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.

Main

Index

Group

TOC

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

Main

Index

Group

TOC

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

Main

Index

Group

TOC

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)

Main

Index

Group

TOC