Mitsubishi Lancer Evolution IX. Manual - part 370

KEYLESS ENTRY SYSTEM

BODY

42-41

TROUBLESHOOTING

M1428000700287

The keyless entry system is controlled by the Smart 
Wiring System (SWS). For troubleshooting, refer to 
GROUP 54B, Troubleshooting 

P.54B-13

 or GROUP 

54C, Troubleshooting 

P.54C-4

.

ON-VEHICLE SERVICE

KEYLESS ENTRY SYSTEM CHECK

M1428001400137

Check the system as described below. If the system 
does not work, carry out troubleshooting. Refer to 
GROUP 54B, Troubleshooting 

P.54B-13

 or GROUP 

54C, Troubleshooting 

P.54C-4

.

• Operate the transmitter to check that the doors 

can be locked and unlocked.

• Operate the transmitter to check that the answer-

back function works in response to doors lock-
ing/unlocking.

NOTE: The adjustment function allows you to 

change the answerback setting as follows. Prior 
to that check, confirm which setting is activated.

.

•

The hazard warning lamp flashes twice when 
locked and once when unlocked. The room 
lamp flashes twice when locked and illumi-
nates for 15 seconds when unlocked.

•

The hazard warning lamp do not flash when 
locked and flash once when unlocked. The 
room lamp flashes twice when locked and illu-
minates for 15 seconds when unlocked.

•

The hazard warning lamp flashes twice when 
locked and do not flash when unlocked. The 
room lamp flashes twice when locked and illu-
minates for 15 seconds when unlocked.

•

The hazard warning lamp do not flash when 
both locked and unlocked. The room lamp 
flashes twice when locked and illuminates for 
15 seconds when unlocked.

KEYLESS ENTRY SYSTEM TIMER LOCK 
FUNCTION INSPECTION

M1428004000183

Push the transmitter unlock button and check to see 
that the doors lock within 30 seconds. If it doesn't, 
then execute troubleshooting remedies. Refer to 
GROUP 54B, Troubleshooting 

P.54B-13

 or GROUP 

54C, Troubleshooting 

P.54C-4

.

ENABLING/DISABLING THE 
ANSWERBACK FUNCTION

M1428003200355

If the keyless entry system locks or unlocks the 
doors, the room lamp flashes or illuminates, the haz-
ard warning lamp flashes (hazard answerback func-
tion). The hazard answerback function can be 
enabled or disabled according to the following proce-
dure:

ENABLING/DISABLING THE HAZARD 
ANSWERBACK FUNCTION

The hazard answerback function can be enabled or 
disabled by one of the two following procedures.

<WHEN USING THE TRANSMITTER 
AFTER DIAGNOSIS CONNECTOR (1) IS 
EARTHED>

1. Enter the hazard answerback customize mode by 

performing one of the following steps. If the 
ETACS-ECU enters the customize mode, its 
buzzer will sound once.
(1) Turn the ignition switch to “LOCK”(OFF) 

position.

(2) Turn off the hazard warning lamp switch.

CAUTION

Before connecting or disconnecting the earth, 
turn the ignition switch to the "LOCK" (OFF) 
position.

AC305133AB

Diagnosis 

connector

MB991529

Steering shaft

(3) Connect the diagnosis connector to the 

special tool diagnosis code check harness 
(MB991529).

(4) Close the driver's side door.
(5) Keep the windshield washer switch on for at 

least ten seconds. Then the ETACS-ECU 
buzzer will sound once.

2. If the transmitter “LOCK” button is pushed 

consecutively twice (within two seconds), the 
ETACS-ECU buzzer will sound, indicating that the 
hazard answerback function can be enabled or 
disabled when the doors are locked.

KEYLESS ENTRY SYSTEM

BODY

42-42

• Enable the hazard answerback function 

when the doors are locked: The 
ETACS-ECU buzzer will sound once.

• Disable the hazard answerback function 

when the doors are locked: The 
ETACS-ECU buzzer will sound twice.

