Mitsubishi Lancer Evolution IX. Manual — part 222

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-147

Step 10. Connector check: C-206 column switch
connector

Q: Is the check result normal?

YES :

Go to Step 11.

NO :

Repair the connector.

Step 11. Check the wiring harness between C-206
column switch connector terminal No.8 and
A-11X front-ECU connector terminal No.26.

AC310479

AD

Connector: C-206 <LHD>

Harness side

AC310481AD

Connector: C-206 <RHD>

Harness side

AC310572AC

Connector: A-11X

Relay box side

Battery

29

31 30

28 27

25

26

24

21

22

23

AC310479

AD

Connector: C-206 <LHD>

Harness side

AC310481AD

Connector: C-206 <RHD>

Harness side

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-148

NOTE:

Prior to the wiring harness inspection, check the
intermediate connector C-129 and repair if neces-
sary.

• Check the wiper backup circuit.

Q: Is the check result normal?

YES :

Go to Step 12.

NO :

Repair the wiring harness.

Step 12. Retest the system.
The windshield wiper should now work normally at
all.

Q: Is the check result normal?

YES :

The trouble can be an intermittent

malfunction (Refer to GROUP 00

− How to

Cope with Intermittent Malfunction

P.00-5

).

NO :

Replace the front-ECU.

AC310446

Connector: C-129 <LHD>

AS

AC310454

Connector: C-129 <RHD>

AV

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-149

INSPECTION PROCEDURE F-2: The windshield wipers do not work when the wiper switch is at "INT",
"WASHER" or "MIST" position. However, the wipers work at low speed when the switch is at "LO" and
"HI" position.

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

The system may be at fail-safe mode as the SWS
communication line is defective. If the ETACS-ECU
does not receive the ignition switch (ACC) signal due
to an open circuit in the SWS communication lines or
other reasons when the ignition switch is at the ACC
position, the system will enter the fail-safe mode.

POSSIBLE CAUSES

• Malfunction of the column switch

• Malfunction of the front-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

CIRCUIT
BREAKER

WINDSHIELD
WIPER MOTOR

FRONT-ECU

INPUT SIGNAL

· WINDSHIELD WIPER HI SPEED SWITCH
· WINDSHIELD WIPER INTERMIT SWITCH
· WINDSHIELD WIPER LO SPEED SWITCH
· WINDSHIELD WIPER MIST SWITCH

WIPER SPEED
SWITCHING
RELAY

Windshield Wiper Motor Drive Circuit

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-150

DIAGNOSIS PROCEDURE

Step 1. ECU check on the SWS monitor
Check that the power supply and earth lines to the
column switch (column-ECU) and the front-ECU and
the SWS communication lines are normal.

• Turn the ignition switch to the ACC position.

ECUS TO BE CHECKED

• COLUMN ECU

• FRONT ECU

OK: "OK" is displayed for all the items

Q: Is the check result normal?

"OK" is displayed for all the items :

Go to Step 2.

"NG" is displayed on the "COLUMN ECU" menu. :

Refer to Inspection Procedure A-2
"Communication with the column switch
(column-ECU) is not possible

P.54C-30

."

"NG" is displayed on the "FRONT ECU" menu. :

Refer to Inspection Procedure A-4
"Communication with the front-ECU is not
possible

P.54C-42

."

Step 2. 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

Cope with Intermittent Malfunction

P.00-5

).

NO :

Replace the front-ECU.