Mitsubishi Montero (2002-2004). Manual — part 373

INPUT SIGNAL PROCEDURES

TSB Revision

SWS INPUT SIGNAL PROCEDURES

54Bc-39

STEP 3. Check column switch connector D-203 and
ETACS-ECU connector D-224 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Are column switch connector D-203 and ETACS-ECU

connector D-224 in good condition?
YES : Go to Step 4.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. If the wiper interval can be adjusted

normally, it indicates that the windshield intermittent
wiper interval adjusting knob should send a signal to
the ECU.

STEP 4. Check the wiring harness between column switch
connector D-203 (terminal 6) and ETACS-ECU connector D-
224 (terminal 34).
Q: Is the wiring harness between column switch connector

D-203 (terminal 6) and ETACS-ECU connector D-224
(terminal 34) in good condition?
YES : Go to Step 5.
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 wiper
interval can be adjusted normally, it indicates that the
windshield intermittent wiper interval adjusting knob
should send a signal to the ECU.

AC204172

CONNECTOR : D-203

AC

HARNESS SIDE

1

2

3

7

8

6

5

10

4

9

D-203

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

AC204172

CONNECTOR : D-203

AC

HARNESS SIDE

1

2

3

7

8

6

5

10

4

9

D-203

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

INPUT SIGNAL PROCEDURES

TSB Revision

SWS INPUT SIGNAL PROCEDURES

54Bc-40

STEP 5. Replace the ECU.
(1) Replace the ETACS-ECU.
(2) If the wiper interval can be adjusted normally, it indicates

that the windshield intermittent wiper interval adjusting knob
should send a signal to the ECU.

Q: Can input signal be confirmed when the windshield

intermittent wiper interval adjusting knob is operated?
YES : No action is necessary and testing is complete.
NO : Replace the column switch (windshield wiper and

washer switch). If the wiper interval can be adjusted
normally, it indicates that the windshield intermittent
wiper interval adjusting knob should send a signal to
the ECU.

INPUT SIGNAL PROCEDURES

TSB Revision

SWS INPUT SIGNAL PROCEDURES

54Bc-41

INSPECTION PROCEDURE O-9: Sunroof Switch: ETACS-ECU does not receive any signal from the
up, open or close/down switch.

Sunroof Switch Input Circuit

AC204170

CONNECTORS : D-02, D-26

BO

D-02

D-26

AC204174

CONNECTOR : D-224

D-224(B)

AG

INPUT SIGNAL PROCEDURES

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SWS INPUT SIGNAL PROCEDURES

54Bc-42

.

CIRCUIT OPERATION
The ETACS-ECU receives a signal through the sun-
roof motor assembly via the SWS communication
line from the sunroof switch, and sends a signal to
the data link connector.

.

TECHNICAL DESCRIPTION (COMMENT)
If the SWS communication line between the sunroof
motor assembly and the ETACS-ECU is defective,
the ETACS-ECU cannot identify the input signal from
the sunroof switch even if the sunroof is normal.

.

TROUBLESHOOTING HINTS

• The sunroof switch may be defective

• The sunroof motor assembly 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

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB991502: Scan Tool (MUT-II)

• MB991862: SWS monitor kit

STEP 1. Verify the sunroof operation.
Q: Does the sunroof work normally?

YES : Go to Step 2.
NO : Refer to Inspection Procedure F-1 "Sunroof does not

operate

P.54Bb-212

."

AC204177

CONNECTORS : F-02, F-24

AJ

F-02

F-24