2000 MITSUBISHI MONTERO 4WD

22-1
MANUAL
TRANSMISSION
CONTENTS
GENERAL INFORMATION 2..................
LUBRICANTS 2..............................
SEALANTS 2................................
SPECIAL TOOL 2............................
TROUBLESHOOTING 3.............
ON-VEHICLE SERVICE 6.....................
Transmission Oil Check 6.......................
Oil Replacement 6.............................4WD Detection Switch Continuity Check
7...................................
High/Low Detection Switch Continuity Check
7...................................
TRANSMISSION CONTROL 8.......
TRANSMISSION CONTROL 9.......
TRANSMISSION ASSEMBLY 10..............
4WD INDICATOR-ECU/TRANSFER-ECU 17....


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MANUAL TRANSMISSION -4WD Indicator-ECU/Transfer-ECU22-18
Terminal No.Inspection itemInspection condition
1: Ignition switchInspection condition
2: Transfer lever positionTerminal voltage
1Free wheel engageON2HSystem voltage
switch
4H*10V
24WD detectionON2HSystem voltage
switch
4H, 4L0V
3Ignition switch (IG1)OFF-0V
ON-System voltage
6HI/LOW detection
switchONShifting from 4H to 4L
or vice versaSystem voltage
2H, 4H, 4L0V
7Free wheel clutchON4H, 4L0V
changeover solenoid
valve
2H*2System voltage
104WD Indicator lampON2H0V
4H, 4LSystem voltage
NOTE
*1:When vehicle has been moved once.
*2:Shift the lever from 4H to 2H, and then turn the ignition switch to OFF and then back to ON.
TRANSFER-ECU
Measure the terminal voltage (Refer to P.22-3).


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AUTOMATIC TRANSMISSION -Troublehshooting II>23-75
Code No. 22, 23 Front propeller shaft speed sensor
systemProbable cause
Code No. 22 is output to indicate anopencircuit or short-circuit in the front
propeller shaft speed sensor if no signal is input from the front propeller shaft
speed sensor when shifting from 2WD to 4WD while driving atmedium to low
speeds.
Code No. 23 is output to indicate anopencircuit or short-circuit in the front
propeller shaft speed sensor if the signal input from the front propeller shaft
speed sensor is unstable when the freewheelengageswitch is on.DMalfunction of front propeller shaft speed sensor
DMalfunction of harness or connector
DMalfunction of transfer-ECU
Transient malfunction (Refer to GROUP 00 - Points to Note
for Transient Malfunctions.)
OK NG
OK
OK
To the nextpage
NG
OK
NG
NG
Repair
Replace the transfer-ECU.
OKMUT-
IIData List
DNo. 2 Front propeller shaft speed sensor
OK:Refer to P.23-87 (Data List Chart).
OK
OK
NG
OK
Measure at transfer-ECU connector E-105
DMeasure at ECU terminals.
DIgnition switch: ON
DVoltage between terminals 18 and earth
OK:0.5 V or less
NG
Repair
Replace the transfer-ECU.
NG
Check the trouble symptoms.
Check the trouble symptoms.
Replace the transfer-ECU.
OK
OK
Measure at transfer-ECU connector E-105
DMeasure at ECU terminals.
DDisconnect front propeller shaft speed sensor connector
C-17.
DIgnition switch: ON
DVoltage between terminals 7 and earth
OK:4.8 - 5.2 V
Measure the front propeller shaft speed sensor output wave
pattern at transfer-ECU connector E-105 (using an
oscilloscope).
DVehicle speed: approx. 50 km/h
DShift range: 3rd
DVoltage between terminals 7 - 18
OK:A wave pattern such as the one shown on P.23-69
(Check Procedure Using an Oscilloscope tern B>) should be output, and the maximum value
should be 4.8 V or more and the minimumvalue
should be 0.8 V or less.
There should be no noise in the output wave pattern.
NG
RepairCheck the following connectors:C-17, E-105NG
NG
Repair
Check the following connector:E-105Repair
NG
Check the harness between the front propeller shaft speed
sensor and the transfer-ECU.
Check the following connector:C-17
Check the trouble symptoms.
Check the following connector:E-105


