Mitsubishi Montero (2004+). Manual - part 836

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-601

NOTE: Also check intermediate connectors D-111 and G-11 for 
loose, corroded, or damaged terminals, or terminals pushed 
back in the connector. If intermediate connectors D-111 or G-11 
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 back door lock actuator 

switch connector I-05 (terminal 4) and ETACS-ECU 
connector D-223 (terminal 47) 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 lock actuator 
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 lock actuator switch should be normal.

STEP 20. Check the wiring harness between driver's door 
lock actuator switch connector H-10 (terminal 1) and 
ground.

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

AC204179

CONNECTOR : G-11

AE

3

9

2

8

6

5

7

4

1

AC204180

CONNECTOR : H-10

AD

HARNESS SIDE

H-10(B)

H-10(B)

<DRIVER'S SIDE>

1

3 2

4

6 5

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-602

NOTE: Also check intermediate connector D-25 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the 
connector. If intermediate connector D-25 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 driver's door lock 

actuator switch connector H-10 (terminal 1) and ground 
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. If the 
functions, which are described in "CIRCUIT 
OPERATION", work normally, the input signal from 
the driver's door lock actuator switch should be 
normal.

AC204170

CONNECTOR : D-25

AE

10

9

31

30

20 21

7

6

28

17 18

8

19

29

4

3

25 26

14 15

1

23

12

2

13

24

5

16

27

11

22

32

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-603

INSPECTION PROCEDURE P-7: ETACS-ECU does not receive any signal from the door lock switch 
(incorporated in power window main switch and power window sub switch).

Door Lock Switch Input Circuit

AC204171

CONNECTOR : D-15

AH

AC204170

CONNECTOR : D-25

AZ

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-604

.

CIRCUIT OPERATION
The ETACS-ECU operates the central door locking 
system according to signal from the door lock switch.

.

TECHNICAL DESCRIPTION (COMMENT)
If the signal is not normal, the doors is not locked or 
unlocked. If the signal is not normal, the power win-
dow main switch, power window sub switch or the 
ETACS-ECU may be defective.

.

TROUBLESHOOTING HINTS

• The power window main switch or power window 

sub switch (door lock switch) 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

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: MUT-III USB Cable

• MB991911: MUT-III Main Harness B

AC204174

CONNECTOR : D-223

D-223(B)

AF

AC204180

CONNECTOR : H-05

AG

AC204181

CONNECTOR : H-16

AF