Mitsubishi Montero (2004+). Manual - part 827

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-565

STEP 11. Check the wiring harness between rear door 
switch (RH) connector F-05 (terminal 2) and ETACS-ECU 
connector D-222 (terminal 7).

NOTE: Also check intermediate connector D-111 and junction 
block connector D-209 for loose, corroded, or damaged termi-
nals, or terminals pushed back in the connector. If junction 
block connector D-209 or intermediate connector D-111 is dam-
aged, 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 door switch (RH) 

connector F-05 (terminal 2) and ETACS-ECU connector 
D-222 (terminal 7) in good condition?
YES : Replace the ETACS-ECU. If the functions, which are 

described in "CIRCUIT OPERATION", work normally, 
the input signal from the rear door switch (RH) should 
be normal.

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 
functions, which are described in "CIRCUIT 
OPERATION", work normally, the input signal from 
the rear door switch (RH) should be normal.

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

AC204178

CONNECTOR : F-05

AB

HARNESS SIDE

1

2

3

F-05

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

AC204173

CONNECTOR : D-209

AD

HARNESS SIDE

1

2

6

7

9

3

4

11

12

10

5

13

8

D-209

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-566

STEP 12. Check back door switch connector G-15 for 
loose, corroded or damaged terminals, or terminals 
pushed back in the connector.
Q: Are back door switch connector G-15 in good 

condition?
YES : Go to Step 13.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. If the functions, which are described in 

"CIRCUIT OPERATION", work normally, the input 
signal from the back door switch should be normal.

STEP 13. Check the back door switch.
Remove the back door switch. Then check continuity between 
the switch terminals and the switch body.

Q: Is the back door switch in good condition?

YES : Go to Step 14.
NO :  Replace the back door switch. If the functions, which 

are described in "CIRCUIT OPERATION", work 
normally, the input signal from the back door switch 
should be normal.

STEP 14. Measure at the lower metal part of the back door 
switch in order to check the ground circuit to the back 
door switch.
NOTE: Check that the back door switch is grounded to the 
vehicle body by means of its mounting screw.
Remove the cap, and measure the resistance value between 
the lower metal part and the ground.

• The resistance should equal 2 ohms or less.

Q: Is the measured resistance 2 ohms or less?

YES : Go to Step 15.
NO :  Check the fit of the switch, and repair if necessary. If 

the functions, which are described in "CIRCUIT 
OPERATION", work normally, the input signal from 
the back door switch should be normal.

AC204179

CONNECTOR : G-15

AG

HARNESS SIDE

1

2

3

G-15

SWITCH 
POSITION

TESTER 
CONNECTION

SPECIFIED 
CONDITION

Released (ON)

2 

− switch body

Less than 2 ohms

Depressed (OFF) 2 

− switch body

Open circuit

1 2 3

ACX01865 AC

ON

OFF

ACX01600AB

METAL PART

CUP

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-567

STEP 15. Check ETACS-ECU connector D-222 for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.
Q: Is ETACS-ECU connector D-222 in good condition?

YES : Go to Step 16.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. If the functions, which are described in 

"CIRCUIT OPERATION", work normally, the input 
signal from the back door switch should be normal.

STEP 16. Check the wiring harness between back door 
switch connector G-15 (terminal 2) and ETACS-ECU 
connector D-222 (terminal 7).

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

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

AC204179

CONNECTOR : G-15

AG

HARNESS SIDE

1

2

3

G-15

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-568

NOTE: Also check intermediate connector D-125 and junction 
block connector D-217 for loose, corroded, or damaged termi-
nals, or terminals pushed back in the connector. If intermediate 
connector D-125 or junction block connector D-217 is dam-
aged, Repair or replace the damaged component(s) as 
described in GROUP 00E, Harness Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between back door switch 

connector G-15 (terminal 2) and ETACS-ECU connector 
D-222 (terminal 7) in good condition?
YES : Replace the ETACS-ECU. If the functions, which are 

described in "CIRCUIT OPERATION", work normally, 
the input signal from the back door switch should be 
normal.

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 
functions, which are described in "CIRCUIT 
OPERATION", work normally, the input signal from 
the back door switch should be normal.

STEP 17. Check rear door switch (LH) connector F-09 and 
ETACS-ECU connector D-222 for loose, corroded or 
damaged terminals, or terminals pushed back in the 
connector.
Q: Are rear door switch (LH) connector F-09 and 

ETACS-ECU connector D-222 in good condition?
YES : Go to Step 18.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. If the functions, which are described in 

"CIRCUIT OPERATION", work normally, the input 
signal from the rear door switch (LH) should be 
normal.

AC204170

CONNECTOR : D-125

AO

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

AC204173

CONNECTOR : D-217

AG

HARNESS SIDE

8

1

11 10

3

4

12

9

2

13

14

6 5

15

7

D-217

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

AC204178

CONNECTOR : F-09

AC

HARNESS SIDE

1

2

3

F-09