Mitsubishi Montero (2002-2004). Manual - part 374

INPUT SIGNAL PROCEDURES

TSB Revision

SWS INPUT SIGNAL PROCEDURES

54Bc-43

STEP 2. Check sunroof motor assembly connector F-02 
and ETACS-ECU connector D-224 for loose, corroded or 
damaged terminals, or terminals pushed back in the 
connector.
Q: Are sunroof motor assembly connector F-02 and 

ETACS-ECU connector D-224 in good condition?
YES : Go to Step 3.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. If the sunroof operates normally, it indicates 

that a correct signal is sent from the sunroof switch.

AC204174

CONNECTOR : D-224

AD

D-224(B)

D-224(B)

HARNESS SIDE

21

23

24

22

32

3433

31

26

27

28

3029

38

39

40

36

37

25

35

AC204177

CONNECTOR : F-02

AB

HARNESS SIDE

1

5

2

7

8

6

3

4

10 9

F-02

INPUT SIGNAL PROCEDURES

TSB Revision

SWS INPUT SIGNAL PROCEDURES

54Bc-44

STEP 3. Check the wiring harness between sunroof motor 
assembly connector F-02 (terminal 10) and ETACS-ECU 
connector D-224 (terminal 21).

AC204174

CONNECTOR : D-224

AD

D-224(B)

D-224(B)

HARNESS SIDE

21

23

24

22

32

3433

31

26

27

28

3029

38

39

40

36

37

25

35

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

INPUT SIGNAL PROCEDURES

TSB Revision

SWS INPUT SIGNAL PROCEDURES

54Bc-45

NOTE: Also check intermediate connectors F-24, D-26 and 
joint connector D-02 for loose, corroded, or damaged terminals, 
or terminals pushed back in the connector. If intermediate con-
nector F-24, D-26 or joint connector D-02 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 10) and ETACS-ECU connector 
D-224 (terminal 21) in good condition?
YES : Go to Step 4.
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. If the sunroof 
operates normally, it indicates that a correct signal is 
sent from the sunroof switch.

STEP 4. Replace the ECU.
(1) Replace the sunroof motor assembly.
(2) If the sunroof operates normally, it indicates that a correct 

signal is sent from the sunroof switch.

Q: Does the ETACS-ECU receive correct signals from the 

sunroof switch?
YES : No action is necessary and testing is complete.
NO :  Replace the ETACS-ECU. If the sunroof operates 

normally, it indicates that a correct signal is sent from 
the sunroof switch.

AC204188

CONNECTORS : D-02, D-26

D-26

D-02

AE

D-02

D-26

9 10

8

6 7

31 32

30

29

18 19 20 21

5

4

2

1

3

27

26

24

23

25

12 13 14 15 16 17

28

11
22
33

2 3

1

7

6

12

11

8

13

5

4

9 10

INPUT SIGNAL PROCEDURES

TSB Revision

SWS INPUT SIGNAL PROCEDURES

54Bc-46

INSPECTION PROCEDURE O-10: RV Meter: ETACS-ECU does not receive any signal from any control 
switches.

NOTE: This troubleshooting procedure requires the 
use of scan tool MB991502 and SWS monitor kit 
MB991862. For details of how to use the SWS moni-
tor, refer to "How to use SWS monitor 

P.54Ba-8

."

.

CIRCUIT OPERATION
The RV meter sends a tone alarm request signal to 
the SWS communication line. If the ETACS-ECU 
receives the request signal, it sound its tone alarm.

.

TECHNICAL DESCRIPTION (COMMENT)
If the SWS communication line between the RV 
meter and the ETACS-ECU is defective, the ETACS-
ECU can not identify any input signals from the RV 
meter even if the RV meter is normal.

.

TROUBLESHOOTING HINTS

• The RV meter may be defective

• The ETACS-ECU may be defective

• The wiring harness or connectors may have 

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

RV Meter Any Control Switch Circuit

AC204170

CONNECTORS : D-02, D-08

BG

D-08(B)

D-02

AC204174

CONNECTOR : D-224

D-224(B)

AG