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AUTOMATIC TRANSMISSION -Troublehshooting II>23-82
Code No. 34 Freewheel engage solenoid valve systemProbable cause
Code No. 34 is output to indicate anopencircuit or short-circuit in the freewheel
engage solenoidvalve when the transfer-ECU terminal voltages are not the
same while current isbeing supplied to the freewheel engage solenoidvalve.DMalfunction of freewheel engage solenoidvalve
DMalfunction of harness or connector
DMalfunction of transfer-ECU
NG
NG
MUT-
IIActuator Test
DNo. 1 Freewheel engage solenoidvalve
OK:The solenoid valve operates for 5 seconds.Transient malfunction (Refer to GROUP 00 - Points to Note
for Transient Malfunctions.) OK
OK OK OKNG
DCheck the harness between the freewheelengage solenoid
valve and the transfer-ECU, and repair if necessary.
DCheck the harness between the freewheelengage solenoid
valve and the ignition switch, and repair if necessary.Repair
Check the harness between the freewheelengage solenoid
valve and the ignition switch, and repair if necessary.
OK OK
OK
NG
Check the trouble symptoms.Replace the transfer-ECU.
Measure at transfer-ECU connector E-108
DMeasure at ECU terminals.
DTransfer: 4WD
DIgnition switch: ON
DVoltage between terminals 41 and earth
OK:System voltage
Measure at freewheel engage solenoidvalve connectors A-40
and A-41.
DDisconnect the connector and measure at the harness
side.
DIgnition switch: ON
DVoltage between terminal 1 and earth
OK:System voltageNG
Replace
NG
Repair
Freewheel engage solenoidvalve check
(Refer to GROUP 26 - On-Vehicle Service.)
Check the following connectors:A-40, A-41
Repair NG
Check the following connector:E-108
NG
Repair
OK
Check the following connectors: D-208,
D-210, D-27, A-15, A-16, A-04, E-113, E-108,
D-208, D-210, D-27, A-15, A-16, D-143, E-113, E-108,
Check the following connectors:D-208, D-210, D-27, A-15


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AUTOMATIC TRANSMISSION -Troubleshooting II>23-87
DATA LIST REFERENCE TABLE
Item
No.Check itemInspection conditionsNormal condition
1Accelerator pedalEngine: StoppedAccelerator pedal: Fully closed985 - 1,085 mV
position sensor
(APS)Selector lever position:
PAccelerator pedal: DepressedGradually increases from
the above value.
Accelerator pedal: Fully open4000 mV or higher
2Front propeller shaft
speed sensorTransfer position: 4WDDriving at a constant speed of
30 km/h30 km/h
3Rear propeller shaftTransfer position: 4WDDriving at a constant speed of30 km/h3Rear propeller shaft
speed sensorTransfer position: 4WDDriving at a constant speed of
30 km/h30 km/h
4Difference between
front and rear pro-
peller shaft speedsTransfer position: 4WDDriving at a constant speed of
30 km/hWithin 5 km/h
5Vehicle speedIdling in 1st (Vehicle stopped)0 km/h
Driving at a constant speed of 50 km/h in 3rd50 km/h
6Transfer lever posi-Ignition switch: ONTransfer shift lever position: 2H2H
tionEngine: StoppedTransfer shift lever position: 4H4H
Transfer shift lever position:
4HLc4HLc
Transfer shift lever position:
4LLc4LLc
7Transfer positionDriving at a constant
speed of 10 km/hTransfer shift lever position:
2H®4H2H - 4H®4H
Transfer shift lever position:
4H®4HLc4H - 4HL®4HL
Engine: Stopped
Selector lever position:Transfer shift lever position:
4HLc®4LLc4HL - 4LL®4LL
NTransfer shift lever position:
4LLc®4HLc4HL - 4LL®4HL
Driving at a constant
speed of 10 km/hTransfer shift lever position:
4HLc®4H4H - 4HL®4H
Transfer shift lever position:
4H®2H2H - 4H®2H
8Main relay voltageIgnition switch: ONSystem voltage (V)
9Ignition voltageIgnition switch: ONSystem voltage (V)
10Shift actuator cur-
rentDuring transfer selection (while motor is running)0A®0.2 A®0A
11Target currentDuring transfer selection (while motor is running)0A®1.5 A®0A
12Shift actuator volt-
ageIgnition switch: ON
Selector lever position: N
Transfer shift lever position: 2H®4H (or 4H®4HLc,
4HLc®4LLc)System voltage (V)
Ignition switch: ON
Selector lever position: N
Transfer shift lever position: 4LLc®4HLc (or 4HLc®4H,
4H®2H)System voltage (V)


