Mitsubishi Colt Ralliart. Manual - part 339

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-100

Step 7. Retest the system.
Check that the windshield wipers stop at the speci-
fied park position.

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 F-4: The windshield wipers do not work normally.

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

The windshield wiper motor, the column switch or the 
ETACS-ECU may be defective.

POSSIBLE CAUSES

• Malfunction of the windshield wiper motor

• Malfunction of the column switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

Windshield Wiper Motor Drive Circuit

ETACS-ECU

J/B SIDE

CIRCUIT
BREAKER

WIPER SPEED
SWITCHING
RELAY

WINDSHIELD
WIPER MOTOR

INPUT SIGNAL

· WINDSHIELD WIPER HI SPEED SWITCH
· WINDSHIELD WIPER INTERMIT SWITCH

· WINDSHIELD WIPER LO SPEED SWITCH
· WINDSHIELD WIPER MIST SWITCH

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

Index

Group

TOC

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-101

DIAGNOSIS PROCEDURE

Step 1. Pulse check
Check the input signals below which are related to 
the windshield wiper.

OK: The M.U.T.-III sounds or the voltmeter 
needle fluctuates. 

Q: Are the check result normal?

All the signals are received normally : 

Go to Step 

2.

The ignition switch (ACC) signal is not received. : 

Refer to Inspection Procedure N-1 "The 
ignition switch (ACC) signal is not received 

P.54B-200

."

Windshield mist wiper switch signal is not 
received. : 

Refer to Inspection Procedure N-5 

"The column switch (windshield wiper 
washer and rear wiper washer switch) 
signal is not received 

P.54B-207

."

Windshield intermittent wiper switch signal is not 
received. : 

Refer to Inspection Procedure N-6 

"The windshield intermittent wiper volume 
signal is not received 

P.54B-208

."

Windshield low-speed wiper switch signal is not 
received. : 

Refer to Inspection Procedure N-5 

"The column switch (windshield wiper 
washer and rear wiper washer switch) 
signal is not received 

P.54B-207

."

Windshield high-speed wiper switch signal is not 
received. : 

Refer to Inspection Procedure N-5 

"The column switch (windshield wiper 
washer and rear wiper washer switch) 
signal is not received 

P.54B-207

."

Step 2. Connector check: A-04 windshield wiper 
motor connector.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair the defective connector.

Step 3. Check the windshield wiper motor 
assembly.
Refer to GROUP 51 

− Windshield wiper 

P.51-31

.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Replace the windshield wiper motor 
assembly.

Step 4. Retest the system.
Check that the windshield wipers work normally by 
moving the switch to HI or MIST position.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Go to Step 8.

Step 5. Connector check: B-134 ETACS-ECU 
connector.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the defective connector.

System switch

Check condition

Ignition switch (ACC)

When turned from the 
LOCK (OFF) position to 
the ACC position.

Windshield mist wiper 
switch

When the switch is 
turned from off to on.

Windshield intermittent 
wiper switch

When the switch is 
turned from off to on.

Windshield low-speed 
wiper switch

When the switch is 
turned from off to on.

Windshield high-speed 
wiper switch

When the switch is 
turned from off to on.

AC313860

Connector: A-04

Harness side

AB

A-04 (GR)

AC313872 AH

Connector: B-134

Harness side

Junction block (Rear view)

Main

Index

Group

TOC

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-102

Step 6. Check the wiring harness between B-134 
ETACS-ECU connector terminal No.8 to A-04 
windshield wiper motor connector terminal No.4.

NOTE: 

Prior to the wiring harness inspection, check junction 
block connector B-112, and repair if necessary.

• Check the output lines for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the wiring harness.

Step 7. Retest the system.
Check that the windshield wipers work normally by 
moving the switch to each position.

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.

Step 8. Connector check: B-134 ETACS-ECU 
connector.

Q: Is the check result normal?

YES : 

Go to Step 9.

NO : 

Repair the defective connector.

AC313860

Connector: A-04

Harness side

AB

A-04 (GR)

AC313872 AH

Connector: B-134

Harness side

Junction block (Rear view)

AC313870

Connector: B-112

BE

Junction block (Front view)

Harness side

AC313872 AH

Connector: B-134

Harness side

Junction block (Rear view)

Main

Index

Group

TOC

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-103

Step 9. Check the wiring harness between B-134 
ETACS-ECU connector terminal No.7 to A-04 
windshield wiper motor connector terminal No.1.

NOTE: 

Prior to the wiring harness inspection, check junction 
block connector B-112, and repair if necessary.

• Check the output lines for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 10.

NO : 

Repair the wiring harness.

Step 10. Retest the system.
Check that the windshield wipers work normally by 
moving the switch to each position.

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.

AC313860

Connector: A-04

Harness side

AB

A-04 (GR)

AC313872 AH

Connector: B-134

Harness side

Junction block (Rear view)

AC313870

Connector: B-112

BE

Junction block (Front view)

Harness side

Main

Index

Group

TOC