Mitsubishi Colt Ralliart. Manual — part 402

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-116

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

NOTE:

Prior to the wiring harness inspection, check interme-
diate connector C-12 and junction block connectors
B-128, and repair if necessary.

• Check the power supply line for open or short cir-

cuit.

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.

AC401046

Connector: E-04

AC

Harness side

AC313872

Connector: B-128

AD

Junction block side

AC401059

Connector: C-12

AC

AC313872 AH

Connector: B-134

Harness side

Junction block (Rear view)

Main

Index

Group

TOC

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-117

Step 6. Check the wiring harness between B-134
ETACS-ECU connector terminal No.14 to E-04
rear wiper motor connector terminal No.3.

NOTE:

Prior to the wiring harness inspection, check interme-
diate connector C-12, junction block connectors
B-128, and repair if necessary.

• Check the power supply line for open or short cir-

cuit.

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Repair the wiring harness.

Step 7. ETACS switch data by using the SWS
monitor.

• Ignition switch: ACC or ON

• Operate the rear wiper

NOTE: Confirm that the M.U.T.-III displays from "ON"
to "OFF" when rear wiper stops at the predetermined
park position.

OK: Normal conditions is displayed.

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.

AC313872 AH

Connector: B-134

Harness side

Junction block (Rear view)

AC401046

Connector: E-04

AC

Harness side

AC313872

Connector: B-128

AD

Junction block side

AC401059

Connector: C-12

AC

Item No.

Item name

Normal
condition

Item 09

R.WIPER A/STOP

ON

Main

Index

Group

TOC

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-118

INSPECTION PROCEDURE G-3: When the selector lever is moved to "R" position during the rear
wiper operation, the rear wiper does not operate at the continuous mode. <CVT>

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

If the rear wiper does not operate consecutively
when the selector lever is moved to the R position
during the rear wiper operation, the shift position
input signal circuit or the ETACS-ECU may be defec-
tive.

POSSIBLE CAUSES

• Malfunction of the engine-CVT-ECU

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Check the operation of the rear wiper.
Check that the rear wiper system should work nor-
mally by operating the rear wiper switch.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Refer to inspection procedure G-1 "The rear
wiper does not work at all

P.54C-110

."

Step 2. M.U.T.-III CAN bus diagnostics
Use the M.U.T.-III to diagnose the CAN bus lines.

Q: Is the check result normal?

YES :

Go to Step 3.

NO :

Repair the CAN bus line (Refer to GROUP
54D, Diagnosis

P.54D-13

).

Step 3. M.U.T.-III other system diagnosis code
Check whether the engine-CVT-ECU-related diagno-
sis code is set.

Q: Is the diagnosis code set?

YES :

Diagnose the CVT (Refer to GROUP 23A

−

Troubleshooting

P.23A-14

).

NO :

Go to Step 4.

Step 4. Retest the system.
Check that the rear wiper operates consecutively
when the selector lever is moved to the R position
during the rear wiper operation.

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.

ETACS-ECU

· IGNITION SWITCH (IG1)
· REAR WIPER SWITCH

ENGINE-CVT-
ECU

CAN COMMUNICATION LINE
(CAN_L LINE)

CAN COMMUNICATION LINE
(CAN_H LINE)

INPUT SIGNAL

INPUT SIGNAL

INHIBITOR SWITCH ("R" POSITION)

"R" Position During Rear Wiper Operation Circuit

Main

Index

Group

TOC

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-119

INSPECTION PROCEDURE G-4: The rear washer does not work.

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

If the rear washer does not work normally, the input
signal circuits to the rear washer switch, washer
motor, the column switch, the ETACS-ECU may be
defective.

POSSIBLE CAUSES

• Malfunction of the washer motor

• Malfunction of the column switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Confirm the operation of the rear wiper.
Check that the rear wiper work normally.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Refer to Inspection Procedure G-1 "The rear
wiper does not work at all

P.54C-110

."

IGNITION
SWITCH (ACC)

ETACS-ECU

J/B SIDE

REAR
WASHER

INPUT SIGNAL

WINDSHIELD
WASHER
RELAY

WASHER
MOTOR

REAR
WASHER
RELAY

Rear Washer Motor 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 : Grey R : Red P : Pink V : Violet PU : Purple

Main

Index

Group

TOC