Mitsubishi Colt Ralliart. Manual — part 340

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-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. Pulse check
Check the input signals below which are related to
the windshield intermittent wiper function.

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 (IG1) signal is not received. :

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

P.54B-200

."

The windshield wiper volume signal is not
received. :

Refer to Inspection Procedure N-6

"The windshield wiper volume signal is not
received

P.54B-208

."

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

System switch

Check condition

Ignition switch (ACC)

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

Windshield intermittent
wiper volume

When the windshield
intermittent wiper volume
is rotated from "FAST" to
"SLOW" (a pulse is sent
around the volume
middle position)

Main

Index

Group

TOC

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-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.54B-104

."

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 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 4.

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

Main

Index

Group

TOC

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-106

Step 4. Customize function by using the SWS
monitor.
Use the SWS monitor customise function to confirm
that "SPEED SEN WIP" is set to "W.FUNCTION".

CAUTION

The SWS monitor must be used in order to con-
firm and change that setting. Use the SWS moni-
tor to confirm and/or change the customised
function.

Q: Is the check result normal?

YES :

Go to Step 5.

NO :

Use the SWS monitor customise function to
set the "SPEED SEN WIP" to
"W.FUNCTION" (Refer to GROUP 54C

−

Customize function

P.54C-240

).

Step 5. 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.

Main

Index

Group

TOC

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-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
wiper.
Check that the windshield wiper 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.54B-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

Main

Index

Group

TOC