Mitsubishi Montero (2002-2004). Manual — part 928

DIAGNOSTIC TROUBLE CODE PROCEDURES <AUTOMATIC TRANSMISSION>

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DIAGNOSTIC TROUBLE CODE PROCEDURES

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STEP 5. Measure the solenoid valve resistance at the
reduction solenoid valve connector C-03-5 inside the
transmission.
(1) Disconnect solenoid valve connector C-03-5 and measure

at the solenoid valve side.

(2) Measure the resistance between reduction solenoid valve

terminals 1 and 2.

Resistance value: 2.7

− 3.4 ohms [at 20°C (68°F)]

Q: Is the measured resistance 2.7

− 3.4 ohms [at 20°C

(68

°F)?

YES : Replace the harness wire between A/T control

solenoid valve assembly connector C-03 and the
solenoid valves.

NO : Replace the reduction solenoid valve. Refer to

GROUP 23B, Valve Body

P.23B-80

.

AC204748

CONNECTOR : C-03-5

AF

1
2

AC204918

C-03-5 HARNESS CONNECTOR :
REDUCTION SOLENOID
VALVE SIDE

CQ

1
2

DIAGNOSTIC TROUBLE CODE PROCEDURES <AUTOMATIC TRANSMISSION>

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DIAGNOSTIC TROUBLE CODE PROCEDURES

23Ac-196

STEP 6. 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 7.
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>

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DIAGNOSTIC TROUBLE CODE PROCEDURES

23Ac-197

STEP 7. Check the harness for an open or short circuit to
ground between A/T control solenoid valve assembly
connector C-03 terminal 8 and PCM connector D-136
terminal 129.
Q: Is the harness wire in good condition?

YES : Replace the PCM.
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

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>

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DIAGNOSTIC TROUBLE CODE PROCEDURES

23Ac-198

STEP 8. Measure the supply voltage at A/T control
solenoid valve assembly connector C-03 by backprobing.
(1) Do not disconnect solenoid valve assembly harness

connector C-03.

(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between harness connector C-03

terminal 10 and ground by backprobing.

• The voltage should equal battery positive voltage.

(4) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Is the measured voltage battery positive voltage?

YES : Go to Step 11.
NO : Go to Step 9.

AC204395

CONNECTOR : C-03

AE

C-03 (B)

6

10

4

9

5

3

8

2

7

1

AC204918

6

9

5

10

8

3

7

2

1

4

AC204918 AK

C-03 HARNESS CONNECTOR :
HARNESS SIDE