Mitsubishi Galant 9G. Manual - part 98

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-388

NOTE: Also check junction block connector C-204 for loose, 
corroded, or damaged terminals, or terminals pushed back in 
the connector. If junction block connector C-204 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 rear combination light 

(LH) connector F-09 (terminal 1) and ETACS-ECU 
connector C-219 (terminal 14) in good condition?
YES : Replace the rear combination light socket assembly 

(LH). Verify that the turn-signal lights illuminate 
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 turn-signal lights illuminate normally.

STEP 20. Check rear combination light (RH) connector 
F-03 for loose, corroded or damaged terminals, or 
terminals pushed back in the connector.
Q: Is rear combination light (RH) connector F-03 in good 

condition?
YES : Go to Step 21.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Verify that the turn-signal lights illuminate 

normally.

STEP 21. Check the rear turn-signal light bulb (RH).
(1) Remove the rear turn-signal (RH) light bulb.
(2) Verify that the rear turn-signal light bulb (RH) is not 

damaged or burned out.

Q: Is the rear turn-signal (RH) light bulb in good condition?

YES : Go to Step 22.
NO :  Replace the rear turn-signal (RH) light bulb. Verify 

that the turn-signal lights illuminate normally.

AC305415AJ

CONNECTOR: C-204

HARNESS SIDE

JUNCTION BLOCK

(FRONT VIEW)

AC305260

AH

CONNECTOR: F-03

HARNESS SIDE

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-389

STEP 22. Check the ground circuit to the rear turn-signal 
light (RH). Measure the resistance at rear combination light 
(RH) connector F-03.
(1) Disconnect rear combination light (RH) connector F-03 and 

measure the resistance available at the 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 24.
NO :  Go to Step 23.

STEP 23. Check the wiring harness between rear 
combination light (RH) connector F-03 (terminal 2) and 
ground.
Q: Is the wiring harness between rear combination light 

(RH) connector F-03 (terminal 2) and ground in good 
condition?
YES : Replace the rear combination light socket assembly 

(RH). Verify that the turn-signal lights illuminate 
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 turn-signal lights illuminate normally.

AC305260

AH

CONNECTOR: F-03

HARNESS SIDE

AC209364

CONNECTOR F-03
(HARNESS SIDE)

HD

AC305260

AH

CONNECTOR: F-03

HARNESS SIDE

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-390

STEP 24. Check ETACS-ECU connector C-219 for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.
Q: Is ETACS-ECU connector C-219 in good condition?

YES : Go to Step 25.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Verify that the turn-signal lights illuminate 

normally.

STEP 25. Check the wiring harness between rear 
combination light (RH) connector F-03 (terminal 5) and 
ETACS-ECU connector C-219 (terminal 9).

AC305413 AG

CONNECTOR: C-219

JUNCTION BLOCK SIDE

JUNCTION BLOCK

(REAR VIEW)

AC305413 AG

CONNECTOR: C-219

JUNCTION BLOCK SIDE

JUNCTION BLOCK

(REAR VIEW)

AC305260

AH

CONNECTOR: F-03

HARNESS SIDE

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-391

NOTE: Also check junction block connector C-204 for loose, 
corroded, or damaged terminals, or terminals pushed back in 
the connector. If junction block connector C-204 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 rear combination light 

(RH) connector F-03 (terminal 5) and ETACS-ECU 
connector C-219 (terminal 9) in good condition?
YES : Replace the rear combination light socket assembly 

(RH). Verify that the turn-signal lights illuminate 
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 turn-signal lights illuminate normally.

INSPECTION PROCEDURE I-4: The turn-signal light indicator does not illuminate normally.

NOTE: This troubleshooting procedure requires the 
use of scan tool MB991958 and SWS monitor kit 
MB991813. For details on how to use the SWS mon-
itor, refer to "How to use SWS monitor 

P.54B-15

."

.

CIRCUIT OPERATION

At the same time that the turn-signal lights are illumi-
nated, the ETACS-ECU sends a signal to illuminate 
the turn-signal light indicator via the CAN bus line.

.

TECHNICAL DESCRIPTION (COMMENT)

If the turn-signal indicator does not illuminate nor-
mally, connector(s), wiring harness in the CAN bus 
lines, the ETACS-ECU or the combination meter 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 combination meter may be defective

• The ETACS-ECU may be defective

.

AC305415AJ

CONNECTOR: C-204

HARNESS SIDE

JUNCTION BLOCK

(FRONT VIEW)

INPUT SIGNAL

ETACS-
ECU

COMBINATION
METER

CAN COMMUNICATION LINE
(CAN_L LINE)

CAN COMMUNICATION LINE
(CAN_H LINE)

· 

HAZARD WARNING LIGHT 

SWITCH

 

· TURN-SIGNAL 

LIGHT 

SWITCH

Turn-signal Lights Indicator Light Circuit