Mitsubishi Montero (2002-2004). Manual — part 961

DIAGNOSTIC TROUBLE CODE PROCEDURES <TRANSFER>

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DIAGNOSTIC TROUBLE CODE PROCEDURES

23Ac-327

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

DIAGNOSTIC TROUBLE CODE PROCEDURES <TRANSFER>

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DIAGNOSTIC TROUBLE CODE PROCEDURES

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.

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

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>

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DIAGNOSTIC TROUBLE CODE PROCEDURES

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DIAGNOSIS

Required Special Tool:

• MB991502: Scan Tool (MUT-II)

STEP 1. 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 : Go to Step 2.

STEP 2. Check the free-wheel engage solenoid valve.
Refer to GROUP 26, On-vehicle Service

− Solenoid Valve

Operation Check

P.26-16

.

Q: Is the solenoid valve operating properly?

YES : Go to Step 3.
NO : Replace the free-wheel engage solenoid valve. Refer

to GROUP 26, Solenoid Valve and Vacuum Hose

P.26-57

.

ACX01539AD

MB991502

16-PIN

DIAGNOSTIC TROUBLE CODE PROCEDURES <TRANSFER>

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DIAGNOSTIC TROUBLE CODE PROCEDURES

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STEP 3. Measure the power supply voltage at free-wheel
engage solenoid valve connectors A-38 and A-39.
(1) Disconnect connectors A-38 and A-39.
(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal 1 and ground.

• The voltage should measure 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 6.
NO : Go to Step 4.

AC204184

CONNECTORS : A-38, A-39

A-38 (B)

A-39 (BR)

AD

A-38

2

1

A-39

2

1

AC204918

1
2

A-38, A-39 HARNESS CONNECTOR :
COMPONENT SIDE