Mitsubishi Lancer Evolution IX. Manual — part 207

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-87

COMMENTS ON TROUBLE SYMPTOM

If the power windows do not work at all, the power
window relay, the power window main switch or the
ETACS-ECU may be defective.

POSSIBLE CAUSES

• Malfunction of the power window relay

• Malfunction of the power window main switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

FUSIBLE LINK

5

POWER WINDOW
RELAY

J/B SIDE

POWER WINDOW
MAIN SWITCH

FRONT
POWER
WINDOW
SUB
SWITCH
(LH)

REAR
POWER
WINDOW
SUB
SWITCH
(LH)

REAR
POWER
WINDOW
SUB
SWITCH
(RH)

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

CPU

Power Window Relay Circuit <RHD>

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-88

DIAGNOSIS PROCEDURE

Step 1. ECU check by using the SWS monitor
Check that the power supply and earth lines to the
ETACS-ECU and the power window main switch
(power window module) and the SWS communica-
tion lines are normal.

• Turn the ignition switch to the ON position.

ECUS TO BE CHECKED

• ETACS ECU

• P/W MODULE

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 "ETACS ECU" menu. :

Refer to Inspection Procedure A-3
"Communication with the ETACS-ECU is
not possible

P.54C-36

."

"NG" is displayed on the "P/W MODULE" menu. :

Refer to Inspection Procedure A-5
"Communication with the power window
main switch (power window module) is not
possible

P.54C-47

."

Step 2. Function diagnosis by using the SWS
monitor.
Check the SWS communication signal, which are
related to the power windows.

<Selected item> POWER WINDOW

• Turn the ignition switch to the ON position.

• Power window main switch: UP

OK: Normal conditions are displayed for all
the items.

Q: Is the check result normal?

Normal conditions displayed for all the items :

Go

to Step 3.

Normal condition is not displayed for item No.30 :

Refer to Inspection Procedure L-2 "The
ignition switch (IG1) signal is not received

P.54C-261

."

Normal condition is not displayed for item No.33 :

Replace the ETACS-ECU.

Normal condition is not displayed for item No.71 :

Replace the power window main switch.

Step 3. Door communication by using the SWS
monitor.
Check the SWS communication signal, which are
related to the power windows.

<Selected item> DOOR CNT. COM.

• Insert the probe (For the insertion point, refer to

P.54C-5

).

• Turn the ignition switch to the ON position.

• Power window main switch: UP

OK: Normal condition is displayed.

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Replace the power window main switch.

Step 4. Retest the system.
Check that the all the power windows work.

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 power window main switch.

Item No. Item name

Normal condition

Item 30

IG SW (IG1)

ON

Item 33

P/W SW ACCEPT PERMIT

Item 71

P/W ECU ACK

INPUT CHECK
(only momentarily
when switch is
operated)

Item No.

Item name

Normal condition

Item C0

PASS DOR UP ON

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-89

INSPECTION PROCEDURE D-2: Driver's power window does not work by means of the power window
main switch. <LH drive vehicles>

COMMENTS ON TROUBLE SYMPTOM

If the driver's power window does not work by means
of the power window main switch, the power window
main switch or the driver's door power window regu-
lator motor may be defective.

POSSIBLE CAUSES

• Malfunction of the power window main switch

• Malfunction of the front power window regulator

motor (LH)

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

STEP 1. Check the power window main switch.
Check that all of the front passenger's and rear door
power windows can operate by means of the power
window main switch.

Q: Is the check result normal?

YES :

Go to Step 2.

NO :

Refer to Inspection Procedure D-1 "Power
windows do not work at all

P.54C-86

."

POWER WINDOW
RELAY

POWER
WINDOW
MAIN SWITCH

FRONT
(LH)

POWER WINDOW
MOTOR
(FRONT: LH)

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

Power Window (front: LH) Circuit <LHD>

CPU

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-90

STEP 2. Connector check: E-05 power window
main switch connector and E-02 front power
window regulator motor (LH) connector

Q: Are the check results normal?

YES :

Go to Step 3.

NO :

Repair the connector.

STEP 3. Check the wiring harness from E-02 front
power window regulator motor (LH) connector
terminal Nos.1 and 4 to E-05 power window main
switch connector terminal Nos.7 and 1.

• Check the input and output lines for open or short

circuit.

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Repair the wiring harness.

STEP 4. Retest the system.
After the power window main switch is replaced,
check that the driver's door power window can be
operated by the power window main switch.
(1) Replace the power window main switch.
(2) Check that the driver's power window works by

means of the power window main switch.

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 power window regulator
motor assembly (LH).

AC310485

Connectors: E-02, E-05 <LHD>

E-02

E-05

Harness side

Harness side

E-05

E-02 (GR)

AB

10

1

6

14

5

12

13

4

11

7

2

3

8

9

Front door (LH)

AC310485

Connectors: E-02, E-05 <LHD>

E-02

E-05

Harness side

Harness side

E-05

E-02 (GR)

AB

10

1

6

14

5

12

13

4

11

7

2

3

8

9

Front door (LH)