Mitsubishi Galant (2004+). Manual - part 312

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-439

STEP 4. 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 5.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Verify that the dome light illuminates 

normally.

STEP 5. Check the wiring harness between map light 
assembly connector D-02 (terminal 1) <without sunroof> 

or overhead console assembly connector D-03 (terminal 1) 
<with sunroof> and ETACS-ECU connector C-219 (terminal 
6).

AC305413 AG

CONNECTOR: C-219

JUNCTION BLOCK SIDE

JUNCTION BLOCK

(REAR VIEW)

AC305413 AG

CONNECTOR: C-219

JUNCTION BLOCK SIDE

JUNCTION BLOCK

(REAR VIEW)

AC305265

AB

CONNECTORS: D-02, D-03

D-02
D-03

D-02

D-03

HARNESS SIDE

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-440

NOTE: Also check junction block connector C-205 for loose, 
corroded, or damaged terminals, or terminals pushed back in 
the connector. If junction block connector C-205 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 map light assembly 

connector D-02 (terminal 1) <without sunroof> or 
overhead console assembly connector D-03 (terminal 1) 
<with sunroof> and ETACS-ECU connector C-219 
(terminal 6) in good condition?
YES : Replace the ETACS-ECU. Verify that the dome light 

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 dome light illuminates normally.

AC305415

C-205

CONNECTOR: C-205

AT

JUNCTION BLOCK
(FRONT VIEW)

HARNESS SIDE

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-441

INSPECTION PROCEDURE K-2: Interior Light: The front dome light, rear dome light or trunk light do 
not illuminate or go out normally.

JUNCTION BLOCK

ETACS-
ECU

TRUNK
LIGHT

MAP LIGHT
ASSEMBLY

OVERHEAD
CONSOLE
ASSEMBLY

REAR DOME
LIGHT

JUNCTION 
BLOCK SIDE

NOTE

WITHOUT SUNROOF
WITH SUNROOF

Interior Light Circuit

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-442

.

CIRCUIT OPERATION
The ETACS-ECU operates the dome light according 
to the following signals:

• Ignition switch (IG1): ON or OFF

• Key reminder switch: ON or OFF

• Door switches: ON or OFF

• Trunk lid latch assembly: ON or OFF

• Driver’s door lock actuator switch: LOCK or 

UNLOCK

.

TECHNICAL DESCRIPTION (COMMENT)
Is the dome light does not flash normally, a 
burned-out dome light bulb, the input circuits from 
the switches described in "CIRCUIT OPERATION", 
the power supply line to the switches or the 
ETACS-ECU may be defective.

.

TROUBLESHOOTING HINTS

• The front dome light bulb may be defective

• The rear dome light bulb may be defective

• The trunk light bulb may be defective

• The wiring harness or connectors may have 

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

• The ETACS-ECU may be defective

AC305231BA

CONNECTOR: C-28

AC305415AL

CONNECTOR: C-204

JUNCTION BLOCK

(FRONT VIEW)

AC207121

CONNECTORS : C-218, C-219

C-218(GR)

C-219

AG

JUNCTION BLOCK

(REAR VIEW)

AC305264

CONNECTORS: D-02, D-03, D-37 D-02

D-03

AH

D-37

AC305268

AE

CONNECTORS: D-07, D-10

D-07

D-10