Mitsubishi Colt Ralliart. Manual — part 394

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-84

KEYLESS ENTRY SYSTEM

INSPECTION PROCEDURE E-1: Keyless entry system does not work.

CAUTION

Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM

If the keyless entry system does not work normally,
the input signal circuits to the components below or
the ETACS-ECU may be defective.

• Key reminder switch

• All of the door switches

• Keyless entry transmitter

• Driver's door lock actuator

POSSIBLE CAUSES

• Malfunction of the key reminder switch

• Malfunction of the door switches

• Malfunction of the keyless entry transmitter

• Malfunction of the driver's door lock actuator

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

Step1. ECU check by using the SWS monitor
Check that the power supply and earth lines to the
ETACS-ECU and the SWS communication lines are
normal.

• Ignition switch: OFF

ECU TO BE CHECKED

• ETACS ECU

OK: "OK" is displayed on the "ETACS ECU"
menu.

Q: Is the check result normal?

YES :

Go to Step2.

NO :

Refer to Inspection Procedure A-3
"Communication with the ETACS-ECU is
not possible

P.54C-41

."

Keyless Entry System Function Circuit

ETACS-ECU

INPUT SIGNAL

· ALL OF THE DOOR SWITCHES
· DRIVER'S DOOR LOCK ACTUATOR SWITCH
· KEYLESS ENTRY TRANSMITTER SWITCH
· KEY REMINDER SWITCH

KEYLESS ENTRY
RECEIVER

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TOC

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-85

Step2. Use the SWS monitor to examine the
keyless entry system for signal reception.
Check the condition of the keyless entry transmitter.

OK: By operating the switch as shown in the
table above, relevant normal conditions are
displayed.

Q: Are normal conditions displayed?

YES :

Go to Step3.

NO :

Refer to Inspection Procedure N-12 "Each
switch signal of the keyless entry transmitter
is not received

P.54C-229

."

Step 3. SWS monitor data list
Check the SWS communication input signal, which
are related to the keyless entry system.

<Selected item> ETACS

• Each door: Closed to open

OK: Normal condition is displayed.

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Refer to inspection procedure N-10 "All the
door switch signals are not received

P.54C-222

."

Step4. Retest the system.
Check the keyless entry system works normally.

Q: Is the check result normal?

YES :

The trouble can be an intermittent

malfunction (Refer to GROUP 00

− How to

use Troubleshooting/inspection Service
Points

− How to Cope with Intermittent

Malfunction

P.00-13

).

NO :

Replace the ETACS-ECU.

INSPECTION PROCEDURE E-2: Keyless Entry hazard lamp answerback function or the Room Lamp
Answerback Function does not Work Normally.

CAUTION

Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM

If the hazard warning lamp and the room lamp work
normally, the ETACS-ECU may be defective.
Alternatively, it is possible that the keyless entry haz-
ard lamp answerback function was disabled by the
customisation function.

POSSIBLE CAUSES

• Malfunction of the turn-signal lamp

• Malfunction of the room lamp

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Customize function by using the SWS
monitor
Check that "KEYLESS (HAZARD)" is set to
"LOCK/UNLOCK", "LOCKED" or "UNLOCKED" by
using the adjustment function.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Set "KEYLESS (HAZARD)" to
"LOCK/UNLOCK", "LOCKED" or
"UNLOCKED" by using the adjustment
function. Refer to

P.54C-240

.

Operation switch

Normal conditions
(received signal)

LOCK

LOCK

UNLOCK

UNLOCK

Item No.

Item name

Normal
condition

Item 40

ALL DOOR SW

from OFF
to ON

Main

Index

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SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-86

Step 2. Check the operation of the hazard
warning lamp.
Check that the hazard warning lamps illuminate nor-
mally.

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Refer to inspection procedure L-2 "The
hazard warning lamps do not illuminate

P.54C-173

."

Step 3. Check the operation of the room lamps.
Check that the room lamps illuminate normally.

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Refer to inspection procedure M-2 "The
room lamp does not illuminate normally

P.54C-191

."

Step 4. ECU check by using the SWS monitor
Check that the power supply and earth lines to the
ETACS-ECU and the SWS communication lines are
normal.

• Ignition switch: OFF

ECU TO BE CHECKED

• ETACS ECU

OK: "OK" is displayed on the "ETACS ECU"
menu.

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Refer to Inspection Procedure A-3
"Communication with the ETACS-ECU is
not possible

P.54C-41

."

Step 5. Retest the system.
Check that the keyless entry hazard lamp answer-
back function or the room lamp answerback function
work normally.

Q: Is the check result normal?

YES :

The trouble can be an intermittent

malfunction (Refer to GROUP 00

− How to

use Troubleshooting/inspection Service
Points

− How to Cope with Intermittent

Malfunction

P.00-13

).

NO :

Replace the ETACS-ECU.

Main

Index

Group

TOC

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-87

INSPECTION PROCEDURE E-3: Encrypted Code cannot be Registered.

CAUTION

Whenever the ECU is replaced, ensure that the
input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM

If the encrypted code registration mode is not
entered, the key reminder switch, the hazard warning
lamp switch or the ETACS-ECU may be defective.
If the registration is not possible although the regis-
tration mode is entered, the keyless entry transmitter
or the ETACS-ECU may be defective.

POSSIBLE CAUSES

• Malfunction of the keyless entry transmitter

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Check the encrypted code registration
mode.
Check that the encrypted code registration mode is
entered.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Go to Step 3.

Step2. Use the SWS monitor to examine the
keyless entry system for signal reception.
Check the condition of the keyless entry transmitter.

OK: By operating the switch as shown in the
table above, relevant normal conditions are
displayed.

Q: Are the check result normal?

YES :

Go to Step3.

NO :

Refer to Inspection Procedure N-12 "Each
switch signal of the keyless entry transmitter
is not received

P.54C-229

."

INPUT SIGNAL

ETACS-ECU

· HAZARD WARNING LAMP SWITCH
· KEYLESS ENTRY TRANSMITTER SWITCH
· KEY REMINDER SWITCH

Encrypted Transmitter Code Register Mode

Operation switch

Normal conditions
(received signal)

LOCK

LOCK

UNLOCK

UNLOCK

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