Mitsubishi Montero (2004+). Manual — part 973

TRANSFER DIAGNOSIS <ACTIVE TRAC AWD II>

TSB Revision

AUTOMATIC TRANSMISSION

23A-467

• When the transfer position is 4HLc or 4LLc, connector

C-12 terminal 1 resistance should measure less than 2
ohms.
When the transfer position is other than 4HLc or 4LLc,
connector C-12 terminal 1 resistance should measure
open circuit.

• When the transfer position is 4LLc, connector C-05 ter-

minal 1 resistance should measure less than 2 ohms.
When the transfer position is other than 4LLc, connector
C-05 terminal 1 resistance should measure open circuit.

(7) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Are the resistance normal?

YES : Go to Step 11.
NO : Replace the each detection switch. Refer to GROUP

23B, Transfer

P.23B-75

.

STEP 11. Using scan tool MB991958, check data list item
07: Transfer Mode Detected.

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 data reading mode.

• Item 07: Transfer Mode Detected.

• Display should be the same as the actual transfer

shift lever position.

(5) Turn the ignition switch to the "LOCK" (OFF) position.
Q: Are all position operating properly?

YES : If 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>

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AUTOMATIC TRANSMISSION

23A-468

DTC 34: Free-wheel Engage Solenoid Valve System

ACX02037AB

Free-wheel Engage Solenoid Valve System Circuit

TRANSFER DIAGNOSIS <ACTIVE TRAC AWD II>

TSB Revision

AUTOMATIC TRANSMISSION

23A-469

AC204185

CONNECTORS : A-03, A-15, A-17

A-03 (B)

A-03

A-15

A-15

A-17 (GR)

A-17

AH

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

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

AC204170

CONNECTOR : D-28

CH

2 3

27

32

28

33

16

15

4 5

19

18

29

17

34

7 8

35

22

21

9 10

30

36

31

37

25

24

23

6

20

1

14

26

11

13

12

38

AC204191

CONNECTORS : D-208, D-210

D-208

D-208

D-210

D-210

AP

5 6

2

4

3

1

5

4

12 13

3

2

9

7 8

10

6

1

11

TRANSFER DIAGNOSIS <ACTIVE TRAC AWD II>

TSB Revision

AUTOMATIC TRANSMISSION

23A-470

.

CIRCUIT OPERATION
The power voltage from the ignition switch is
imposed to the free-wheel engage solenoid valves
(terminal 1), when the driving condition is shifted to
2WD the terminal 41 of the transfer-ECU is
grounded, which operates the free-wheel engage
solenoid valves.

.

DTC SET CONDITIONS
In the case that the free-wheel engage solenoid
valves operation and free-wheel engage solenoid
valves operation command (transfer shift lever, front
propeller shaft speed sensor and rear propeller shaft
speed sensor) do not match, the DTC 34 is set as
the open circuit or the short circuit of the free-wheel
engage solenoid valve system.

.

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

• Malfunction of free-wheel engage solenoid valve

• 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