Mitsubishi Montero (2004+). Manual — part 830

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-577

STEP 10. Check the front passenger's door lock key
cylinder switch.
Disconnect front passenger's door lock key cylinder switch con-
nector H-18. Then check continuity between the switch termi-
nals.

Q: Is the front passenger's door lock key cylinder switch in

good condition?
YES : Go to Step 11.
NO : Replace the front passenger's door lock key cylinder

switch. If the systems, which are described in
"CIRCUIT OPERATION", work normally, the input
signal from the front passenger's door lock key
cylinder switch should be normal.

STEP 11. Check the ground circuit to the front passenger’s
door lock key cylinder switch. Test at front passenger’s
door lock key cylinder switch connector H-18.
(1) Disconnect front passenger's door lock key cylinder switch

connector H-18 measure the resistance available at the
wiring harness side of the connector.

(2) Measure the resistance value between terminal 2 and

ground.

• The resistance should equal 2 ohms or less.

Q: Is the measured resistance 2 ohms or less?

YES : Go to Step 13.
NO : Go to Step 12.

SWITCH
POSITION

TESTER
CONNECTION

SPECIFIED
CONDITION

LOCK

1

− 2

Less than 2 ohms

Neutral (OFF)

1

− 2, 2 − 3

Open circuit

UNLOCK

2

− 3

Less than 2 ohms

ACX02410

1

2

3

AC204181

CONNECTOR : H-18

AC

HARNESS SIDE

<PASSENGER'S SIDE>

H-18(B)

H-18(B)

1

2

3

3

1

2

ACX01601AD

CONNECTOR H-18
(HARNESS SIDE)

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-578

STEP 12. Check the wiring harness between front
passenger's door lock key cylinder switch connector H-18
(terminal 2) and ground.

NOTE: Also check intermediate connector D-15 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connectors D-15 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 passenger's door

lock key cylinder switch connector H-18 (terminal 2) 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
systems, which are described in "CIRCUIT
OPERATION", work normally, the input signal from
the front passenger's door lock key cylinder switch
should be normal.

STEP 13. Check ETACS-ECU connector D-223 for loose,
corroded or damaged terminals, or terminals pushed back
in the connector.
Q: Is ETACS-ECU connector D-223 in good condition?

YES : Go to Step 14.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. If the systems, which are described in

"CIRCUIT OPERATION", work normally, the input
signal from the front passenger's door lock key
cylinder switch should be normal.

AC204181

CONNECTOR : H-18

AC

HARNESS SIDE

<PASSENGER'S SIDE>

H-18(B)

H-18(B)

1

2

3

AC204171

CONNECTOR : D-15

AB

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

AC204174

CONNECTOR : D-223

AC

D-223(B)

D-223(B)

HARNESS SIDE

42

43

50

51

45

46

53

54

52

44

48

5655

47

49

41

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-579

STEP 14. Check the wiring harness between front
passenger's door lock key cylinder switch connector H-18
(terminals 1 and 3) and ETACS-ECU connector D-223
(terminals 50 and 51).

NOTE: Also check intermediate connector D-15 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the
connector. If intermediate connectors D-15 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 passenger's door

lock key cylinder switch connector H-18 (terminals 1
and 3) and ETACS-ECU connector D-223 (terminals 50
and 51) in good condition?
YES : Replace the ETACS-ECU. If the systems, which are

described in "CIRCUIT OPERATION", work normally,
the input signal from the front passenger's door lock
key cylinder 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
systems, which are described in "CIRCUIT
OPERATION", work normally, the input signal from
the front passenger's door lock key cylinder switch
should be normal.

AC204174

CONNECTOR : D-223

AC

D-223(B)

D-223(B)

HARNESS SIDE

42

43

50

51

45

46

53

54

52

44

48

5655

47

49

41

AC204181

CONNECTOR : H-18

AC

HARNESS SIDE

<PASSENGER'S SIDE>

H-18(B)

H-18(B)

1

2

3

AC204171

CONNECTOR : D-15

AB

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-580

STEP 15. Check back door lock key cylinder switch
connector I-06 for loose, corroded or damaged terminals,
or terminals pushed back in the connector.
Q: Is back door lock key cylinder switch connector I-06 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 systems, which are described in

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

STEP 16. Check the back door lock key cylinder switch.
Disconnect back door lock key cylinder switch connector I-06.
Then check continuity between the switch terminals.

Q: Is the back door lock key cylinder switch in good

condition?
YES : Go to Step 17.
NO : Replace the back door lock key cylinder switch. If the

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

AC204182

CONNECTOR : I-06

AD

HARNESS SIDE

2

3

1

I-06

SWITCH
POSITION

TESTER
CONNECTION

SPECIFIED
CONDITION

LOCK

1

− 2

Less than 2 ohms

Neutral (OFF)

1

− 2, 2 − 3

Open circuit

UNLOCK

2

− 3

Less than 2 ohms

ACX02411

1

2

3