Mitsubishi Montero (2002-2004). Manual - part 297

SYMPTOM PROCEDURES

TSB Revision

SWS SYMPTOM PROCEDURES

54Bb-235

STEP 3. Check the windshield wiper motor.
(1) Disconnect windshield wiper motor connector B-12.
(2) Connect a battery to the windshield wiper motor as shown. 

Then check the windshield wiper motor operates normally 
at high and low speeds.

Q: Does the windshield wiper motor operate normally?

YES : Go to Step 4.
NO :  Replace the windshield wiper motor. Verify that the 

windshield wiper works normally.

STEP 4. Check the ground circuit to the windshield wiper 
motor. Test at windshield wiper motor connector B-12.
(1) Disconnect windshield wiper motor connector B-12 and 

measure the resistance available at the wiring harness side 
of the connector.

(2) Measure the resistance value between terminal 5 and 

ground.

• The resistance should equal 2 ohms or less.

Q:  Is the measured resistance 2 ohms or less?

YES : Go to Step 7.
NO :  Go to Step 5.

1

2 3

4

5

1

2 3

4

5

ACX02403

B-12

AB

LOW-SPEED

HIGH-SPEED

AC205116 AC

CONNECTOR: B-12

B-12 (B)

B-12 (B)

1

2

3

4

5

ACX01576AB

CONNECTOR B-12
(HARNESS SIDE)

SYMPTOM PROCEDURES

TSB Revision

SWS SYMPTOM PROCEDURES

54Bb-236

STEP 5. Check windshield wiper motor connector B-12 for 
loose, corroded or damaged terminals, or terminals 
pushed back in the connector.
Q: Is windshield wiper motor connector B-12 in good 

condition?
YES : Go to Step 6.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Verify that the windshield wiper works 

normally.

STEP 6. Check the wiring harness between windshield 
wiper motor connector B-12 (terminal 5) and ground.
Q: Is the wiring harness between windshield wiper motor 

connector B-12 (terminal 5) and ground in good 
condition?
YES : No action is necessary and testing is complete.
NO :  The wiring harness may be damaged or the connector 

may have loose, corroded or damaged terminals, or 
terminals pushed back in the connector. Repair the 
wiring harness as necessary. Verify that the 
windshield wiper works normally.

STEP 7. Check the ignition switch (ACC) circuit to the 
front-ECU. Test at front-ECU connector A-08X.
(1) Disconnect front-ECU connector A-08X, and measure at 

the relay box side.

(2) Turn the ignition switch to the "ON" position.

(3) Measure the voltage between terminal 24 and ground.

• The voltage should be approximately 12 volts (battery 

positive voltage).

Q: Is the measured voltage approximately 12 volts (battery 

positive voltage)?
YES : Go to Step 10.
NO :  Go to Step 8.

AC205116 AC

CONNECTOR: B-12

B-12 (B)

B-12 (B)

AC205116 AD

CONNECTOR: B-12

B-12 (B)

(HARNESS SIDE)

B-12 (B)

1

2

3

4

5

AC205138

CONNECTOR: A-08X

AC

BATTERY

FRONT-ECU

A-08X

A-08X

21

22

23

24

25

27 26

28

29

30

31

ACX01611AB

CONNECTOR A-08X
(HARNESS SIDE)

SYMPTOM PROCEDURES

TSB Revision

SWS SYMPTOM PROCEDURES

54Bb-237

STEP 8. Check front-ECU connector A-08X for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.
Q: Is front-ECU connector A-08X in good condition? 

YES : Go to Step 9.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Verify that the windshield wiper works 

normally.

STEP 9. Check the wiring harness between front-ECU 
connector A-08X (terminal 24) and the ignition switch 
(ACC).

NOTE: Also check intermediate connector D-28, junction block 
connectors D-208 and D-221 for loose, corroded, or damaged 
terminals, or terminals pushed back in the connector. If inter-
mediate connector D-28, junction block connector D-208 or D-
221 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-ECU connector A-

08X (terminal 24) and the ignition switch (ACC) in good 
condition?
YES : No action is necessary and testing is complete.
NO :  The wiring harness may be damaged or the connector 

may have loose, corroded or damaged terminals, or 
terminals pushed back in the connector. Repair the 
wiring harness as necessary. Verify that the 
windshield wiper works normally.

AC205138

CONNECTOR: A-08X

AC

BATTERY

FRONT-ECU

A-08X

A-08X

AC205138

CONNECTOR: A-08X

AC

BATTERY

FRONT-ECU

A-08X

A-08X

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

ACX02285

CONNECTORS: D-208, D-221

BW

JUNCTION BLOCK (FRONT VIEW)

D-208

D-221

D-208

D-221

SYMPTOM PROCEDURES

TSB Revision

SWS SYMPTOM PROCEDURES

54Bb-238

STEP 10. Check front-ECU connector A-08X for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.
Q: Is front-ECU connector A-08X in good condition?

YES : Go to Step 11.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Verify that the windshield wiper works 

normally.

AC205138

CONNECTOR: A-08X

AC

BATTERY

FRONT-ECU

A-08X

A-08X