Mitsubishi Lancer Evolution IX. Manual - part 143

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-135

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) NOT USING SWS MONITOR

54B-136

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) NOT USING SWS MONITOR

54B-137

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 front-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) NOT USING SWS MONITOR

54B-138

DIAGNOSTIC PROCEDURE

Step 1. M.U.T.-II/III diagnosis code.
When the ignition switch is turned to the LOCK 
(OFF) position, check that the ETACS-ECU does not 
set the diagnosis code.

Q: Is the diagnosis code set?

YES : 

Refer to diagnosis code chart 

P.54B-14

.

NO : 

Go to Step 2.

Step 2. Pulse check
Check the input signals below which are related to 
the windshield wiper.

OK: The M.U.T.-II/III sounds or the voltmeter 
needle fluctuates. 

Q: Is 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 L-1 "The 
ignition switch (ACC) signal is not received 

P.54B-239

."

Windshield mist wiper switch signal is not 
received. : 

Refer to inspection procedure L-5 "The 

column switch (windshield wiper washer 
and rear wiper washer switch) signal is not 
received 

P.54B-249

."

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 

Cope with Intermittent Malfunction 

P.00-5

).

NO : 

Replace the front-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.