Mitsubishi Galant (2004+). Manual - part 243

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-163

STEP 17. 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 18.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. Verify that all the doors can be locked and 

unlocked normally.

STEP 18. Check the wiring harness between ETACS-ECU 
connector C-219 (terminals 12 and 13) and rear door lock 

actuator (RH) connector E-08 (terminals 6 and 4).

AC305413 AG

CONNECTOR: C-219

JUNCTION BLOCK SIDE

JUNCTION BLOCK

(REAR VIEW)

AC305413 AG

CONNECTOR: C-219

JUNCTION BLOCK SIDE

JUNCTION BLOCK

(REAR VIEW)

AC305333

E-08 (B)

HARNESS SIDE

CONNECTOR: E-08

AI

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-164

NOTE: Also check junction block connector C-204 and inter-
mediate connectors D-36 for loose, corroded, or damaged ter-
minals, or terminals pushed back in the connector. If junction 
block connector C-204 or intermediate connector D-36 is dam-
aged, repair or replace the damaged component(s) as 
described in GROUP 00E, Harness Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between ETACS-ECU connector 

C-219 (terminals 12 and 13) and rear door lock actuator 
(RH) connector E-08 (terminals 6 and 4) in good 
condition?
YES : Replace the ETACS-ECU. Verify that all the doors 

can be locked and unlocked 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 all 
the doors can be locked and unlocked normally.

AC305415AJ

CONNECTOR: C-204

HARNESS SIDE

JUNCTION BLOCK

(FRONT VIEW)

AC305264

AB

CONNECTOR: D-36

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-165

INSPECTION PROCEDURE C-3: Central Door Locking System: All the Doors do not Lock or Unlock 
with just the Door Lock Switch Operation.

.

TECHNICAL DESCRIPTION (COMMENT)
The door lock switch (incorporated in the power win-
dow main switch and front power window sub switch) 
or the ETACS-ECU may be defective.

.

TROUBLESHOOTING HINTS

• Trouble in input signal system

• 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

DIAGNOSIS

Required Special Tools:

• MB991223: Harness Set

• MB991958: Scan Tool (MUT-III Sub Assembly)

• MB991824: Vehicle Communication Interface (V.C.I.)

• MB991827: MUT-III USB Cable

• MB991910: MUT-III Main Harness A

DOOR LOCK 
ACTUATOR

INPUT SIGNAL

·DRIVER'S SIDE DOOR LOCK SWITCH

FUSIBLE 
LINK

1

JUNCTION BLOCK SIDE

JUNCTION BLOCK

ETACS-ECU

·FRONT PASSENGER'S SIDE
 DOOR LOCK SWITCH

Central Door Lock (Door Lock Switch) Circuit

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-166

Check the input signal (by using the pulse check mode of 
the monitor).

Check the input signals from the door lock switch (incorporated 
in the power window main switch and front power window sub 
switch):

CAUTION

To prevent damage to scan tool MB991958, always turn the 
ignition switch to the "LOCK" (OFF) position before con-
necting or disconnecting scan tool MB991958.
(1) Connect the special tool. Refer to "How to connect SWS 

monitor 

P.54B-13

."

(2) When the driver's or the front passenger's door lock switch 

is moved from "LOCK" to "UNLOCK" and vice versa, check 
if scan tool MB991958 sounds or not.

(3) Operate scan tool MB991958 according to the procedure 

below to display "Pulse check."
a. Select "Interactive Diagnosis."
b. Select "System Select."
c. Select "SWS."
d. Select "Pulse Checking."

Q: Does scan tool MB991958 sound when the driver's or 

the front passenger's door lock switch is moved from 
"LOCK" to "UNLOCK" and vice versa?
YES : Replace the ETACS-ECU. Check that all the doors 

should be locked and unlocked by the door lock 
switch.

NO :  Refer to Inspection Procedure N-6 "ETACS-ECU 

does not receive any signal from the door lock switch 
(incorporated in the power window main switch and 
front power window sub switch) 

P.54B-550

."

AC305412

AB

MB991910

DATA LINK

CONNECTOR

MB991824

MB991827