Mitsubishi Montero (2004+). Manual - part 769

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-333

STEP 33. Check rear light (RH) connector G-12 for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.
Q: Is rear light (RH) connector G-12 in good condition?

YES : Go to Step 34.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Verify that the taillight (RH) illuminates 

normally.

STEP 34. Check the ground circuit to the taillight (RH). Test 
at rear light (RH) connector G-12.
(1) Disconnect rear light (RH) connector G-12 and measure the 

resistance available at the wiring harness side of the 
connector.

(2) Measure the resistance value between terminal 3 and 

ground.

• The resistance should equal 2 ohms or less.

Q: Is the measured resistance 2 ohms or less?

YES : Go to Step 36.
NO :  Go to Step 35.

STEP 35. Check the wiring harness between rear light (RH) 
connector G-12 (terminal 3) and ground.

AC204179

CONNECTOR : G-12

AF

HARNESS SIDE

G-12(B)

G-12(B)

3

4

2

1

AC204179

CONNECTOR : G-12

AF

HARNESS SIDE

G-12(B)

G-12(B)

3

4

2

1

4

1

2

3

AC100265AC

CONNECTOR G-12
(HARNESS SIDE)

AC204179

CONNECTOR : G-12

AF

HARNESS SIDE

G-12(B)

G-12(B)

3

4

2

1

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-334

NOTE: Also check intermediate connector F-10 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the 
connector. If intermediate connector F-10 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 rear light (RH) connector 

G-12 (terminal 3) and ground in good condition?
YES : Replace the rear combination light socket (RH). Verify 

that the taillight (RH) illuminates normally.

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 taillight (RH) illuminates normally.

STEP 36. Check front-ECU connector A-07X for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.
Q: Is front-ECU connector A-07X in good condition?

YES : Go to Step 37.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Verify that the taillight (RH) illuminates 

normally.

AC204178

CONNECTOR : F-10

AD

F-10(GR)

F-10(GR)

3

1

2

4

5

6

AC204183

CONNECTOR : A-07X

AB

2 1

3

4

6

7

8

9

5

11 10

RELAY BOX SIDE

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-335

STEP 37. Check the wiring harness between rear light (RH) 
connector G-12 (terminal 1) and front-ECU connector 
A-07X (terminal 8).

AC204183

CONNECTOR : A-07X

AB

2 1

3

4

6

7

8

9

5

11 10

RELAY BOX SIDE

AC204179

CONNECTOR : G-12

AF

HARNESS SIDE

G-12(B)

G-12(B)

3

4

2

1

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-336

NOTE: Also check intermediate connectors D-28, D-111 and 
F-10 for loose, corroded, or damaged terminals, or terminals 
pushed back in the connector. If intermediate connector D-28, 
D-111 or F-10 is damaged, repair or replace the damaged com-
ponent(s) as described in GROUP 00E, Harness Connector 
Inspection 

P.00E-2

.

Q: Is the wiring harness between rear light (RH) connector 

G-12 (terminal 1) and front-ECU connector A-07X 
(terminal 8) in good condition?
YES : Replace the rear light socket (RH). Verify that the 

taillight (RH) illuminates normally.

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 taillight (RH) illuminates normally.

STEP 38. Check the license plate light bulb.
(1) Remove the license plate light bulb.
(2) Verify that the license plate light bulb is not damaged or 

burned out.

Q: Is the license plate light bulb in good condition?

YES : Go to Step 39.
NO :  Replace the license plate light bulb. Verify that the 

license plate light illuminate normally.

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

AC204171

CONNECTOR : D-111

BH

9

8

6 7

5

3 4

20

32

21

33

43

17 18

30

41

16

29

28

39 40

13

25

12

24

35 36

14

26

37

15

27

38

19

31

42

1

10

22

2

11

23

34

AC204178

CONNECTOR : F-10

AD

F-10(GR)

F-10(GR)

3

1

2

4

5

6