Mitsubishi Montero (2004+). Manual - part 976

TRANSFER DIAGNOSIS <ACTIVE TRAC AWD II>

TSB Revision

AUTOMATIC TRANSMISSION

23A-479

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

TRANSFER DIAGNOSIS <ACTIVE TRAC AWD II>

TSB Revision

AUTOMATIC TRANSMISSION

23A-480

STEP 10. Using scan tool MB991958, check data list item 
30: Free-wheel Engage Solenoid Valve.

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect scan tool MB991958 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 MB991958 to the data reading mode.

• 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 dis-

play 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.

AC307591 AC

MB991911

MB991824

MB991827

AC307591

DATA LINK

CONNECTOR

TRANSFER DIAGNOSIS <ACTIVE TRAC AWD II>

TSB Revision

AUTOMATIC TRANSMISSION

23A-481

DTC 35: Free-wheel Engage Switch System

ACX02038 AC

Free-wheel Engage Switch System Circuit

AC204169

CONNECTOR : B-27

AD

B-27 (B)

8

4

7

3

5

1

6

2

AC204168

CONNECTOR : B-39

AC

B-39 (GR)

2

1

TRANSFER DIAGNOSIS <ACTIVE TRAC AWD II>

TSB Revision

AUTOMATIC TRANSMISSION

23A-482

.

CIRCUIT OPERATION
The free-wheel engage switch is turned ON when the 
freewheel engage solenoid valve is activated and the 
condition is shifted to the 4WD condition. The power 
supply voltage is imposed to the free-wheel engage 
switch from the transfer-ECU, and when the 
free-wheel engage switch is turned ON, the power 
supply voltage from the transfer-ECU is grounded.

.

DTC SET CONDITIONS
When the energizing condition to the free-wheel 
engage solenoid valve and the condition of 
free-wheel engage switch do not agree, DTC 35 is 
set as the open circuit or the short circuit on the 
free-wheel engage switch system.

.

TROUBLESHOOTING HINTS (THE MOST LIKELY 
CAUSES FOR THIS CODE TO BE SET ARE:)

• Malfunction of the free-wheel engage switch

• Damaged harness, connector

• Malfunction of the transfer-ECU

DIAGNOSIS

Required Special Tool:

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: V.C.I.

• MB991827: MUT-III USB Cable

• MB991911: MUT-III Main Harness B

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