3. If the transmitter “UNLOCK” button is pushed 

consecutively twice (within two seconds), the 
ETACS-ECU buzzer will sound, indicating that the 
hazard answerback function can be enabled or 
disabled when the doors are unlocked.

• Enable the hazard answerback function 

when the doors are unlocked: The 
ETACS-ECU buzzer will sound once.

• Disable the hazard answerback function 

when the doors are unlocked: The 
ETACS-ECU buzzer will sound twice.

4. Exit the hazard answerback customize mode by 

observing one of the following steps.
(1) Disconnect diagnosis connector terminal (1) 

form the earth.

(2) Turn the ignition switch to position other then 

“LOCK”(OFF), or remove the ignition key.

(3) Open the driver's side door.
(4) Any other warning buzzer output occurs.

NOTE: If any operation is not done for at least three 
minutes after the ETACS-ECU has entered the cus-
tomize mode, the hazard answerback customize 
mode will be canceled automatically.

<WHEN THE TRANSMITTER IS USED 
AFTER CONNECTING M.U.T.-II TO THE 
DIAGNOSIS CONNECTOR>

1. Enter the hazard answerback customize mode by 

performing one of the following steps. If the 
ETACS-ECU enters the customize mode, its 
buzzer will sound once.
(1) Turn the ignition switch to “LOCK”(OFF) 

position.

(2) Turn off the hazard warning lamp switch.

CAUTION

Before connecting or disconnecting the M.U.T.-II, 
turn the ignition switch to the "LOCK" (OFF) 
position.

AC304777

Steering shaft

AC

MB991502

16-Pin

(3) Connect the M.U.T.-II to the diagnosis 

connector.

(4) Close the driver's side door.
(5) Keep the windshield washer switch on for at 

least ten seconds. Then the ETACS-ECU 
buzzer will sound once.

2. If the transmitter “LOCK” button is pushed 

consecutively twice (within two seconds), the 
ETACS-ECU buzzer 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 buzzer will sound once.

• Disable the hazard answerback function 

when the doors are locked: The 
ETACS-ECU buzzer will sound twice.

3. If the transmitter “UNLOCK” button is pushed 

consecutively twice (within two seconds), the 
ETACS-ECU buzzer will sound, indicating that the 
hazard answerback function can be enabled or 
disabled when the doors are unlocked.

• Enable the hazard answerback function 

when the doors are unlocked: The 
ETACS-ECU buzzer will sound once.

• Disable the hazard answerback function 

when the doors are unlocked: The 
ETACS-ECU buzzer will sound twice.

4. Exit the hazard answerback customize mode by 

observing one of the following steps.
(1) Disconnect M.U.T.-II from the diagnosis 

connector.

(2) Turn the ignition switch to position other then 

“LOCK”(OFF), or remove the ignition key.

(3) Open the driver's side door.
(4) Any other warning buzzer output occurs.

KEYLESS ENTRY SYSTEM

BODY

42-43

NOTE: If any operation is not done for at least three 
minutes after the ETACS-ECU has entered the cus-
tomize mode, the hazard answerback customize 
mode will be canceled automatically.

<WHEN THE TRANSMITTER IS USED 
AFTER CONNECTING SPECIAL TOOL 
V.C.I. (MB991824) TO THE DIAGNOSIS 
CONNECTOR>

1. Enter the hazard answerback customize mode by 

performing one of the following steps. If the 
ETACS-ECU enters the customize mode, its 
buzzer will sound once.
(1) Turn the ignition switch to “LOCK”(OFF) 

position.

(2) Turn off the hazard warning lamp switch.

CAUTION

Before connecting or disconnecting the V.C.I., 
turn the ignition switch to the "LOCK" (OFF) 
position.

AC309970

AC211686

AC

MB991911

MB991824

16-Pin

(3) Connect the V.C.I. to the diagnosis connector.
(4) Turn the V.C.I. power switch to the "ON" 

position.

