Mitsubishi Montero (2002-2004). Manual — part 301

SYMPTOM PROCEDURES

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SWS SYMPTOM PROCEDURES

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DIAGNOSIS

Required Special Tool:

• MB991223: Harness Set

STEP 1. Check the windshield wiper motor.
(1) Disconnect windshield wiper motor connector B-12.
(2) Connect the windshield wiper motor connector terminal 4 to

the positive battery terminal and terminal 5 to the ground as
shown in the illustration (A), and operate the windshield
wiper at low speed. While the windshield wiper is working,
disconnect the battery at positions other than the
predetermined park position to stop the windshield wiper
motor.

(3) When connect the windshield wiper motor connector

terminal 2 to the positive battery terminal, terminal 5 to the
ground and terminal 3 to terminal 4 as shown in the
illustration (B), the motor should run at low speed, and then
stop at the predetermined park position.

Q: Does the windshield wiper motor operate normally?

YES : Go to Step 2.
NO : Replace the windshield wiper motor. Verify the

windshield wiper should now stop at the
predetermined park position.

AC203856

1

4

2

3

5

1

4

2

3

5

1

4

2

3

5

AB

STOP POSITION CHECK

(B) AUTOMATICAL STOP

(A) LOW SPEED

B-12 (B)

CONNECTOR: B-12 (B)

B-12 (B)

SYMPTOM PROCEDURES

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STEP 2. Check the battery power supply circuit to the
windshield wiper motor. Test at the windshield wiper motor
connector B-12.
(1) Disconnect windshield wiper motor connector B-12 and

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

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

(3) Measure the voltage between terminal 2 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 5.
NO : Go to Step 3.

STEP 3. 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 4.
NO : Repair or replace the damaged component(s). Refer

to GROUP 00E, Harness Connector Inspection

P.00E-2

. The windshield wiper should now stop at the

predetermined park position.

AC205116 AC

CONNECTOR: B-12

B-12 (B)

B-12 (B)

3

2

1

5

4

AC001206

CONNECTOR B-12
(HARNESS SIDE)

AB

AC205116 AD

CONNECTOR: B-12

B-12 (B)

(HARNESS SIDE)

B-12 (B)

1

2

3

4

5

SYMPTOM PROCEDURES

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STEP 4. Check the wiring harness between windshield
wiper motor connector B-12 and the ignition switch (ACC).

NOTE: Also check intermediate connector A-05, D-28, junction
block connectors D-208 and D-221 for loose, corroded, or dam-
aged terminals, or terminals pushed back in the connector. If
intermediate connector A-05, D-28, junction block connector D-
208 and D-221 is damaged, repair or replace the damaged
component(s) as described in GROUP 00E, Harness Connec-
tor Inspection

P.00E-2

.

Q: Is the wiring harness between windshield wiper motor

connector B-12 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(s) may have loose, corroded or damaged
terminals, or terminals pushed back in the connector.
Repair the wiring harness as necessary. The
windshield wiper should now stop at the
predetermined park position.

AC205116 AD

CONNECTOR: B-12

B-12 (B)

(HARNESS SIDE)

B-12 (B)

1

2

3

4

5

AC205142AC

CONNECTOR: A-05

A-05(B)

A-05(B)

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

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STEP 5. Check windshield wiper motor connector B-12 and
front-ECU connector A-08X for loose, corroded or
damaged terminals, or terminals pushed back in the
connector.
Q: Are windshield wiper motor connector B-12 and front-

ECU connector A-08X in good condition?
YES : Go to Step 6.
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. Refer to
GROUP 00E, Harness Connector Inspection

P.00E-

2

. The windshield wiper should now stop at the

predetermined park position.

AC205138

CONNECTOR: A-08X

AC

BATTERY

FRONT-ECU

A-08X

A-08X

AC205116 AC

CONNECTOR: B-12

B-12 (B)

B-12 (B)