Mitsubishi Montero (2002-2004). Manual - part 924

 

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Mitsubishi Montero (2002-2004). Manual - part 924

 

 

DIAGNOSTIC TROUBLE CODE PROCEDURES <AUTOMATIC TRANSMISSION>

TSB Revision

DIAGNOSTIC TROUBLE CODE PROCEDURES

23Ac-179

STEP 11. Check A/T control solenoid valve assembly 
connector C-03, PCM connector D-136 and intermediate 
connector E-114 for loose, corroded or damaged 
terminals, or terminals pushed back in the connector.
Q: Are the connectors and terminals in good condition?

YES : Go to Step 12.
NO :  Repair or replace the damaged components. Refer to 

GROUP 00E, Harness Connector Inspection 

P.00E-

2

.

AC204395

CONNECTOR : C-03

AE

C-03 (B)

6

10

4

9

5

3

8

2

7

1

AC204681AD

CONNECTOR: D-136

D-136 (GR)

121 122

123

124

125 126 127 128 129 130

131 132

133

134 135

136 137 138

139 140

141

142 143

144

145

146

AC204176

CONNECTOR : E-114

BD

38

28

16

33

22

10

31

19

7

1

18

30

29

17

5

6

21

20

32

8

2

9

25

13

3

24

23

3435

1112

27

26

3637

14

4

15

DIAGNOSTIC TROUBLE CODE PROCEDURES <AUTOMATIC TRANSMISSION>

TSB Revision

DIAGNOSTIC TROUBLE CODE PROCEDURES

23Ac-180

STEP 12. Check the harness for an open or short circuit to 
ground between A/T control solenoid valve assembly 
connector C-03 (terminals 3, 4 and 5) and PCM connector 
D-136 (terminals 136, 137 and 138).
Q: Are the harness wires in good condition?

YES : Go to Step 13.
NO :  Repair or replace the harness wire(s).

AC204395

CONNECTOR : C-03

AE

C-03 (B)

6

10

4

9

5

3

8

2

7

1

AC204681AD

CONNECTOR: D-136

D-136 (GR)

121 122

123

124

125 126 127 128 129 130

131 132

133

134 135

136 137 138

139 140

141

142 143

144

145

146

DIAGNOSTIC TROUBLE CODE PROCEDURES <AUTOMATIC TRANSMISSION>

TSB Revision

DIAGNOSTIC TROUBLE CODE PROCEDURES

23Ac-181

STEP 13. Check the harness for an open or short circuit to 
ground between A/T control solenoid valve assembly 
connector C-03 (terminals 3, 4, 5 and 9) and solenoid valve 
connectors C-03-1, C-03-2 and C-03-3.
Q: Is the harness wire in good condition?

YES : Replace the PCM.
NO :  Replace the harness wire.

DTC 34: Overdrive Solenoid Valve System

.

Solenoid Valve System Circuit
Refer to 

P.23Ac-147

.

.

CIRCUIT OPERATION
Refer to 

P.23Ac-147

.

.

DTC SET CONDITIONS
If the resistance value for the overdrive solenoid 
valve circuit is greater than 3.5 ohms (open) or less 
than 2.6 ohms (short) for 4 seconds, DTC 34 is set. 
The transmission is locked into 3rd gear as a fail-
safe measure, and the "N" range light flashes once 
per second.

.

TROUBLESHOOTING HINTS (The most likely 
causes for this code to be set are:)

• Malfunction of overdrive solenoid valve

AC204395

CONNECTOR : C-03

AE

C-03 (B)

6

10

4

9

5

3

8

2

7

1

AC204749

1
2

CONNECTORS : C-03-1, C-03-2, C-03-3

C-03-1

C-03-1

1
2

C-03-2

1
2

C-03-3

C-03-2

C-03-3

AB

DIAGNOSTIC TROUBLE CODE PROCEDURES <AUTOMATIC TRANSMISSION>

TSB Revision

DIAGNOSTIC TROUBLE CODE PROCEDURES

23Ac-182

• Damaged harness, connector

• Malfunction of the PCM

DIAGNOSIS

Required Special Tool:

• MB991502: Scan Tool (MUT-II)

STEP 1. Using scan tool MB991502, check actuator test 
item 04: Overdrive Solenoid Valve.

CAUTION

To prevent damage to scan tool MB991502, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991502.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Set scan tool MB991502 to actuator test mode for item 04, 

Overdrive Solenoid Valve.

• An audible clicking or buzzing should be heard when the 

overdrive solenoid valve is energized.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the solenoid valve operating properly?

YES : It can be assumed that this malfunction is intermittent. 

Refer to GROUP 00, How to Use Troubleshooting/
Inspection Service Points 

− How to Cope with 

Intermittent Malfunctions 

P.00-6

.

NO :  Go to Step 2.

STEP 2. Using scan tool MB991502, read the A/T 
diagnostic trouble code.
(1) Connect scan tool MB991502 to the data link connector.
(2) Turn the ignition switch to the "ON" position.
(3) Check for A/T diagnostic trouble code.
(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is DTC 54 set? (DTC 54 may be set along with multiple 

DTCs.)
YES : 
Refer to 

P.23Ac-237

 DTC 54: A/T Control Relay 

System.

NO :  Go to Step 3.

ACX01539AD

MB991502

16-PIN

ACX01539AD

MB991502

16-PIN

 

 

 

 

 

 

 

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