Mitsubishi Galant (2004+). Manual - part 273

SYMPTOM PROCEDURES

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SIMPLIFIED WIRING SYSTEM (SWS)

54B-283

TECHNICAL DESCRIPTION (COMMENT)
If the windshield wipers do not stop at predetermined 
park position, the windshield wiper motor or the 
front-ECU may be defective.

.

TROUBLESHOOTING HINTS

• The wiring harness or connectors may have 

loose, corroded, or damaged terminals, or termi-
nals pushed back in the connector

• The windshield wiper motor may be defective

• The front-ECU may be defective

DIAGNOSIS

Required Special Tool:

• MB991223: Harness Set

STEP1. Check windshield wiper motor connector A-03 for 
loose, corroded or damaged terminals, or terminals 
pushed back in the connector.

Q: Is windshield wiper motor connector A-03 in good 

condition?
YES : Go to Step 2.
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.

AC305206

A-03 (B)

HARNESS SIDE

CONNECTOR: A-03

AH

SYMPTOM PROCEDURES

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SIMPLIFIED WIRING SYSTEM (SWS)

54B-284

STEP 2. Check the windshield wiper motor.

(1) Disconnect windshield wiper motor connector A-03.

(2) Connect the vehicle battery to the windshield wiper motor 

connector as shown, 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 the battery is connected as shown, 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 3.
NO :  Replace the windshield wiper motor. The windshield 

wiper should now stop at the predetermined park 
position.

AC305206

A-03 (B)

HARNESS SIDE

CONNECTOR: A-03

AH

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AC306755

1

2

3

4

5

1

2

3

4

5

STOP POSITION CHECK

(B) AUTOMATICAL STOP

(A) LOW SPEED

AB

SYMPTOM PROCEDURES

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SIMPLIFIED WIRING SYSTEM (SWS)

54B-285

STEP 3. Check the ignition switch (ACC) circuit to the 
windshield wiper motor. Measure the voltage at windshield 
wiper motor connector A-03.

(1) Disconnect windshield wiper motor connector A-03 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 3 and ground.

• The voltage should measure 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 4.

STEP 4. Check the wiring harness between windshield 
wiper motor connector A-03 (terminal 3) and the ignition 

switch (ACC).

AC305206

A-03 (B)

HARNESS SIDE

CONNECTOR: A-03

AH

AC209365

4

5

2

3

1

AC209365

AC209365

AC209365CM

CONNECTOR A-03
(HARNESS SIDE)

AC305206

A-03 (B)

HARNESS SIDE

CONNECTOR: A-03

AH

SYMPTOM PROCEDURES

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SIMPLIFIED WIRING SYSTEM (SWS)

54B-286

NOTE: Also check intermediate connector C-29 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the 
connector. If intermediate connector C-29 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 windshield wiper motor 

connector A-03 (terminal 3) 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. Verify that 
the windshield wiper works normally.

STEP 5. Check front-ECU connector A-12X for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.

Q: Is front-ECU connector A-12X 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

. The windshield wiper should stop at the 

predetermined park position.

AC305231AI

CONNECTOR: C-29

AC305977

CONNCTOR: A-12X

AI

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RELAY BOX SIDE