Mitsubishi Lancer Evolution IX. Manual - part 225

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-159

Step 8. Connector check: B-01 windshield wiper 
motor connector

Q: Is the check result normal?

YES : 

Go to Step 9.

NO : 

Repair the defective connector.

Step 9. Check the windshield wiper motor 
assembly.
Refer to GROUP 51 

− Windshield wiper 

P.51-21

.

Q: Is the check result normal?

YES : 

Go to Step 10

NO : 

Replace the windshield wiper motor 
assembly.

Step 10. Connector check: A-11X front-ECU 
connector

Q: Is the check result normal?

YES : 

Go to Step 11.

NO : 

Repair the defective connector.

Step 11. Check the wiring harness between A-11X 
front-ECU connector terminal No.28 and B-01 
windshield wiper motor connector terminal No.2.

AC310437

Connector: B-01 <LHD>

AB

Harness side

B-01 (GR)

AC310477

Connector: B-01 <RHD>

AD

Harness side

B-01 (GR)

AC310572AC

Connector: A-11X

Relay box side

Battery

29

31 30

28 27

25

26

24

21

22

23

AC310572AC

Connector: A-11X

Relay box side

Battery

29

31 30

28 27

25

26

24

21

22

23

AC310437

Connector: B-01 <LHD>

AB

Harness side

B-01 (GR)

AC310477

Connector: B-01 <RHD>

AD

Harness side

B-01 (GR)

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-160

NOTE: 

Prior to the wiring harness inspection, check the 
intermediate connector A-13 <LH drive vehicles>, 
C-31 <RH drive vehicles>, and repair if necessary.

• Check the power supply line to front-ECU for 

open circuit.

Q: Is the check result normal?

YES : 

Go to Step 12.

NO : 

Repair the wiring harness.

Step 12. Retest the system.
Check that the windshield wipers work normally by 
moving the switch to each position.

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.

AC303857

Connector: A-13
<LHD>

AB

A-13 (B)

AC310454

Connector: C-31 <RHD>

AY

10

2

9

1

8

3

12

11

4

13

6

15

5

14

7

16

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-161

INSPECTION PROCEDURE F-5: The intermittent wiper interval cannot 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 front-ECU may be defec-
tive.

POSSIBLE CAUSE

• Malfunction of the column switch

• Malfunction of the front-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 L-6 "The 
windshield intermittent wiper volume signal 
is not received 

P.54C-270

."

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 

Cope with Intermittent Malfunction 

P.00-5

).

NO : 

Replace the front-ECU.

ETACS-ECU

WINDSHIELD WIPER 
INTERMITTENT VOLUME

INPUT SIGNAL

Windshield Wiper Intermittent Volume Input Signal

Item No.

Item name

Normal condition

Item 37

INT WIPER TIME

2.4 

− 18.0 s

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-162

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-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 vehicle speed signal 

(engine-ECU)

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Check the adjustment function.
Check that the vehicles speed sensing function has 
been enabled by using the adjustment function.

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Enable the vehicles speed sensing function 
by using the adjustment function. (Refer to 

P.54B-302

).

Step 2. Retest the system.
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 3.

NO : 

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

P.54C-161

."

ETACS-ECU

VEHICLE SPEED

INPUT SIGNAL

Vehicles Speed Input Signal