Mitsubishi Colt Ralliart. Manual - part 338

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-96

Step 2. 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 

3.

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

."

Step 3. Retest the system.
The windshield wiper should now 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.

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.

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SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-97

INSPECTION PROCEDURE F-3: The windshield wipers do not stop at the specified park position.

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

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

POSSIBLE CAUSES

• Malfunction of the windshield wiper motor

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

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

IGNITION
SWITCH (ACC)

ETACS-ECU

J/B SIDE

WINDSHIELD 
WIPER MOTOR

WIPER 
AUTOMATIC 
STOP RELAY

Windshield Wiper Automatic Stop Relay Circuit

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SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-98

DIAGNOSIS PROCEDURE

Step 1. Connector check: A-04 windshield wiper 
motor connector.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the connector.

Step 2. 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 3

NO : 

Replace the windshield wiper motor 
assembly.

Step 3. Voltage measurement at the A-04 
windshield wiper motor connector.

(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Ignition switch: ACC

(3) Check the voltage between the A-04 windshield 

wiper motor connector terminal No.2 and body 
earth.

OK: System voltage

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Go to Step 4.

AC313860

Connector: A-04

Harness side

AB

A-04 (GR)

AC313860

Connector: A-04

Harness side

AB

A-04 (GR)

AC313972

Connector A-04
(Harness side)

AM

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SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-99

Step 4. Check the wiring harness between A-04 
windshield wiper motor connector terminal No.2 
to ignition switch (ACC).

NOTE: 

Prior to the wiring harness inspection, check the 
junction connectors B-112, B-129, and repair if nec-
essary.

• Check the power supply line to ignition switch 

(ACC) 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-134 ETACS-ECU 
connector.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Repair the connector.

Step 6. Check the wiring harness between A-04 
windshield wiper motor connector terminal No.3 
to B-134 ETACS-ECU connector terminal No.6.

• Check the input signal lines.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the wiring harness.

AC313860

Connector: A-04

Harness side

AB

A-04 (GR)

AC313870

Connector: B-112

BE

Junction block (Front view)

Harness side

AC313872BC

Connector: B-129

Harness side

Junction block (Rear view)

AC313872 AH

Connector: B-134

Harness side

Junction block (Rear view)

AC313860

Connector: A-04

Harness side

AB

A-04 (GR)

AC313872 AH

Connector: B-134

Harness side

Junction block (Rear view)

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