Mitsubishi Colt Ralliart. Manual - part 399

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-104

INSPECTION PROCEDURE F-5: The intermittent wiper interval can not be adjusted by operating the 
windshield intermittent wiper volume control.

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

The column switch or the ETACS-ECU may be 
defective.

POSSIBLE CAUSES

• Malfunction of the column switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. SWS monitor data list

• Rotate the windshield intermittent wiper volume 

when the vehicle is stopped.

NOTE: Also check that the windshield wiper interval 

changes smoothly when the windshield intermit-
tent wiper interval adjusting knob is rotated from 
"SLOW" to "FAST" positions.

OK: Normal condition is displayed.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Refer to Inspection Procedure N-6 "The 
windshield intermittent wiper volume signal 
is not received 

P.54C-211

."

Step 2. Retest the system.
Check that the windshield intermittent wiper interval 
can be adjusted by operating the windshield intermit-
tent wiper volume control.

OK: The intermittent wiper interval is 
changed as the intermittent wiper volume is 
rotated.

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.

WINDSHIELD WIPER 
INTERMITTENT VOLUME

INPUT SIGNAL

ETACS-ECU

Windshield Wiper Intermittent Volume Input Signal

Item No.

Item name

Normal condition

Item 37

INT WIPER TIME

4.6 

− 32.0 s

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SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-105

INSPECTION PROCEDURE F-6: The intermittent wiper interval is not changed according to the 
vehicle speed.

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

The ETACS-ECU calculates the intermittent wiper 
interval according to the vehicle speed signal which 
is sent by the engine-CVT-ECU.
If the intermittent wiper interval does not depend on 
the vehicle speed, the input circuit of the vehicle 
speed signal and the ETACS-ECU may be defective.

POSSIBLE CAUSES

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Check the operation by operating the 
intermittent wiper volume.
Check that the windshield intermittent wiper interval 
can be adjusted by operating the windshield intermit-
tent wiper volume control.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Refer to Inspection Procedure F-5 "The 
intermittent wiper interval can not be 
adjusted by operating the windshield 
intermittent wiper volume control 

P.54C-104

."

Step 2. Customize function by using the SWS 
monitor
Use the SWS monitor customisation function to con-
firm that "SPEED SEN WIP" is set to "W.FUNC-
TION".

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Use the SWS monitor customisation 
function to set the "SPEED SEN WIP" to 
"W.FUNCTION" (Refer to 

P.54C-240

).

Step 3. 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 4.

NO : 

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

P.54D-13

).

Step 4. M.U.T.-III other system diagnosis code
Check whether the combination meter-related diag-
nosis code is set.

Q: Is the diagnosis code set?

YES : 

Diagnose the combination meter (Refer to 

GROUP 54A 

− Troubleshooting 

P.54A-31

).

NO : 

Go to Step 5.

INPUT SIGNAL

INPUT SIGNAL

VEHICLE SPEED

COMBINATION
METER

VARIABLE INTERMITTENT WIPER
CONTROL SWITCH

ETACS-ECU

CAN COMMUNICATION LINE
(CAN_L LINE)

CAN COMMUNICATION LINE
(CAN_H LINE)

Variable Intermittent Wiper Control Circuit

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SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-106

Step 5. ECU check by using the SWS monitor.
Check that the power supply and earth lines to the 
ETACS-ECU and the SWS communication lines are 
normal.

• Ignition switch: ON

ECU TO BE CHECKED

• ETACS ECU

OK: "OK" is displayed on the "ETACS-ECU" 
menu.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Refer to Inspection Procedure A-3 
"Communication with the ETACS-ECU is 
not possible 

P.54C-41

."

Step 6. Retest the system.
(1) Replace the ETACS-ECU.
(2) Check that the vehicle speed-dependent 

intermittent wiper system should 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 combination meter.

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Index

Group

TOC

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-107

INSPECTION PROCEDURE F-7: The windshield washer does not work.

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

The 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. Check the operation of the windshield 
wipers.
Check that the windshield wipers work normally.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Refer to Inspection Procedure F-1 "The 
windshield wipers does not work at all 

P.54C-91

."

IGNITION
SWITCH (ACC)

ETACS-ECU

J/B SIDE

WINDSHIELD
WASHER

INPUT SIGNAL

WINDSHIELD
WASHER
RELAY

WASHER
MOTOR

Windshield Washer Motor Circuit

REAR 
WASHER 
RELAY

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

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