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AUTOMATIC TRANSMISSION -Troubleshooting II>23-88
Item
No.Normal condition Inspection conditions Check item
21Ignition switchIgnition switch: ONON
Ignition switch: OFFOFF
22Transmission identi-
ficationVehicles with A/TA/T
23Stop lamp switchIgnition switch: ONBrake pedal: DepressedON
Engine: StoppedBrake pedal: ReleasedOFF
24Transfer leverTransfer shift lever position: 2HON
switch 2HTransfer shift lever position: Other than the aboveOFF
25Transfer leverTransfer shift lever position: 4HON
switch 4HTransfer shift lever position: Other than the aboveOFF
26Transfer leverTransfer shift lever position: 4HLcON
switch 4HLcTransfer shift lever position: Other than the aboveOFF
27Transfer leverTransfer shift lever position: 4LLcON
switch 4LLcTransfer shift lever position: Other than the aboveOFF
28Engine identificationPetrol vehiclesPETROL
Diesel vehiclesDIESEL
30Freewheel engageDuring 2WDON
solenoid valveDuring 4WDOFF
31Inhibitor switch NSelector lever position: NON
Selector lever position: Other than the aboveOFF
32Inhibitor switch PSelector lever position: PON
Selector lever position: Other than the aboveOFF
332WD switchDriving conditions: 2WD (2H)ON
Driving conditions: Other than the aboveOFF
342WD/4WD switchDriving conditions: 2WD (2H), 4WD (4H)ON
Driving conditions: Other than the aboveOFF
354H switchDriving conditions: 4WD (4H), 4WD (4HLc)ON
Driving conditions: Other than the aboveOFF
36Center differentialDriving conditions: 4WD (4HLc), 4WD (4LLc)ON
lock switchDriving conditions: Other than the aboveOFF
374LLc switchDriving conditions: 4WD (4LLc)ON
Driving conditions: Other than the aboveOFF
38Freewheel engageDuring 2WDOFF
switchDuring 4WDON


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AUTOMATIC TRANSMISSION -Troubleshooting II>23-90
Ter-
minal
No.Check itemInspection conditionsStandard value
1Shift actuatorTransfer shift lever position: 2H®4H5.6 V®11.0 V®
5.6 V
3Shift actuatorTransfer shift lever position: 4H®2H5.6 V®11.0 V®
5.6 V
5Accelerator pedal positionAccelerator pedal: Fully closed (engine stopped)0.985 - 1.085 V
sensor (APS)Accelerator pedal: Fully open (engine stopped)4.0 V or higher
7Front propeller shaft speed
sensorMeasure the voltage between terminals 7 and 18 using
an oscilloscope.
Engine: 2 000 r/min
Shift range: 4thOscilloscope check
procedure (Refer to
P. 23-69 Pattern B>.)
9Rear propeller shaft speed
sensorMeasure the voltage between terminals 9 and 18 using
an oscilloscope.
Engine: 2 000 r/min
Shift range: 4thOscilloscope check
procedure (Refer to
P. 23-69 Pattern B>.)
11Diagnosis outputWhen normal (no diagnosis codes are output)0 V and 5 V alterna-
tes
13Power supplyIgnition switch: OFF0V
Ignition switch: ONSystem voltage
18Sensor earthAt all times0.5 V or less
20Transfer lever switch 2HTransfer shift lever position: 2HSystem voltage
Transfer shift lever position: Other than the above0V
21Transfer lever switch 4HTransfer shift lever position: 4HSystem voltage
Transfer shift lever position: Other than the above0V
22Transfer lever switch 4HLcTransfer shift lever position: 4HLcSystem voltage
Transfer shift lever position: Other than the above0V
23Transfer lever switch 4LLcTransfer shift lever position: 4LLcSystem voltage
Transfer shift lever position: Other than the above0V
24Diagnosis control––
25EarthAt all times0V
26EarthAt all times0V
31Backup power supplyAt all timesSystem voltage
32Inhibitor switch NSelector lever position: NSystem voltage
Selector lever position: Other than the above0V
33Inhibitor switch PSelector lever position: PSystem voltage
Selector lever position: Other than the above0V
34Stop lamp switchBrake pedal: DepressedSystem voltage
Brake pedal: Released0V
35EarthAt all times0V
37Rear wheel indicator lampOther than during transfer selectionSystem voltage
38Front wheel indicator lampDuring 4WDSystem voltage
39Earth <6G7>At all times0V


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AUTOMATIC TRANSMISSION -Troubleshooting II>23-91
Ter-
minal
No.Standard value Inspection conditions Check item
40Center differential lock
lampDuring 4WD (4HLc or 4LLc)System voltage
41Solenoid valve A, BTransfer shift lever position: 2H1V
Transfer shift lever position: Other than 2HSystem voltage
42EarthAt all times0V
432WD switchTransfer shift lever position: 2H0V
Transfer shift lever position: Other than 2H10.5 V
442WD/4WD switchTransfer shift lever position: 2H or 4H0V
Transfer shift lever position: 4HLc or 4LLc10.5 V
454H switchTransfer shift lever position: 4H or 4HLc0V
Transfer shift lever position: 2H or 4LLc10.5 V
46Center differential lockTransfer shift lever position: 4HLc or 4LLc0V
switchTransfer shift lever position: 2H or 4H10.5 V
474HLc switchTransfer shift lever position: 4LLc0V
Transfer shift lever position: Other than 4LLc10.5 V
50Freewheel engage switchTransfer position: 2WD10.5 V
Transfer position: 4WD0V


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