Mitsubishi Lancer Evolution IX. Manual - part 239

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-215

INSPECTION PROCEDURE I-3: Any of the turn-signal lamps does not illuminate. <LH drive vehicles>

CAUTION

Whenever the ECU is replaced, ensure that the 

input and output signal circuits are normal.

COMMENTS ON TROUBLE SYMPTOM

If any of the turn-signal lamps does not illuminate 
normally, wiring harness connector(s) or the bulb 
may be defective.

POSSIBLE CAUSES

• Defective turn-signal lamp bulb

• Damaged harness wires and connectors

SIDE 
TURN 
SIGNAL 
LAMP
(LH)

TURN-SIGNAL 
LAMP RELAY: LH

HEADLAMP
ASSEMBLY
(LH)

HEADLAMP
ASSEMBLY
(RH)

REAR 
COMBINATION
LAMP (RH)

REAR 
COMBINATION
LAMP (LH)

SIDE TURN 
SIGNAL LAMP
(RH)

COMBINATION
METER

J/B SIDE

ETACS-ECU

TURN-SIGNAL 
LAMP RELAY: RH

Turn-Signal Lamps Circuit <LHD>

Wire colour code
B : Black     LG : Light green     G : Green     L : Blue     W : White     Y : Yellow     SB : Sky blue
BR : Brown     O : Orange     GR : Grey     R : Red     P : Pink     V : Violet     PU : Purple

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-216

DIAGNOSTIC PROCEDURE

Step 1. Connector check: A-39 <front RH> or 

A-31 <front LH> headlamp assembly connector, 

A-01 <side RH> or A-02 <side LH> side 

turn-signal lamp connector, F-08 <rear RH> or 

F-14 <rear LH> rear combination lamp connector, 

C-02 <turn-signal indicator lamp> and C-01 

<turn-signal indicator lamp (LH)> combination 

meter connector

Q: Is the check result normal?

YES : 

Go to Step 2.

NO : 

Repair the defective connector.

Step 2. Check the bulb(s) of the turn-signal lamps 
or the turn-signal indicator lamps.
Check the bulb(s) of the defective lamp.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Replace the bulb(s) of the defective lamp.

AC310432

Connectors: A-01, A-39
<LHD>

A-39

A-01 (GR)

Harness side

A-01

Harness side

A-39

AB

AC310543

Connectors: A-02, A-31
<LHD>

A-31

A-02 (GR)

Harness side

A-02

Harness side

A-31

AB

AC310468

Connectors: F-08, F-14
<LHD>

F-14

F-08

Harness side

F-08

Harness side

F-14

AC

AC310447

Connectors: C-01, C-02

AE

<LHD>

C-01
Harness side

C-02 
Harness side

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C-01

C-02(L)

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-217

Step 3. Resistance measurement at the A-39 
<front RH> or A-31 <front LH> headlamp 
assembly connector, the A-01 <side RH> or A-02 
<side LH> side turn-signal lamp connector, the 
F-08 <rear RH> or F-14 <rear LH> rear 
combination lamp connector, the C-02 
<turn-signal indicator lamp> combination meter 
connector

(1) Disconnect the connector, and measure at the 

wiring harness side.

AC310432

Connectors: A-01, A-39
<LHD>

A-39

A-01 (GR)

Harness side

A-01

Harness side

A-39

AB

AC310543

Connectors: A-02, A-31
<LHD>

A-31

A-02 (GR)

Harness side

A-02

Harness side

A-31

AB

AC310468

Connectors: F-08, F-14
<LHD>

F-14

F-08

Harness side

F-08

Harness side

F-14

AC

AC310446

Connector: C-02
<LHD>

AK

Harness side

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39

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48

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C-02 (L)

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-218

(2) Measure the resistance between the defective 

lamp connector terminal and body earth.

•

Resistance between A-39 <front RH> headlamp 

assembly connector terminal No.7 and body 
earth

• Resistance between A-31 <front LH> head-

lamp assembly connector terminal No.7 and 
body earth

•

Resistance between A-01 <side RH> side 

turn-signal lamp connector terminal No.1 and 
body earth

• Resistance between A-02 <side LH> side 

turn-signal lamp connector terminal No.1 and 
body earth

•

Resistance between F-08 <rear RH> rear combi-

nation lamp connector terminal No.5 and 
body earth

• Resistance between F-14 <rear LH> rear 

combination lamp connector terminal No.5 
and body earth

•

Resistance between C-02 <turn-signal indicator 

lamp> combination meter terminal No.48 and 
body earth

OK: 2 

Ω or less

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

Go to Step 4.

AC301541HG

Connector A-31, A-39
(Harness side)

AC301541HH

Connector A-01, A-02
(Harness side)

AC301541HI

Connector F-08, F-14
(Harness side)

AC301541HE

Connector C-02
(Harness side)

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