Mitsubishi Montero (2004+). Manual - part 870

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-55

STEP 11. Check the harness for short circuit to ground 
between A/T control solenoid valve connector C-03 
terminal 1 and PCM connector D-135 terminal 119.
Q: Is the harness wire in good condition?

YES : Go to Step 6.
NO :  Repair or replace the harness wire.

AC204395

CONNECTOR : C-03

AE

C-03 (B)

6

10

4

9

5

3

8

2

7

1

AC204681AB

CONNECTOR: D-135

D-135 (GR)

91 92

93

101

94 95

96 97 98 99 100

102103

104

105106

107108 109

110 111112

113114

115116 117

118 119120

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-56

STEP 12. Check A/T control solenoid valve assembly 
connector C-03, PCM connector D-135 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 13.
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

AC204681AB

CONNECTOR: D-135

D-135 (GR)

91 92

93

101

94 95

96 97 98 99 100

102103

104

105106

107108 109

110 111112

113114

115116 117

118 119120

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

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-57

STEP 13. Check the harness for open circuit between A/T 
control solenoid valve connector C-03 terminal 1 and PCM 
connector D-135 terminal 119.
Q: Is the harness wire in good condition?

YES : Go to Step 6.
NO :  Repair or replace the harness wire.

AC204395

CONNECTOR : C-03

AE

C-03 (B)

6

10

4

9

5

3

8

2

7

1

AC204681AB

CONNECTOR: D-135

D-135 (GR)

91 92

93

101

94 95

96 97 98 99 100

102103

104

105106

107108 109

110 111112

113114

115116 117

118 119120

AUTOMATIC TRANSMISSION DIAGNOSIS

TSB Revision

AUTOMATIC TRANSMISSION

23A-58

STEP 14. Measure the ground voltage at PCM connector 
D-135 by backprobing.
(1) Do not disconnect connector D-135.
(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal 96 and ground by 

backprobing.

• Voltage should measure 0.5 volt or less.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage within the specified range?

YES : Go to Step 15.
NO :  Go to Step 17.

AC204681AB

CONNECTOR: D-135

D-135 (GR)

91 92

93

101

94 95

96 97 98 99 100

102103

104

105106

107108 109

110 111112

113114

115116 117

118 119120

AC204918 BQ

D-135 HARNESS CONNECTOR : 
HARNESS SIDE

116

97

103

104

112

110 111

106

94 95

98

102

101

100

99

109

115

107

119 120

96

105

91

113

108

117

93

92

114

118