Mitsubishi Montero (2002-2004). Manual - part 344

SYMPTOM PROCEDURES

TSB Revision

SWS SYMPTOM PROCEDURES

54Bb-423

STEP 32. Check front turn-signal light (LH) connector A-19 
and ETACS-ECU connector D-222 for loose, corroded or 
damaged terminals, or terminals pushed back in the 
connector.
Q:  Are front turn-signal light (LH) connector A-19 and 

ETACS-ECU connector D-222 in good condition?
YES : Go to Step 33.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Verify that the turn-signal lights illuminate 

normally.

AC204167

CONNECTOR : A-19

HARNESS 
SIDE

A-19(B)

A-19(B)

AH

1

2

AC204174

CONNECTOR : D-222

AB

1

2

3

5

6

4

9 8

121110

13

15 14

16

17

7

19

20

18

JUNCTION BLOCK SIDE

D-222

SYMPTOM PROCEDURES

TSB Revision

SWS SYMPTOM PROCEDURES

54Bb-424

STEP 33. Check the wiring harness between front turn-
signal light (LH) connector A-19 (terminal 1) and ETACS-
ECU connector D-222 (terminal 15).

AC204185

CONNECTORS : A-16, A-19

A-19(B)

A-16

AD

A-16

HARNESS SIDE

A-19(B)

1

2

5 6

2 3 4

1

AC204174

CONNECTOR : D-222

AB

1

2

3

5

6

4

9 8

121110

13

15 14

16

17

7

19

20

18

JUNCTION BLOCK SIDE

D-222

SYMPTOM PROCEDURES

TSB Revision

SWS SYMPTOM PROCEDURES

54Bb-425

NOTE: Also check junction block connector D-212, joint con-
nector A-16 and intermediate connector D-28 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the 
connector. If junction block connector D-212, joint connector A-
16 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 front turn-signal light 

(LH) connector A-19 (terminal 1) and ETACS-ECU 
connector D-222 (terminal 15) 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 turn-signal lights illuminate normally.

FOG LIGHT

GENERAL DESCRIPTION CONCERNING FOG LIGHT

M1549021400056

The following ECUs affect the functions and control 
of the fog lights and fog light indicator light.

Fog light and fog light indicator light
If the ETAS-ECU sends a fog light "ON" request signal to the 
front-ECU after the low-beam headlights are on, the fog light 
relay is turned on, allowing the fog lights and the fog light indi-
cator light to be illuminated. If the low-beam headlights is 
turned off, the fog lights will also be turn off automatically. 
Therefore, if the headlights are turned on at next opportunity, 
the fog lights do not illuminate.
If the high-beam headlights is turned on while the fog lights are 
on, the fog lights will be turned off. Then, if you switch the head-
lights from the high-beam to the low-beam, the fog lights will be 
turned on again.
NOTE: This description covers the fog lights only. In actual driv-
ing, the fog lights may be turned off due to the headlight auto-
matic shut-down function. For the details of the headlight 
automatic shut-down function, refer to its Section.

AC204170

CONNECTOR : D-28

AI

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

AC204173

CONNECTOR : D-212

AF

HARNESS SIDE

7 6 5

2 1

9 8

11 10

4 3

D-212

FUNCTION

CONTROL ECU

Fog light and fog light indicator light

ETACS-ECU, front-ECU, column switch

AC106400

ON

OFF

ON

OFF

ON

OFF

Fog light
switch

Headlight
switch 

ON

OFF

Dimmer
switch 

Fog light

AB

SYMPTOM PROCEDURES

TSB Revision

SWS SYMPTOM PROCEDURES

54Bb-426

General circuit diagram for the fog lights