Mitsubishi Pajero Pinin. Manual — part 180
AUTOMATIC TRANSMISSION –
Troubleshooting <A/T>
23-30
A/T-ECU TERMINAL VOLTAGE REFERENCE CHART
Terminal
No.
Inspection item
Inspection conditions
Standard value
1
Solenoid valve No. 1
When in 1st or 2nd gear
System voltage
When in 3rd or 4th gear
0 V
2
Solenoid valve No. 2
When in 2nd or 3rd gear
System voltage
When in 1st or 4th gear
0 V
3
Wide open throttle switch
Accelerator pedal: Released
4.5 – 5.5 V
Accelerator pedal: Depressed
Less than 0.4 V
4
Output shaft speed sensor
earth
–
–
5
Stop lamp switch
Brake pedal: Depressed
System voltage
Brake pedal: Released
0 V
6
Free-wheeling engage
switch
Transfer lever position: Other than 4WD
System voltage
switch
Transfer lever position: 4WD
0 V
8
Inhibitor switch (L)
Selector lever position: L
System voltage
Selector lever position: Other than L
0 V
9
Back-up power supply
Ignition switch: OFF
System voltage
10
Solenoid valve No. 3
When lockup clutch is operating
System voltage
When lockup clutch is not operating
0 V
11
Diagnosis control terminal
–
–
12
A/T fluid temperature
sensor earth
–
–
13
Output shaft speed sensor
Vehicle: Stopped
Approx. 2.5 V
Vehicle: Driving
Other than 2.5 V
14
Dual-pressure switch
A/C switch: OFF
0 V
A/C switch: ON
System voltage
15
Input shaft speed sensor
earth
–
–
16
Input shaft speed sensor
Ignition switch: OFF
0 V
Ignition switch: ON
2.5 V
AUTOMATIC TRANSMISSION –
Troubleshooting <A/T>
23-31
Terminal
No.
Standard value
Inspection conditions
Inspection item
19
Communication with input
signals from engine-ECU
Engine: Idling
Selector lever position: D
Other than 0 V
21
Communication with output
signals to engine-ECU
Engine: Idling
Selector lever position: D
Other than 0 V
23
Inhibitor switch (2)
Selector lever position: 2
System voltage
Selector lever position: Other than 2
0 V
24
Power supply
Ignition switch: OFF
0 V
Ignition switch: ON
System voltage
25
Earth
Engine: Idling
0 V
27
Vehicle speed sensor
Vehicle: Slowly moving forward
Alternates between
0
↔
Approx. 5 V
28
A/T fluid temperature
sensor
ATF temperature: 120
_
C
Approx. 0.3 V
sensor
ATF temperature: 150
_
C
Approx. 0.15 V
29
Overdrive switch
Overdrive switch: ON
System voltage
Overdrive switch: OFF
0 V
30
Accelerator pedal position
sensor (throttle opening
Accelerator pedal: Released
Approx. 1 V
sensor (throttle opening
voltage)
Accelerator pedal: Fully depressed
Approx. 4 V
31
Accelerator pedal position
sensor (power supply
Ignition switch: ON
Approx. 5 V
sensor (power supply
voltage)
Ignition switch: OFF
0 V
32
Diagnostic output terminal
–
–
33
N range lamp
Ignition switch: ON
System voltage
Ignition switch: OFF
0 V
34
Inhibitor switch (N)
Selector lever position: N
System voltage
Selector lever position: Other than N
0 V
AUTOMATIC TRANSMISSION –
Troubleshooting <A/T Key Interlock and Shift
Lock Mechanisms>
23-32
TROUBLESHOOTING <A/T KEY INTERLOCK AND SHIFT LOCK
MECHANISMS>
INSPECTION CHART FOR TROUBLE SYMPTOMS
Problem
Inspection
Procedure No.
Reference page
Selector lever can be moved from P to R without depressing brake pedal
when ignition key is at positions other than LOCK (OFF).
1
23-32
Selector lever cannot be moved from P to R with brake pedal depressed
when ignition key is at positions other than LOCK (OFF).
2
23-32
Selector lever can be moved from P to R with brake pedal depressed when
ignition key is at LOCK (OFF) position.
3
23-33
Selector lever cannot be moved from P to R smoothly.
4
23-33
Selector lever cannot be moved from R to P.
5
23-33
Ignition key cannot be turned to LOCK (OFF) position when selector lever
is at P position.
6
23-33
Ignition key can be turned to LOCK (OFF) position when selector lever is at
positions other than P.
7
23-33
INSPECTION CHART FOR TROUBLE SYMPTOMS
INSPECTION PROCEDURE 1
Selector lever can be moved from P to R without
depressing brake pedal when ignition key is at positions
other than LOCK (OFF).
Probable cause
Lock cam or shift lock cable may be defective.
D
Malfunction of lock cam
D
Malfunction of shift lock cable
Check items described in the column “Probable cause”.
INSPECTION PROCEDURE 2
Selector lever cannot be moved from P to R with brake
pedal depressed when ignition key is at positions other
than LOCK (OFF).
Probable cause
Selector lever assembly, shift lock cable, key interlock cable, transmission control
cable or lock cam may be defective.
D
Malfunction of selector lever assembly
D
Malfunction of shift lock cable
D
Malfunction of key interlock cable
D
Malfunction of transmission control cable
D
Malfunction of lock cam
Check items described in the column “Probable cause”.
AUTOMATIC TRANSMISSION –
Troubleshooting <A/T Key Interlock and Shift
Lock Mechanisms>
23-33
INSPECTION PROCEDURE 3
Selector lever can be moved from P to R with brake pedal
depressed when ignition key is at LOCK (OFF) position.
Probable cause
Lock cam or key interlock cable may be defective.
D
Malfunction of lock cam
D
Malfunction of key interlock cable
Check items described in the column “Probable cause”.
INSPECTION PROCEDURE 4
Selector lever cannot be moved from P to R smoothly.
Probable cause
Key interlock cable, shift lock cable, lock cam, or selector lever assembly may be
defective.
D
Malfunction of key interlock cable
D
Malfunction of shift lock cable
D
Malfunction of lock cam
D
Malfunction of selector lever assembly
Check items described in the column “Probable cause”.
INSPECTION PROCEDURE 5
Selector lever cannot be moved from R to P.
Probable cause
Selector lever assembly or transmission control cable may be defective.
D
Malfunction of selector lever assembly
D
Malfunction of transmission control cable
Check items described in the column “Probable cause”.
INSPECTION PROCEDURE 6
Ignition key cannot be turned to LOCK (OFF) position
when selector lever is at P position.
Probable cause
Lock cam, key interlock cable or key cylinder slider may be defective.
D
Malfunction of lock cam
D
Malfunction of key interlock cable
D
Malfunction of key cylinder slider
Check items described in the column “Probable cause”.
INSPECTION PROCEDURE 7
Ignition key can be turned to LOCK (OFF) position when
selector lever is at positions other than P.
Probable cause
Lock cam, key cylinder cover or key interlock cable may be defective.
D
Malfunction of lock cam
D
Malfunction of key cylinder cover
D
Malfunction of key interlock cable
Check items described in the column “Probable cause”.
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