Mitsubishi Lancer Evolution IX. Manual - part 226

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-163

Step 3. SWS monitor data list

• Enter a simulated vehicle speed when the wind-

shield intermittent wiper interval adjusting knob 
position is slow side.

NOTE: Also check that the wiper interval changes 

smoothly when the vehicle is accelerated from 0 
km/h to 25 km/h.

OK: Normal condition is displayed.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Refer to Inspection Procedure L-13 "The 
vehicle speed sensor signal is not received 

P.54C-302

."

Step 4. Retest the system.
Check that the intermittent wiper interval depends on 
the vehicle speed.

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 ETACS-ECU.

Item No. Item name

Normal condition

ITEM 37

INT WIPER TIME

18.0 

− 12.0 s

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-164

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.

FRONT-ECU

WINDSHIELD
WASHER MOTOR

WINDSHIELD
WASHER
RELAY

INPUT SIGNAL

WINDSHIELD WASHER

IGNITION 
SWITCH (ACC)

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

Windshield Washer Motor Circuit

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-165

COMMENTS ON TROUBLE SYMPTOM

The windshield washer motor, the column switch or 
the front-ECU may be defective.

POSSIBLE CAUSES

• Malfunction of the windshield washer motor

• Malfunction of the column switch

• Malfunction of the front-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 do not work at all 

P.54C-142

."

Step 2. 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 3.

"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 3. Function diagnosis by using the SWS 
monitor
Check the SWS communication signal, which are 
related to the windshield washer function.

<Selected item> F.WIPER WASH

• Turn the ignition switch to the ACC position.

• Windshield washer switch: ON

OK: Normal conditions are displayed for all 
the items.

Q: Is the check result normal?

Normal conditions are displayed for all the items : 

Go to Step 4.

Normal condition is not displayed for item No.09 : 

Replace the column switch.

Normal condition is not displayed for item No.31 : 

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

P.54C-258

."

Normal condition is not displayed for item No.70 : 

Replace the front-ECU.

Item No. Item name

Normal condition

Item 09

FRONT WASH. SW ON

Item 31

IG SW (ACC)

ON

Item 70

FRONT ECU ACK

NORMAL ACK or 
HI-BEAM ACK

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-166

Step 4. Connector check: F-18 windshield washer 
motor connector

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the connector.

Step 5. Check the windshield washer motor 
assembly.
Refer to GROUP 51 

− Windshield washer 

P.51-24

.

Q: Is the check result normal?

YES : 

Go to Step 6

NO : 

Replace the windshield washer motor.

Step 6. Resistance measurement at the F-18 
windshield washer motor connector

(1) Disconnect the connector, and measure at the 

wiring harness side.

(2) Continuity between F-18 windshield washer 

motor connector terminal No.1 and body earth

OK: 2

Ω or less

Q: Is the check result normal?

YES : 

Go to Step 8.

NO : 

Go to Step 7.

AC310467AF

Harness side

Connector: F-18 <LHD>

AC310469

AF

Harness side

Connector: F-18 <RHD>

AC310467AF

Harness side

Connector: F-18 <LHD>

AC310469

AF

Harness side

Connector: F-18 <RHD>

AC310506

2

1

Connector F-18
(Harness side)

AJ