Mitsubishi Galant (2004+). Manual - part 572

TRUNK LID

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TRUNK LID LATCH SWITCH CONTINUITY CHECK

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

KEYLESS ENTRY SYSTEM

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KEYLESS ENTRY SYSTEM

GENERAL DESCRIPTION

M1428000100229

• Antenna and receiver are incorporated in the 

ETACS-ECU.

• ID code can be registered by using scan tool 

MB991958 (MUT-III sub assembly).

• Transmitter is a key holder type, which incorpo-

rates lock button, unlock button, trunk button and 
panic button <Vehicles with panic alarm system>.

• When the transmitter unlock button is pressed 

once, the driver's door will be unlocked. If the but-
ton is pressed twice, all the doors will be 
unlocked. The adjustment function also allows 
you to open all the doors by pressing the unlock 
button only once. For further details on using the 
multi-center display (middle grade type) to adjust 
the unlock operation, refer to GROUP 54B, 
On-vehicle Service 

P.54B-578

.

• When the transmitter is operated, the answer-

back function will work as follows:

• The answerback operation can be altered as fol-

lows:

NOTE: Enabling/disabling the hazard warning 
light flashing, the horn sounding in accordance 
with the answerback function. For further details 
on using the transmitter to adjust answerback, 

P.42-71

 see the section below. For further details 

on using the multi-center display (middle grade 
type) to adjust answerback, refer to GROUP 54B, 
On-vehicle Service 

P.54B-578

.

ITEM

OPERATION
DOORS LOCKED

DOORS UNLOCKED

Dome light

Flashes once

Illuminates for 15 seconds

Turn-signal lights (RH and LH)

Flashes once

Flashes twice

Horn

Sounds once when the lock button 
is pressed with all the doors locked

-

ITEM

ADJUSTMENT ITEM

ADJUSTMENT DETAIL

Keyless entry system 
confirmation by turn 
signal lights

Adjustment of hazard answerback 
when the transmitter is used to 
lock doors

When adjusting hazard answerback after the 
doors are locked with the transmitter, the 
following flashing conditions can be selected.

a. Flash (default)
b. No flash

Adjustment of hazard answerback 
when the transmitter is used to 
unlock doors

When adjusting hazard answerback after the 
doors are unlocked with the transmitter, the 
following flashing conditions can be selected.

a. Flash (default)
b. No flash

Keyless entry system 
confirmation by horn

Adjustment of horn answerback 
when the transmitter is used to 
lock doors

When adjusting horn answerback after the 
doors are locked with the transmitter, the 
following horn conditions can be selected.

a. Horn sounds
b. Horn sounds if doors are already locked 

(default)

c. Horn does not sound

KEYLESS ENTRY SYSTEM

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• If none of the doors is opened or the ignition key 

is not inserted in the ignition switch within 30 sec-
onds after the doors are unlocked using the 
transmitter, the ETACS-ECU will relock the doors 
automatically. This is called "Timer lock function." 
This timer lock function prevents accidental 
unlocking of doors. The adjustment function 
allows you to change the timer lock period from 

30 seconds (default setting) to 60, 120 or 180 
seconds. For further details on using the 
multi-center display (middle grade type) to adjust 
the timer lock period, refer to GROUP 54B, 
On-vehicle Service 

P.54B-578

.

NOTE: The timer lock period begins when the doors 
are unlocked, and ends when the doors is relocked 
automatically.

KEYLESS ENTRY SYSTEM DIAGNOSIS

M1428000700298

The keyless entry system is controlled by the Simpli-
fied Wiring System (SWS). Refer to GROUP 54B, 
SWS Diagnosis 

P.54B-59

.

SPECIAL TOOL

M1428000600291

TOOL

TOOL NUMBER AND 
NAME

SUPERSESSION

APPLICATION

MB991958

A: MB991824
B: MB991827
C: MB991910
D: MB991911
E: MB991914
F: MB991825
G: MB991826

MUT-III Sub Assembly

A: Vehicle communication 

interface (V.C.I.)

B: MUT-III USB cable
C: MUT-III main harness A 

(Vehicles with CAN 
communication system)

D: MUT-III main harness B 

(Vehicles without CAN 
communication system)

E: MUT-III main harness C 

(for Chrysler models 
only)

F: MUT-III measurement 

adapter Harness

G: MUT-III trigger harness

MB991824-KIT
NOTE: G: MB991826 
MUT-III Trigger Harness is 
not necessary when 
pushing V.C.I. ENTER key.

For registration of secret 
code

CAUTION

For vehicles with CAN 
communication, use 
MUT-III main harness A to 
send simulated vehicle 
speed. If you connect 
MUT-III main harness B 
instead, the CAN 
communication does not 
function correctly.

MB991910

MB991826

MB991958

MB991911

MB991914

MB991824

MB991827

MB991825

DO NOT USE

A

B

C

D

E

F

G

DO NOT USE

KEYLESS ENTRY SYSTEM

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ON-VEHICLE SERVICE

HOW TO REPLACE THE TRANSMITTER 
BATTERY

M1428000900269

CAUTION

Do not allow water or dust to enter the inside of the trans-
mitter when it is opened. Also, do not touch the precision 
electronic device.
1. Remove the set screw to remove the battery from the 

transmitter.

2. Install a battery with its (+) side face-down.

Battery required for replacement: Coin type battery 
CR2032

3. Insert the claw first, and reassemble the transmitter.
4. Verify that the keyless entry system operates.

KEYLESS ENTRY SYSTEM INSPECTION

M1428001400104

Check the following items. If defective, refer to GROUP 54B, 
SWS Diagnosis 

P.54B-9

).

1. Operate the transmitter to check that the doors can be 

locked and unlocked.
NOTE: The adjustment function allows you to change the 
unlock operation setting as follows. Prior to that check, con-
firm which setting is activated.

.

a. When the unlock button is pressed once, the driver's 

door will be unlocked. Then when the button is pressed 
once again, all the doors will be opened (initial setting).

b. When the unlock button is pressed only once, all the 

doors will be opened.

2. Press the trunk lid button of transmitter twice (press once, 

and then press again within 5 seconds) and confirm that the 
trunk lid opens.

3. Operate the transmitter to check that the answerback 

function works in response to doors locking/unlocking.
NOTE: The adjustment function allows you to change the 
hazard answerback setting as follows. Prior to that check, 
confirm which setting is activated.

.

a. Turn-signal lights: Flash once when doors are locked, 

and twice when unlocked (initial setting)

b. Turn-signal lights: Flash once when doors are locked, 

but does not flash when unlocked.

c. Turn-signal lights: Do not flash when doors are locked, 

but flash twice when unlocked.

AC000509

BATTERY

CLAW

SCREW

AB