2000 MITSUBISHI MONTERO transmission speed sensor

AUTOMATIC TRANSMISSION -Troublehshooting II>23-77
Code No. 24, 25 Rear propeller shaft speed sensor systemProbable cause
Code No. 24 is output to indicate anopencircuit or short-circuit in the rear
propeller shaft speed sensor if the signal input from the rear propeller shaft
speed sensor is unstable when the APS voltage is 1.5 V or higher.
Code No. 25 is output to indicate anopencircuit or short-circuit in the rear
propeller shaft speed sensor if the signal input from the rear propeller shaft
speed sensor is unstable when the freewheelengageswitch is on.DNo. 3 Rear 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
Check the following connector:E-105
OK
OK
To the nextpage
NG
OK
NG
NG
Repair
Check the following connector:C-08
Replace the transfer-ECU.
OKMUT-
IIData List
DNo. 3 Rear propeller shaft speed sensor
OK:Refer to P.23-87 (Data List Chart).
OK
OK
NG
Check the trouble symptoms.
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 rear propeller shaft speed sensor connector
C-08.
DIgnition switch: ON
DVoltage between terminals 9 and earth
OK:4.8 - 5.2 V
Measure the rear 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 9 - 18
OK:A wave pattern such as the one shown on P.23-69
(Check Procedure Using an Oscilloscope) 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-08, E-108NG
NG
Repair
Check the following connector:E-108Repair
NG
Check the harness between the rear propeller shaft speed
sensor and the transfer-ECU.


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AUTOMATIC TRANSMISSION -Troublehshooting II>23-78
(2)NG
(3)NG
From the previouspage
(1)NG
OK
NG
Measure at rear propeller shaft speed sensor connector C-08.
DDisconnect the connector and measure at the harness
side.
(1) Resistance between terminal 1 and earth
OK:2
Wor less
(2) Voltage between terminal 2 and earth
(Ignition switch: ON)
OK:4.8 - 5.2 V
(3) Voltage between terminal 3 and earth
(Ignition switch: ON)
OK:System voltage
Check the harness between the rear propeller shaft speed
sensor and the ignition switch, and repair if necessary.
Check the following connectors:D-208, D-213, D-32, E-115
NG
Check the trouble symptoms.
Check the harness between the rear propeller shaft speed
sensor and the transfer-ECU, and repair if necessary. (Earth
line)
Replace the rear propeller shaft speed sensorOK
OK
Repair
Check the harness between the rear propeller shaft speed
sensor and the transfer-ECU, and repair if necessary. (Sensor
line)
Eliminate the cause of the noise.
NG
Check the trouble symptoms.
NG
Repair
OK
NG
Repair
OK
DCheck the harness between the rear propeller shaft speed
sensor and the transfer-ECU.
DCheck the harness between the rear propeller shaft speed
sensor and the ignition switch.
Check the following connectors:D-208, D-213, D-32, E-115,
E-105


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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>23-90
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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