(5) Close the driver's side door.
(6) Keep the windshield washer switch on for at 

least ten seconds. Then the ETACS-ECU 
buzzer will sound once.

2. If the transmitter “LOCK” button is pushed 

consecutively twice (within two seconds), the 
ETACS-ECU buzzer 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 buzzer will sound once.

• Disable the hazard answerback function 

when the doors are locked: The 
ETACS-ECU buzzer will sound twice.

3. If the transmitter “UNLOCK” button is pushed 

consecutively twice (within two seconds), the 
ETACS-ECU buzzer will sound, indicating that the 
hazard answerback function can be enabled or 
disabled when the doors are unlocked.

• Enable the hazard answerback function 

when the doors are unlocked: The 
ETACS-ECU buzzer will sound once.

• Disable the hazard answerback function 

when the doors are unlocked: The 
ETACS-ECU buzzer will sound twice.

4. Exit the hazard answerback customize mode by 

observing one of the following steps.
(1) Disconnect V.C.I. from the diagnosis 

connector.

(2) Turn the ignition switch to position other then 

“LOCK”(OFF), or remove the ignition key.

(3) Open the driver's side door.
(4) Any other warning buzzer output occurs.

NOTE: If any operation is not done for at least three 
minutes after the ETACS-ECU has entered the cus-
tomize mode, the hazard answerback customize 
mode will be canceled automatically.

HOW TO REGISTER SECRET CODE

M1428001000667

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 previously registered codes for all 
transmitters are cleared. Therefore, if you are using 
four transmitters or are adding more transmitters, the 
codes for all transmitters must be registered at the 
same time.

KEYLESS ENTRY SYSTEM

BODY

42-44

WHEN THE SPECIAL TOOL DIAGNOSIS 
CODE CHECK HARNESS (MB991529) IS 
USED

1. Check that the doors lock normally when the key 

is used.

2. Insert the ignition key.

CAUTION

Before connecting or disconnecting the earth, 
turn the ignition switch to the "LOCK" (OFF) 
position.

AC305133AB

Diagnosis 

connector

MB991529

Steering shaft

3. Connect the diagnosis connector to the special 

tool diagnosis code check harness (MB991529).
NOTE: This will connect terminal (1) of the diag-
nosis connector to earth, and the system will be in 
secret code registration standby mode.

ACX00571

Ground connected

Within 10 seconds

Hazard 
warning
switch

ON

OFF

1

2

3

4

5

6

AG

4. Press the hazard warning lamp switch six times 

within 10 seconds.
NOTE: Once the process is completed six times, 
then it will operate with all doors lock and unlock 
operations once and then go to the save mode.
NOTE: The hazard warning lamp switch is turned 
on and off alternately whenever it is pushed.

5. Press the transmitter switch, and then press it two 

times within 10 seconds of the first press. This will 
register the code.

6.  Once the program is saved, it will operate once 

with the all doors lock and unlock operations. 

7. If you are using two or more transmitters or have 

added a second transmitter, the next transmitter 
should be registered within one minute after 
registering the code for the previous transmitter. 
The registration procedure is common for all the 
transmitters.

8. Registration mode will be cancelled under the 

following conditions:

• When the secret code for four transmitters has 

been registered;

• When passing one minute after finishing the reg-

istration of all transmitters;

• When the diagnosis connector is disconnected 

from earth;

• When the key is removed from the key cylinder;

• When no secret codes have been registered for 

more then one minute after the registration mode 
is entered;

9. After the registration is completed, remove the 

ignition key and close all the doors, and then 
check that the keyless entry system operates 
normally.

WHEN THE M.U.T.-II IS USED

1. Check that the doors lock normally when the key 

is used.

2. Insert the ignition key.

CAUTION

Before connecting or disconnecting the M.U.T.-II, 
turn the ignition switch to the "LOCK" (OFF) 
position.

AC304777

Steering shaft

AC

MB991502

16-Pin

3. Connect the M.U.T.-II to the diagnosis connector.