Mitsubishi Montero (2002-2004). Manual — part 331

SYMPTOM PROCEDURES

TSB Revision

SWS SYMPTOM PROCEDURES

54Bb-371

NOTE: Also check junction block connectors D-210, D-211 and
intermediate connector D-28 for loose, corroded, or damaged
terminals, or terminals pushed back in the connector. If junction
block connector D-210, D-211 or intermediate connector D-28
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 combination meter

connector D-04 (terminal 34) and the fusible link (2) 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. Verify that
the high-beam indicator light illuminates normally.

STEP 8. Check combination meter connector D-04 and
ETACS-ECU connector D-224 for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Are combination meter connector D-04 and ETACS-ECU

connector D-224 in good condition?
YES : Go to Step 9.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. Verify that the high-beam indicator light

illuminates normally.

AC204191

CONNECTORS : D-210, D-211

AI

D-210

D-210

D-211(B)

D-211(B)

HARNESS SIDE

HARNESS SIDE

1

2

7 6

3

9

4

11

12

10

13

5

8

1

AC204170

CONNECTOR : D-04

AD

D-04(GR)

HARNESS
SIDE

D-04(GR)

31

32

41 40

33

34

36

37

35

43

46 45 44

39

42

38

47

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

SYMPTOM PROCEDURES

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SWS SYMPTOM PROCEDURES

54Bb-372

STEP 9. Check the wiring harness between combination
meter connector D-04 (terminal 35) and ETACS-ECU
connector D-224 (terminal 72).
NOTE: Also check joint connector D-29 for loose, corroded, or
damaged terminals, or terminals pushed back in the connector.
If joint connector D-29 is damaged, repair or replace the dam-
aged component(s) as described in GROUP 00E, Harness
Connector Inspection

P.00E-2

.

Q: Is the wiring harness between combination meter

connector D-04 (terminal 35) and ETACS-ECU connector
D-224 (terminal 72) 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. Verify that
the high-beam indicator light illuminates normally.

AC204188

CONNECTORS : D-04, D-29

D-04(GR)

AL

HARNESS SIDE

D-04(GR)

D-29

D-29

31

32

41 40

33

34

36

37

35

43

46 45 44

39

42

38

47

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

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

SYMPTOM PROCEDURES

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SWS SYMPTOM PROCEDURES

54Bb-373

INSPECTION PROCEDURE J-9: Headlight and Taillight: Headlight automatic shutdown function does
not work normally.

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

P.54Ba-8

."

.

CIRCUIT OPERATION
The ETACS-ECU operates the headlight automatic
shutdown function according to the following signals:

• Ignition switch (IG1)

• Driver's door switch

• Taillight switch

• Headlight switch

.

TECHNICAL DESCRIPTION (COMMENT)
If the function does not work normally, the input cir-
cuit system from the switches, the ETACS-ECU or
the front-ECU may be defective (refer to "CIRCUIT
OPERATION").

.

TROUBLESHOOTING HINTS

• The driver's door switch may be defective

• The column switch (lighting and turn-signal

switch) may be defective

• The ETACS-ECU may be defective

• The front-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 configuration function operation.
Q: Has the headlight automatic shutdown function been

enabled by means of the adjustment function?
YES : Go to Step 2.
NO : Enable the headlight automatic shutdown function

been by means of the adjustment function. Refer to

P.54Ba-26

.

Headlight Automatic Shutt-down Function

SYMPTOM PROCEDURES

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SWS SYMPTOM PROCEDURES

54Bb-374

STEP 2. Check the input signal by using "FUNCTION
DIAG." menu of the SWS monitor.
Check the input signals from the following switches:

• Ignition switch: "ON" to "OFF"

• Lighting switch: "TAIL" or "HEAD"

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

(16-pin).

(2) Connect SWS monitor kit MB991862 to the data link

connector (13-pin).

(3) Operate scan tool MB991502 according to the procedure

below to display "H/L AUTO-CUT."

1. Select "SYSTEM SELECT."
2. Select "SWS."
3. Select "SWS MONITOR."
4. Select "FUNCTION DIAG."
5. Select "LIGHTING."
6. Select "H/L AUTO-CUT."

(4) Check that normal conditions are displayed on the items

described in the table below.

(5) When the driver's door is opened, Check that normal

conditions are displayed on the items described in the table
below.

Q: Are normal conditions displayed on the "TAILLIGHT

SW", "IG SW (IG1)", "FRONT DOOR SW" and "H/L
AUTO-CUT"?
YES : Replace the front-ECU. Verify that the headlight

automatic shutdown function now works normally.

NO :

• Normal condition is not displayed on the "TAIL

LIGHT SW": Refer to Inspection Procedure O-6
"ETACS-ECU does not receive any signal from
the taillight switch

P.54Bc-31

."

• Normal condition is not displayed on the "IG SW

(IG1)": Refer to Inspection Procedure O-2
"ETACS-ECU does not receive any signal from
the ignition switch (IG1)

P.54Bc-7

."

• Normal condition is not displayed on the "FRONT

ITEM NO.

ITEM NAME

NORMAL CONDITION

ITEM 01

TAILLIGHT SW

ON

ITEM 30

IG SW (IG1)

OFF

ITEM NO.

ITEM NAME

NORMAL CONDITION

ITEM 32

FRONT DOOR
SW

ON

ITEM 35

H/L AUTO-CUT

ON

AC204222AB

16-pin

13-pin

MB991502

MB991862