Mitsubishi Colt Ralliart. Manual - part 365

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-204

Step 4. Retest the system.
Check that the ignition switch (IG1) signal is received 
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 N-3: The driver's door 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 driver's door switch is used to 
operate the functions below. If the signal is abnormal, 
these functions will not work normally.

• Lamp reminder buzzer

• Keyless entry system

• Power window timer

• Ignition key cylinder illumination lamp

• Door-ajar warning lamp

POSSIBLE CAUSES

• Malfunction of the driver's door switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

ETACS-
ECU

DOOR SWITCH 
(FRONT: RH)

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

Driver's Door Switch Input Circuit

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INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-205

DIAGNOSIS PROCEDURE

Step 1. Check the installation condition.
Check that the door switch (front: RH) is installed on 
the body correctly.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Correct the installation condition.

Step 2. Connector check: C-29 door switch (front: 
RH) connector.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair the defective connector.

Step 3. Check the door switch (front: RH).
Refer to GROUP 42 

− Door 

P.42-39

.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Replace the door switch (front: RH).

Step 4. Connector check: B-133 ETACS-ECU 
connector.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the defective connector.

Step 5. Check the wiring harness between C-29 
door switch (front: RH) connector terminal No.1 
to B-133 ETACS-ECU connector terminal No.51.

NOTE: 

Prior to the wiring harness inspection, check joint 
connector B-23 and B-24, and repair if necessary.

• Check the input line for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the wiring harness.

AC401057

AF

Connector: C-29

Harness side

AC313826AC

B-133 (GR)

Connector: B-133

Harness side

Junction block (Rear view)

AC401057

AF

Connector: C-29

Harness side

AC313826AC

B-133 (GR)

Connector: B-133

Harness side

Junction block (Rear view)

AC401056

Connectors: B-23, B-24

AC

B-23

B-24

B-24

B-23

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Index

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TOC

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-206

Step 6. Retest the system.
Check that the door switch (front: RH) signal is 
received 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 N-4: The column switch (lighting and turn-signal 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 column switch (lighting and 
turn-signal lamp switch) is used to operate the func-
tions below. If the signal is abnormal, these functions 
will not work normally.

• Lamp reminder buzzer

• Headlamp and tail lamp

• Fog lamp

• Turn signal lamp

POSSIBLE CAUSES

• Malfunction of the column switch

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. M.U.T.-III diagnosis code
Check that the ETACS-ECU sets a diagnosis code.

Q: Is the diagnosis code set?

YES : 

Refer to diagnosis code chart 

P.54B-18

.

NO : 

Go to Step 2.

Step 2. Retest the system.
Replace the column switch, and check if the column 
switch (lighting and turn-signal lamp switch) sends 
signal.
(1) Replace the column switch.
(2) Check if the column switch (lighting and 

turn-signal switch) sends signal.

Q: Is the check result normal?

YES : 

The procedure is complete.

NO : 

Replace the ETACS-ECU.

Lighting Switch Input Circuit

(DIMMER· PASSING SWITCH)

(LIGHTING SWITCH)

TURN-SIGNAL
LAMP SWITCH

COLUMN SWITCH

COLUMN-ECU

Main

Index

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TOC

INPUT SIGNAL PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-207

INSPECTION PROCEDURE N-5: The column switch (windshield wiper washer and rear wiper washer 
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 column switch (wiper switch) is 
used to operate the functions below. If the signal is 
abnormal, these functions will not work normally.

• Windshield wiper and washer

• Rear wiper and washer

POSSIBLE CAUSES

• Malfunction of the column switch

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. M.U.T.-III diagnosis code
Check that the ETACS-ECU sets a diagnosis code.

Q: Is the diagnosis code set?

YES : 

Refer to diagnosis code chart 

P.54B-18

.

NO : 

Go to Step 2.

Step 2. Retest the system.
Replace the column switch, and check if the column 
switch (windshield wiper washer and rear wiper 
washer switch) sends signal.
(1) Replace the column switch.
(2) Check if the column switch (windshield 

wiper/washer and rear wiper washer switch) 
sends signal.

Q: Is the check result normal?

YES : 

The procedure is complete.

NO : 

Replace the ETACS-ECU.

WINDSHIELD
WIPER SWITCH

COLUMN-ECU

COLUMN SWITCH

WINDSHIELD
WASHER SWITCH

REAR WIPER AND
WASHER SWITCH

Wiper and Washer Switch Input Circuit

Main

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