Mitsubishi Galant (2004+). Manual - part 258

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-223

DIAGNOSIS

Check that power window sub switches operate normally.
Q: A power window cannot work by using the power 

window main switch. Can you operate the power 
window by using the corresponding power window sub 
switch?
YES : Replace the power window main switch. Check that 

the front or rear passenger's power window can work 
normally by means of power window main switch.

NO :  Refer to Symptom Chart 

P.54B-59

 before resolving 

this trouble.

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-224

KEYLESS ENTRY SYSTEM

GENERAL DESCRIPTION CONCERNING THE KEYLESS ENTRY SYSTEM

M1549022000125

The following ECUs affect the functions and control 
of the keyless entry system.

ALL DOOR LOCK FUNCTION

.

Pressing the transmitter lock button
When the transmitter lock button is pressed, the ETACS-ECU 
energizes its door lock relay to operate all the door lock actua-
tors for 0.25 second, locking all doors.

DRIVER’S DOOR UNLOCK FUNCTION

.

Pressing the transmitter unlock button once
When the transmitter unlock button is pressed once, the 
ETACS-ECU energizes its door unlock relay to operate the 
door lock actuator of the driver’s door for 0.25 seconds, thus 
unlocking only the driver’s door.

FUNCTION

CONTROL 
ECU

All door lock function

Pressing the transmitter lock button

ETACS-ECU

Driver’s door unlock function

Pressing the transmitter unlock button once

ETACS-ECU

All door unlock function

Pressing the transmitter unlock button twice

ETACS-ECU

Trunk unlock function

Pressing the transmitter trunk button

ETACS-ECU

Keyless entry hazard answerback and horn answerback function

ETACS-ECU

Timed locking mechanism

ETACS-ECU

AC202609 AE

ON 

(LOCK)

OFF

Transmitter
lock button

t: 0.25 seconds

OFF

ON

Door lock relay 
output

All door and 
liftgate 
lock actuator  UNLOCK

LOCK

t

AC200819AD

ON 

(UNLOCK)

OFF 

Transmitter
unlock 
button

t: 0.25 second

OFF

ON

Door unlock relay 
output

Driver's door 
lock actuator 

UNLOCK

LOCK

t

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-225

ALL DOOR UNLOCK FUNCTION

.

Pressing the transmitter unlock button twice
When the transmitter unlock button is pressed twice, the 
ETACS-ECU energizes its door unlock relay to operate the 
driver’s door lock actuator and the other door lock actuators for 
0.25 seconds each in succession. All the doors will be 
unlocked.
NOTE: If the timed locking function is available, the doors will 
be locked in 30 seconds after the initial unlocking. Therefore, 
the second door unlocking should be done within 30 seconds 
after that initial unlocking.

TRUNK UNLOCK FUNCTION

.

Pressing the transmitter trunk button
Press the "TRUNK" button twice within 5 seconds and the trunk 
lid will be unlocked.

KEYLESS ENTRY HAZARD ANSWERBACK AND 
HORN ANSWERBACK FUNCTION

.

Keyless entry hazard answerback function*

1

If the keyless entry transmitter is used to send a lock signal to 
the ETACS-ECU, all doors are locked and the hazard warning 
lights flash once. If an unlock signal is sent, the driver's door is 
unlocked first,*

2

 and if a second signal is sent, all doors are 

unlocked. Each time the unlock signal is sent, the hazard warn-
ing lights flash twice.
NOTE: *

1

: The hazard answerback function can be customized 

using the keyless entry transmitter (Refer to Group 42 

P.42-71

, 

Keyless Entry System) or by using the multi center display 
(middle grade type). Refer to 

P.54B-578

.

NOTE: *

2

: Vehicles with a multi center display (middle grade 

type) can be customized so that a single unlock operation will 
unlock all doors. Refer to 

P.54B-578

.

.

AC202610 AF

ON 

(UNLOCK)

OFF

Transmitter
unlock button

t: 0.25 seconds

OFF

ON

Door unlock relay 
output

LOCK

UNLOCK

LOCK

UNLOCK

Driver's door 
lock actuator 

t

t

All door 
lock actuator 

AC209072AC

ON

OFF

OFF

ON

OFF

LOCK

UNLOCK

Illuminated
Not

illuminated

Keyless entry
transmitter switch

Lock relay output

Unlock relay output

Hazard
warning light 
flashing state

SYMPTOM PROCEDURES

TSB Revision

SIMPLIFIED WIRING SYSTEM (SWS)

54B-226

Keyless entry horn answerback function
If the keyless entry transmitter is used to send a lock signal to 
the ETACS-ECU, the first signal locks all doors while the sec-
ond signal sounds the horn once.
NOTE: : The horn answerback function can be customized by 
using the keyless entry transmitter (Refer to Group 42 

P.42-71

, 

Keyless Entry System) or by using the multi center display 
(middle grade type). Refer to 

P.54B-578

.

Timed locking mechanism

.

After unlocking the doors with the keyless entry transmitter, if 
no doors are opened, if the ignition key is not inserted or if the 
locking function is not operated, the ETACS-ECU automatically 
locks the doors in 30 seconds.
NOTE: The timed locking function can be customized on vehi-
cles equipped with a multi center display (middle grade type). 
Refer to 

P.54B-578

.

AC209073AC

LOCK

OFF

LOCK

UNLOCK

ON

OFF

Keyless entry
transmitter switch

All door 
lock actuator

Lock relay output

Horn relay output

ON

OFF