 (GR)

AC304810 AD

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102 103 104 106 107108 110

105117115116113109 114112111 119118

123 124 127122121120

125 126 129128 130

C-128 (GR)

C-128 (GR)


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OK: System voltage






Check the output line for short or open circuit.


STEP 8. MUT-II/III actuator test• Item 01: Low-reverse solenoid valve

OK: Operating sound can be heard.




AC304810 AE

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)

AC304815 AC

Connector: B-19

Harness side

Inhibitor switch

B-19 (GR)

AC304810 AE

Connector: C-128

Connector: C-128

Engine-A/T-ECU

Engine-A/T-ECU

JAE

Harness side

101102103104106107108110

105117 115116 113 109114 112 111119 118

123124127 122 121120

125126129 128130

C-128 (GR)

C-128 (GR)


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STEP 9. Connector check: B-19 A/T controlsolenoid valve assembly connector



STEP 10. Measure the resistance at A/T control

solenoid valve assembly connector B-19.

Disconnect the connector, and measure theresistance between terminal No.6 and No.10 at thesolenoid valve side.

OK: 2.7 − 3.4 Ω (A/T fluid temperature 20 ° C)

Q: Is the check result normal?YES : Go to Step 11.NO : Check the solenoid valve harness.

STEP 11. Connector check: B-15X A/T controlrelay connector



STEP 12. Check the harness between A/T control

solenoid valve assembly connector B-19 terminalNo.10 and A/T control relay connector B-15Xterminal No.4.

Check the power supply line for short or open circuit.Q: Is the check result normal?


AC304815AC

Connector: B-19

Harness side

Inhibitor switch

B-19 (GR)

AC304815 AB

Connector: B-19

Inhibitor switch

Sensor side

B-19 (GR)

AC304791 AB

Connector: B-15X Front ofvehicle

Relay boxside

AC304815 AC

Connector: B-19

Harness side

Inhibitor switch

B-19 (GR)

AC304791 AB

Connector: B-15X Front ofvehicle

Relay boxside

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Code No.32: Underdrive solenoid valve system

SOLENOID VALVE SYSTEM CIRCUIT Refer to P.23A-59 .

OPERATION• Solenoid valve closes or opens according to the

signals from the engine-A/T-ECU.• The engine-A/T-ECU energizes or deenergizessolenoid valve, based on input signals such asthrottle position sensor opening angle, inhi

Documents

GR00005100-23A.pdf