Mitsubishi Galant (2004+). Manual - part 342

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-559

STEP 13. Check the wiring harness between front power 
window sub switch connector E-04 (terminals 1 and 3) and 
ETACS-ECU connector C-217 (terminals 33 and 34).

NOTE: Also check intermediate connector C-12 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the 
connector. If intermediate connector C-12 is damaged, repair or 
replace the connector as described in GROUP 00E, Harness 
Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between front power window sub 

switch connector E-04 (terminal 1 and 3) and 
ETACS-ECU connector C-217 (terminals 33 and 34) in 
good condition?
YES : Replace the ETACS-ECU. If the central door locking 

system works normally, input signal from the door lock 
switch (front power window sub switch) should be 
normal.

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. If the central 
door locking system works normally, input signal from 
the door lock switch (front power window sub switch) 
should be normal.

AC305413AH

CONNECTOR: C-217

HARNESS SIDE

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JUNCTION BLOCK

(REAR VIEW)

AC305333

HARNESS SIDE

CONNECTOR: E-04

AK

AC305233

CONNECTOR:C-12

AB

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-560

INSPECTION PROCEDURE N-7: ETACS-ECU does not receive any signal from the trunk lid latch 
assembly.

.

CIRCUIT OPERATION
The ETACS-ECU operates the trunk light according 
to signal from the trunk lid latch assembly.

.

TECHNICAL DESCRIPTION (COMMENT)
The trunk lid latch assembly input signal is used to 
operate the trunk light. If the signal fails, this function 
will not work normally.

.

TROUBLESHOOTING HINTS

• The trunk lid latch assembly may be defective

• The ETACS-ECU may be defective

• The wiring harness or connectors may have 

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

TRUNK LID LATCH 
ASSEMBLY

ETACS-ECU

Trunk Lid Latch Assembly Input Circuit

AC305231BA

CONNECTOR: C-28

AC305413

CONNECTOR: C-217

AK

JUNCTION BLOCK

(REAR VIEW)

AC305260

AC

CONNECTOR: F-05

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-561

DIAGNOSIS

.

Required Special Tool:

• MB991223: Harness Set

STEP 1. Check trunk lid latch assembly connector F-05 for 
loose, corroded or damaged terminals, or terminals 
pushed back in the connector. 

Q: Is trunk lid latch assembly connector F-05 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

. If the functions described in "CIRCUIT 

OPERATION" work normally, the input signal from the 
trunk lid latch assembly should be normal.

STEP 2. Check the trunk lid latch assembly.

Remove the trunk lid latch assembly. Refer to GROUP 42, 
Trunk lid, Trunk lid latch inspection 

P.42-66

.

Q: Is the trunk lid latch assembly in good condition?

YES : Go to Step 3.
NO :  Replace the trunk lid latch assembly. The input signal 

from the trunk lid latch assembly should be able to be 
checked and the functions, which are described in the 
"Technical Description (comment)," should work 
normally.

STEP 3. Check ETACS-ECU connector C-217 for loose, 
corroded or damaged terminals, or terminals pushed back 
in the connector.

Q: Is ETACS-ECU connector C-217 in good condition?

YES : Go to Step 4.
NO :  Repair or replace the damaged component(s). Refer 

to GROUP 00E, Harness Connector Inspection 

P.00E-2

. If the functions described in "CIRCUIT 

OPERATION" work normally, the input signal from the 
trunk lid latch assembly should be normal.

AC305260

CONNECTOR: F-05

AI

HARNESS SIDE

LEVER POSITION TESTER 

CONNECTION

SPECIFIED 
CONDITION

ON (Latch open)

2 

− Ground 

Less than 2 ohms

OFF (Latch shut)

2 

− Ground 

Open circuit

AC305827

1

2

AB

<FRONT 
VIEW>

ON

OFF

LEVER

AC305413AH

CONNECTOR: C-217

HARNESS SIDE

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JUNCTION BLOCK

(REAR VIEW)

INPUT SIGNAL PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-562

STEP 4. Check the wiring harness between trunk lid latch 
assembly connector F-05 (terminal 2) and ETACS-ECU 
connector C-217 (terminal 37).

NOTE: Also check intermediate connector C-28 for loose, cor-
roded, or damaged terminals, or terminals pushed back in the 
connector. If intermediate connector C-28 is damaged, repair or 
replace the connector as described in GROUP 00E, Harness 
Connector Inspection 

P.00E-2

.

Q: Is the wiring harness between trunk lid latch assembly 

connector F-05 (terminal 2) and ETACS-ECU connector 
C-217 (terminal 37) in good condition?
YES : Replace the ETACS-ECU. If the functions described 

in "CIRCUIT OPERATION" work normally, the input 
signal from the trunk lid latch assembly should be 
normal.

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. If the 
functions described in "CIRCUIT OPERATION" work 
normally, the input signal from the trunk lid latch 
assembly should be normal.

AC305413AH

CONNECTOR: C-217

HARNESS SIDE

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JUNCTION BLOCK

(REAR VIEW)

AC305260

CONNECTOR: F-05

AI

HARNESS SIDE

AC305231AE

CONNECTOR:C-28