Mitsubishi Montero (2004+). Manual — part 700

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-57

.

CIRCUIT OPERATION

• Power to the sunroof motor assembly is supplied

through fusible links (1) and (4).

• When the ignition switch (IG2) signal is on, the

sunroof motor assembly is ready to operate.

.

TECHNICAL DESCRIPTION (COMMENT)
The power supply circuit or the communication circuit
to the sunroof motor assembly or the sunroof motor
assembly may be defective.

.

TROUBLESHOOTING HINTS

• The sunroof motor assembly may be defective

• The wiring harness or connectors may have

loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

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

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: MUT-III USB Cable

• MB991911: MUT-III Main Harness B

ACX02274

FUSIBLE LINK (1), (4)

AE

BATTERY

FUSIBLE LINK (4)

FUSIBLE LINK (1)

AC204170

CONNECTORS : D-01, D-02, D-26, D-28

D-01

BF

D-28

D-02

D-26

AC204173

CONNECTORS : D-207, D-208, D-210, D-211

D-207

D-208

D-210

D-211(B)

AP

AC204174

CONNECTOR : D-224

D-224(B)

AG

AC204177

CONNECTORS : F-02, F-24

AJ

F-02

F-24

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-58

STEP 1. Check sunroof motor assembly connector F-02 for
loose, corroded or damaged terminals, or terminals
pushed back in the connector.
Q: Is sunroof motor assembly connector F-02 in good

condition?
YES : Go to Step 2.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. The system should communicate with the

sunroof motor assembly (sunroof-ECU) normally.

STEP 2. Check the fusible link (1) line of power supply
circuit to the sunroof motor assembly. Test at sunroof
motor assembly connector F-02.

(1) Disconnect sunroof motor assembly connector F-02 and

measure the voltage available at the wiring harness side of
the connector.

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

• The voltage should be approximately 12 volts (battery

positive voltage).

Q: Is the measured voltage approximately 12 volts (battery

positive voltage)?
YES : Go to Step 4.
NO : Go to Step 3.

AC204177

CONNECTOR : F-02

AB

HARNESS SIDE

1

5

2

7

8

6

3

4

10 9

F-02

AC204177

CONNECTOR : F-02

AB

HARNESS SIDE

1

5

2

7

8

6

3

4

10 9

F-02

AC204458

5

1

7

8

6

2

9

10

4

3

AB

CONNECTOR: F-02
(HARNESS SIDE)

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-59

STEP 3. Check the wiring harness between sunroof motor
assembly connector F-02 (terminal 3) and fusible link (1).

ACX02274

FUSIBLE LINK (1)

AE

BATTERY

AC204195

CONNECTORS : F-02, F-24

F-02

AB

HARNESS SIDE

F-24

F-02

F-24

1

5

2

7

8

6

3

4

10 9

6

2

5

4

3

1

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-60

NOTE: Also check junction block connectors D-207, D-221,
intermediate connectors D-26, D-28 and F-24 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If junction block connectors D-207, D-221, interme-
diate connectors D-26, D-28 or F-24 is damaged, repair or
replace the damaged component(s) as described in GROUP
00E, Harness Connector Inspection

P.00E-2

.

Q: Is the wiring harness between sunroof motor assembly

connector F-02 (terminal 3) and fusible link (1) in good
condition?
YES : No action is necessary and testing is complete.
NO : The wiring harness may be damaged or the

connector(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. The system
should communicate with the sunroof motor assembly
(sunroof-ECU) normally.

AC204188

CONNECTORS : D-26, D-28

D-28

AH

D-26

D-28

D-26

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

2 3

1

7

6

12

11

8

13

5

4

9 10

AC204191

CONNECTORS : D-207, D-221

D-207

AB

HARNESS SIDE

HARNESS SIDE

D-221

D-207

D-221

3

1

4

6 5

7

8

2

1

2

3

4