Mitsubishi Galant 9G. Manual - part 397

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-10

).

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

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

and unlocked.

NOTE: The adjustment function allows you to change the 
horn answerback setting as follows. Prior to that check, con-
firm which setting is activated.

.

a. Horn: Sounds once when the lock button is pressed.
b. Horn: Sounds once when the lock button is pressed (ini-

tial setting).

c. Horn: Does not sound.

KEYLESS ENTRY SYSTEM TIMER LOCK 
FUNCTION INSPECTION

M1428004000149

If the doors are not locked within 30 seconds after the unlock 
button is pressed, refer to GROUP 54B, SWS Diagnosis 

P.54B-10

.

NOTE: If either of the doors is opened or the key is inserted in 
the ignition switch within that 30-second period, the timer lock 
function will be cancelled.
NOTE: The adjustment function allows you to change the timer 
lock period from 30 seconds (initial setting) to 60, 120 or 180 
seconds. Prior to this inspection, confirm which setting is acti-
vated.

ENABLING/DISABLING THE ANSWERBACK 
FUNCTION

M1428003200225

When the doors are locked or unlocked by using the transmit-
ter, the dome light will flash/illuminate, the turn-signal lights will 
flash (hazard answerback), or the horn will sound (horn 
answerback) to inform the driver.
The hazard answerback and horn answerback functions can be 
enabled or disabled according to the following procedure:

ENABLING/DISABLING THE HAZARD 
ANSWERBACK FUNCTION

.

How to adjust hazard answerback when the trans-
mitter is used to lock doors

1. Remove the ignition key.
2.  Push the ”unlock” button and then push the ”lock“ button 

within 4 seconds to 10 seconds.

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3. Release the ”lock” button within 10 seconds after Step 2 and 

then release the “unlock” button. The ETACS-ECU tone 
alarm will sound, indicating that the hazard answerback 
function can be enabled or disabled when the doors are 
locked.

• Enable the hazard answerback function when the 

doors are locked: The ETACS-ECU tone alarm will 
sound once.

• Disable the hazard answerback function when the 

doors are locked: The ETACS-ECU tone alarm will 
sound twice.

.

How to adjust hazard answerback when the 
transmitter is used to unlock doors

1. Remove the ignition key.
2.  Push the ”unlock” button and then push the ”lock“ button 

within 4 seconds to 10 seconds.

3. Release the ”lock” button within 10 seconds after Step 2 and 

then release the “unlock” button. The ETACS-ECU tone 
alarm will sound, indicating that the hazard answerback 
function can be enabled or disabled when the door are 
unlocked.

• Enable the hazard answerback function when the 

doors are unlocked: The ETACS-ECU tone alarm 
will sound once.

• Disable the hazard answerback function when the 

doors are unlocked: The ETACS-ECU tone alarm 
will sound twice.

ENABLING/DISABLING THE HORN 
ANSWERBACK FUNCTION

.

1. Remove the ignition key.
2.  Push the ”unlock” button and then push the ”lock“ button 

within 4 seconds to 10 seconds.

3. Release the ”lock” button within 10 seconds after Step 2 and 

then release the “unlock” button. The ETACS-ECU tone 
alarm will sound, indicating that the horn answerback 
function can be enabled or disabled.

• Enable the horn answerback function*: The 

ETACS-ECU tone alarm will sound once.

• Disable the horn answerback function: The 

ETACS-ECU tone alarm will sound twice.

• Enable the horn answerback function**: The 

ETACS-ECU tone alarm will sound three times.

NOTE: 

.

*: The horn will sound if "LOCK" button is pressed with the 

doors locked.

**: The horn will sound if the doors are locked with the key-

less entry system.

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HOW TO REGISTER SECRET CODE

M1428001000593

Required Special Tools:

• MB991958: MUT-III Sub Assembly

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

• MB991910: MUT-III Main harness A

Each individual secret code is registered inside the transmitter, 
and so it is necessary to resister these codes with the 
EEPROM inside the receiver in the following cases.

• When the transmitter or ETACS-ECU is replaced

• If more transmitters are to be used

• If it appears that a problem is occurring because of faulty 

registration of a code.

A maximum of four different codes can be stored in the 
EEPROM memory (four different transmitters can be used). 
When the code for the first transmitter is registered, the previ-
ously registered codes for all transmitters are cleared. There-
fore, if you are using four transmitters or are adding more 
transmitters, the codes for all transmitters must be registered at 
the same time.

WHEN SPECIAL TOOL MB991824 (V.C.I.) IS USED

.

1. Check that the doors lock normally when the key is used.
2. Insert the ignition key.

CAUTION

To prevent damage to special tool MB991824 (V.C.I.), 
always turn the ignition switch to “LOCK” (OFF) position 
before connecting or disconnecting special tool MB991824 
(V.C.I.).
3. Connect special tool MB991824 (V.C.I.) to the data link 

connector.

AC306728

AB

MB991910

DATA LINK

CONNECTOR

MB991824