Mitsubishi Lancer Evolution IX. Manual - part 127

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-71

INSPECTION PROCEDURE C-5: The impact detection door unlock function does not function.

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

If the impact detection door unlock function does not 
work normally, the input signal circuit from the impact 
detection sensor, the SRS-ECU or the ETACS-ECU 
may be defective.

POSSIBLE CAUSES

• Malfunction of the SRS-ECU

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSTIC PROCEDURE

Use the M.U.T.-II/III to confirm a diagnosis code.
Check whether the ETACS-ECU sets diagnosis code 
No.31 or 32.

Q: Is the diagnosis code set?

YES : 

 Refer to 

P.54B-30

.

NO : 

Replace the ETACS-ECU.

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-72

POWER WINDOW

INSPECTION PROCEDURE D-1: Power windows do not work at all.

CAUTION

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

POWER WINDOW 
RELAY

ETACS-ECU

FRONT 
POWER 
WINDOW 
SUB 
SWITCH 
(RH)

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       

J/B SIDE

CPU

Power Window Relay Circuit <LHD>

FUSIBLE 
LINK

5

POWER WINDOW 
MAIN SWITCH

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-73

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

DIAGNOSIS PROCEDURE

Step 1. Pulse check
Check the input signal from the ignition switch.

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

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>

System switch

Check condition

Ignition switch (IG1) When turned from ACC to 

ON

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-74

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Refer to inspection procedure A-2 "When 
the ignition switch is at the LOCK (OFF) 
position, the functions do not work normally. 
Check the battery power supply circuit to 
the ETACS-ECU 

P.54B-42

."

Step 2. Connector check: C-224 power window 
relay connector

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair the connector.

Step 3. Check the power window relay.
Refer to GROUP 42 

− Door − On-vehicle Service 

P.42-24

.

Q: Is the check result normal?

YES : 

Go to Step 4.

NO : 

Replace the power window relay.

Step 4. Connector check: E-05 power window 
main switch connector

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Repair the connector.

AC310448

AI

Connector: C-224 <LHD>

Junction block (front view)

Junction block side

AC310458

AG

Connector: C-224 <RHD>

Junction block (front view)

Junction block 
side

AC310484

Connector: E-05 <LHD>

AD

Harness side

10

1

6

14

5

12

13

4

11

7

2

3

8

9

Front door (LH)

AC310493

Connector: E-05 <RHD>

AG

Harness side

10

1

6

14

5

12

13

4

11

7

2

3

8

9

Front door (RH)