Mitsubishi Galant (2004+). Manual - part 293

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-363

STEP 8. Check headlight (LOW: RH) connector A-32 for 
loose, corroded or damaged terminals, or terminals 
pushed back in the connector.

Q: Is headlight (LOW: RH) connector A-32 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

. Check that the headlight (LOW: RH) 

illuminates normally.

STEP 9. Check the headlight bulb (LOW: RH).
(1) Remove the headlight bulb (LOW: RH).
(2) Verify that the headlight bulb (LOW: RH) is not damaged or 

burned out.

Q: Is the headlight bulb (LOW: RH) in good condition?

YES : Go to Step 10.
NO :  Replace the headlight bulb (LOW: RH). Verify that the 

headlight (LOW: RH) illuminates normally.

STEP 10. Check the ground circuit to the headlight (LOW: 
RH). Measure the resistance at headlight (LOW: RH) 
connector A-32.

(1) Disconnect headlight (LOW: RH) connector A-32 and 

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 be 2 ohms or less.

Q: Is the measured resistance 2 ohms or less?

YES : Go to Step 12.
NO :  Go to Step 11.

AC305206

A-32 (BR)

HARNESS SIDE

CONNECTOR: A-32

AO

AC305206

A-32 (BR)

HARNESS SIDE

CONNECTOR: A-32

AO

AC209364GT

CONNECTOR A-32
(HARNESS SIDE)

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-364

STEP 11. Check the wiring harness between headlight 
(LOW: RH) connector A-32 (terminal 2) and ground.

Q: Is the wiring harness between headlight (LOW: RH) 

connector A-32 (terminal 2) and ground in good 
condition?
YES : Replace the headlight socket (LOW: RH). Verify that 

the headlight (LOW: RH) illuminates normally.

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 headlight (LOW: RH) illuminates normally.

STEP 12. Check front-ECU connector A-11X for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.

Q: Is front-ECU connector A-11X in good condition?

YES : Go to Step 13.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Check that the headlight (LOW: RH) 

illuminates normally.

STEP 13. Check the wiring harness between headlight 
(LOW: RH) connector A-32 (terminal 1) and front-ECU 
connector A-11X (terminal 6).

Q: Is the wiring harness between headlight (LOW: RH) 

connector A-32 (terminal 1) and front-ECU connector 
A-11X (terminal 6) 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 headlight (LOW: RH) illuminates normally.

AC305206

A-32 (BR)

HARNESS SIDE

CONNECTOR: A-32

AO

AC305977AH

CONNECTOR: A-11X

RELAY BOX SIDE 

AC305977AH

CONNECTOR: A-11X

RELAY BOX SIDE 

AC305206

A-32 (BR)

HARNESS SIDE

CONNECTOR: A-32

AO

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-365

STEP 14. Check headlight (HIGH: LH) connector A-21 for 
loose, corroded or damaged terminals, or terminals 
pushed back in the connector.

Q: Is headlight (HIGH: LH) connector A-21 in good 

condition?
YES : Go to Step 15.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Check that the headlight (HIGH: LH) 

illuminates normally.

STEP 15. Check the headlight bulb (HIGH: LH).
(1) Remove the headlight bulb (HIGH: LH).
(2) Verify that the headlight bulb (HIGH: LH) is not damaged or 

burned out.

Q: Is the headlight bulb (HIGH: LH) in good condition?

YES : Go to Step 16.
NO :  Replace the headlight bulb (HIGH: LH). Verify that the 

headlight (HIGH: LH) illuminates normally.

STEP 16. Check the ground circuit to the headlight (HIGH: 
LH). Measure the resistance at headlight (HIGH: LH) 
connector A-21.

(1) Disconnect headlight (HIGH: LH) connector A-21 and 

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 be 2 ohms or less.

Q: Is the measured resistance 2 ohms or less?

YES : Go to Step 18.
NO :  Go to Step 17.

AC305210

A-21 (B)

HARNESS SIDE

CONNECTOR: A-21

AO

AC305210

A-21 (B)

HARNESS SIDE

CONNECTOR: A-21

AO

AC209364GQ

CONNECTOR A-21
(HARNESS SIDE)

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-366

STEP 17. Check the wiring harness between headlight 
(HIGH: LH) connector A-21 (terminal 2) and ground.

Q: Is the wiring harness between headlight (HIGH: LH) 

connector A-21 (terminal 2) and ground in good 
condition?
YES : Replace the headlight socket (HIGH: LH). Verify that 

the headlight (HIGH: LH) illuminates normally.

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 headlight (HIGH: LH) illuminates normally.

STEP 18. Check front-ECU connector A-11X for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.

Q: Is front-ECU connector A-11X in good condition?

YES : Go to Step 19.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Check that the headlight (HIGH: LH) 

illuminates normally.

STEP 19. Check the wiring harness between headlight 
(HIGH: LH) connector A-21 (terminal 1) and front-ECU 
connector A-11X (terminal 10).

Q: Is the wiring harness between headlight (HIGH: LH) 

connector A-21 (terminal 1) and front-ECU connector 
A-11X (terminal 10) 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 headlight (HIGH: LH) illuminates normally.

AC305210

A-21 (B)

HARNESS SIDE

CONNECTOR: A-21

AO

AC305977AH

CONNECTOR: A-11X

RELAY BOX SIDE 

AC305977AH

CONNECTOR: A-11X

RELAY BOX SIDE 

AC305210

A-21 (B)

HARNESS SIDE

CONNECTOR: A-21

AO