Mitsubishi Montero (2002-2004). Manual - part 963

DIAGNOSTIC TROUBLE CODE PROCEDURES <TRANSFER>

TSB Revision

DIAGNOSTIC TROUBLE CODE PROCEDURES

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STEP 7. Check joint connector A-17, free-wheel engage 
solenoid valve connectors A-38, A-39, intermediate 
connectors A-03, E-114 and transfer-ECU connector E-104 
for loose, corroded or damaged terminals, or terminals 
pushed back in the connector.

AC204185

CONNECTORS : A-03, A-17

A-03 (B)

A-03

A-17 (GR)

A-17

AI

6

12

5

3 4

2

1

9 10

8

7

11

1213

4 5

14

10

3

8 9

2

7

1

6

11

AC204184

CONNECTORS : A-38, A-39

A-38 (B)

A-39 (BR)

AD

A-38

2

1

A-39

2

1

DIAGNOSTIC TROUBLE CODE PROCEDURES <TRANSFER>

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DIAGNOSTIC TROUBLE CODE PROCEDURES

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Q: Are the connectors and terminals in good condition?

YES : Go to Step 8.
NO :  Repair or replace the damaged components. Refer to 

GROUP 00E, Harness Connector Inspection 

P.00E-

2

.

AC204194

CONNECTORS : E-104, E-114

E-104

E-104

E-114

E-114

AU

51

40

3839

50

41

52

48

37

46

35

47

36

45

34

43

32

44

33

49

42

31

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 <TRANSFER>

TSB Revision

DIAGNOSTIC TROUBLE CODE PROCEDURES

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STEP 8. Check harness for damage between free-wheel 
engage solenoid valve connectors A-38, A-39 terminal 2 
and transfer-ECU connector E-104 terminal 41.
Q: Is the harness wire in good condition?

YES : Go to Step 10.
NO :  Repair or replace the harness wire.

STEP 9. Check transfer-ECU connector E-104 for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.
Q: Are the connector and terminals in good condition?

YES : Go to Step 10.
NO :  Repair or replace the damaged components. Refer to 

GROUP 00E, Harness Connector Inspection 

P.00E-

2

.

AC204184

CONNECTORS : A-38, A-39

A-38 (B)

A-39 (BR)

AD

A-38

2

1

A-39

2

1

AC204176

CONNECTOR : E-104

BA

51

40

3839

50

41

52

48

37

46

35

47

36

45

34

43

32

44

33

49

42

31

AC204176

CONNECTOR : E-104

BA

51

40

3839

50

41

52

48

37

46

35

47

36

45

34

43

32

44

33

49

42

31

DIAGNOSTIC TROUBLE CODE PROCEDURES <TRANSFER>

TSB Revision

DIAGNOSTIC TROUBLE CODE PROCEDURES

23Ac-338

STEP 10. Using scan tool MB991502, check data list item 
30: Free-wheel Engage 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) Transmission range should be "N" range.
(4) Set scan tool MB991502 to the data reading mode for item 

30, Free-wheel Engage Solenoid Valve.

• When the transfer shift lever position is other than 2H, 

the display should be "ON."

• When the transfer shift lever position is 2H, the display 

should be "OFF."

(5) 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 Malfunction 

P.00-6

.

NO :  Replace the transfer-ECU

DTC 35: Free-wheel Engage Switch System

ACX01539AD

MB991502

16-PIN

ACX02038 AC

Free-wheel Engage Switch System Circuit