Mitsubishi Colt Ralliart. Manual - part 430

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-228

Step 4. Check the wiring harness between D-08 
front door lock actuator (RH) connector terminal 
No.3 to body earth D-08

NOTE: 

Prior to the wiring harness inspection, check interme-
diate connector B-21, and repair if necessary.

• Check the earth wires for open circuit.

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 : 

Repair the wiring harness.

Step 5. Connector check: B-132 ETACS-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the defective connector.

Step 6. Check the wiring harness from D-08 front 
door lock actuator (RH) connector terminal No.1 
and 2 to B-132 ETACS-ECU connector terminal 
No.41 and 36.

NOTE: 

Prior to the wiring harness inspection, check interme-
diate connector B-21, and repair if necessary.

• Check the input line for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the wiring harness.

AC313837

Connector: D-08

D-08 (B)

AB

Harness side

AC401055

Connector: B-21

AB

AC313826 AD

Connector: B-132

Junction block (Rear view)

Harness side

AC313826 AD

Connector: B-132

Junction block (Rear view)

Harness side

AC313837

Connector: D-08

D-08 (B)

AB

Harness side

AC401055

Connector: B-21

AB

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TOC

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-229

Step 7. ETACS switch data by using the SWS 
monitor
Check the input signal from the driver's door lock 
actuator switch.

• Driver's door lock actuator switch: LOCK → 

UNLOCK

OK: Normal conditions are displayed for all 
the items.

Q: Are the check results 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 N-12: Each switch signal of the keyless entry transmitter is not received.

CAUTION

Whenever the ECU is replaced, ensure that the 
input signal circuit is normal.

COMMENTS ON TROUBLE SYMPTOM

Input signal from the keyless entry transmitter is 
used to operate the keyless entry system. If the sig-
nal is abnormal, the keyless entry system will not 
work normally.

• Keyless entry system

• Keyless entry hazard answerback 

• Multi-mode keyless entry system

POSSIBLE CAUSES

• Malfunction of the keyless entry transmitter

• Defective battery of the keyless entry transmitter

• Malfunction of the ETACS-ECU

Item No.

Item name

Normal 
condition

Item 21

DR DOR LCK SW

from ON 
to OFF

Item 22

DR DOR ULK SW

from OFF 
to ON

KEYLESS ENTRY 
TRANSMITTER

KEYLESS ENTRY 
RECEIVER

ETACS-ECU

Transmitter Input Circuit

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INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-230

DIAGNOSIS PROCEDURE

Step1. Use the SWS monitor to examine the 
keyless entry system for signal reception.

• Use the defective keyless entry system transmit-

ter.

• Examine the signal reception from keyless entry 

transmitter by operating the key switch. If signals 
can be received from the transmitter, the monitor 
screen shows signals relevant to each key 
switch.

OK: Normal condition are displayed for all 
items.

Q: Are the check result normal?

Normal condition are displayed for all items : 

Go 

to Step3.

Normal conditions are displayed for no items. : 

Go 

to Step2.

Normal condition is displayed for either of the 
items. : 

Replace the keyless entry transmitter.

Step 2. Register the encrypted code, and then 
retest the system.

1. Register the keyless entry transmitter again.
2. Check that each signal is received from the key-

less entry transmitter.

Q: Is the check result normal?

YES : 

Accidental erasure of the encrypted code Or 

the key is mismatched. Check that the 
customer is an authorised person.

NO : 

Go to Step 3 (including the case that key 
registration is not possible).

Step 3. Replace the battery of the keyless entry 
transmitter, and retest the system.

1. Replace the battery of the keyless entry transmit-

ter.

2. Check that each signal is received from the key-

less entry transmitter.

Q: Is the check result normal?

YES : 

Flat battery.

NO : 

Go to Step4.

Step 4. Register the encrypted code again by 
using a known good keyless entry transmitter. 
Then retest the system.

1. Register a known good keyless entry transmitter 

(the one which mounting screws are silver).

2. Check that each signal is received from the key-

less entry transmitter.

Q: Is the check result normal?

YES : 

Replace the original keyless entry 

transmitter.

NO : 

Replace the ETACS-ECU (including the 
case where registration is impossible).

Key switch operation

Display on 
M.U.T.-III

LOCK switch

LOCK

UNLOCK switch

UNLOCK

Press and hold the LOCK switch 
for at least one second

LCK LNG PUSH

Press and hold the UNLOCK 
switch for at least one second

ULCK LNG 
PUSH

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TOC

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-231

Inspection Procedure N-13: The fog lamp switch signal is not received.

CAUTION

Whenever the ECU is replaced, ensure that the 
input signal circuit is normal.

COMMENTS ON TROUBLE SYMPTOM

Input signal from the fog lamp switch is used to oper-
ate the fog lamps. If the signal is abnormal, the fog 
lamps will not illuminate and extinguish normally.

POSSIBLE CAUSES

• Malfunction of the fog lamp switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

ETACS-
ECU

FOG LAMP
SWITCH

Fog Lamp Switch Input Circuit

Wire colour code
B : Black     LG : Light green     G : Green     L : Blue     W : White     Y : Yellow     SB : Sky blue
BR : Brown     O : Orange     GR : Gray     R : Red     P : Pink     V : Violet

Main

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