Mitsubishi Colt Ralliart. Manual — part 357

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-172

COMMENTS ON TROUBLE SYMPTOM

If any of the turn-signal lamp does not illuminate nor-
mally, wiring harness connector(s) or the bulb may
be defective.

POSSIBLE CAUSES

• Defective front turn-signal lamp bulb

• Defective head lamp assembly

• Defective side turn-signal lamp

• Defective rear turn-signal lamp bulb

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Confirm which turn-signal lamp is
defective.

Q: Which turn-signal lamp fails to illuminate

correctly?
Front turn-signal lamp :

Go to Step 2.

Side turn-signal lamp :

Go to Step 8.

Rear turn-signal lamp :

Go to Step 14.

ETACS-ECU

REAR
COMBINATION
LAMP
(TURN: LH)

FRONT
COMBINATION
LAMP
(TURN: LH)

SIDE TURN-
SIGNAL
LAMP
(LH)

J/B SIDE

Turn-Signal Lamps Circuit (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 : Grey R : Red P : Pink V : Violet PU : Purple

Main

Index

Group

TOC

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-173

Step 2. Connector check: A-25 <front
combination lamp (turn: RH)> or A-12 <front
combination lamp (turn: LH)> connector

Q: Are the check results normal?

YES :

Go to Step 3.

NO :

Repair the defective connector.

Step 3. Check the bulb(s) of the turn-signal
lamps.
Check the bulb(s) of the defective lamp.

Q: Is the check result normal?

YES :

Go to Step 4.

NO :

Replace the bulb(s) of the defective lamp.

Step 4. Resistance measurement at A-25 <front
combination lamp (turn: RH)> or A-12 <front
combination lamp (turn: LH)> connector

(1) Disconnect the connector, and measure at the

wiring harness side.

(2) Measure the resistance between the defective

lamp connector terminal and body earth.

•

Resistance between A-25 <front combination

lamp (turn: RH)> connector or A-12 <front
combination lamp (turn: LH)> connector ter-
minal No.6 and body earth

OK: Continuity exists (2

Ω or less)

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Go to Step 5.

AC509191

Connector: A-12

Harness side

AB

A-12 (B)

AC509176

Connector: A-25

Harness side

AC

A-25(B)

AC509191

Connector: A-12

Harness side

AB

A-12 (B)

AC509176

Connector: A-25

Harness side

AC

A-25(B)

AC313972 DJ

Connectors: A-12, A-25

(Harness side)

Main

Index

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TOC

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-174

Step 5. Check the wiring harness from A-25
<front combination lamp (turn: RH)> or A-12
<front combination lamp (turn: LH)> connector
terminal No.6 and body earth.

• Check the earth wires for open circuit.

Q: Is the check result normal?

YES :

Go to Step 6.

NO :

Repair the wiring harness.

Step 6. Connector check: B-134 ETACS-ECU
connector

Q: Is the check result normal?

YES :

Go to Step 7.

NO :

Repair the defective connector.

AC509191

Connector: A-12

Harness side

AB

A-12 (B)

AC509176

Connector: A-25

Harness side

AC

A-25(B)

AC313826

Connector: B-134

AG

Junction block side

Junction block (Rear view)

Main

Index

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SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR

54B-175

Step 7. Check the wiring harness from A-25
<front combination lamp (turn: RH)> connector
or A-12 <front combination lamp (turn: LH)>
connector terminal No.12 and B-134 ETACS-ECU
connector terminal No.4 (RH) or No.3 (LH).

NOTE:

Prior to the wiring harness inspection, check junction
block connector B-112, and repair if necessary.

• Check the output lines for open circuit.

Q: Is the check result normal?

YES :

Go to Step 20.

NO :

Repair the wiring harness.

Step 8. Connector check: A-01 <side turn-signal
lamp (RH)> or A-07 <side turn-signal lamp (LH)>
connector

Q: Are the check results normal?

YES :

Go to Step 9.

NO :

Repair the defective connector.

Step 9. Check the bulb(s) of the turn-signal
lamps.
Check the bulb(s) of the defective lamp.

Q: Is the check result normal?

YES :

Go to Step 10.

NO :

Replace the bulb(s) of the defective lamp.

AC509191

Connector: A-12

Harness side

AB

A-12 (B)

AC509176

Connector: A-25

Harness side

AC

A-25(B)

AC313826

Connector: B-134

AG

Junction block side

Junction block (Rear view)

AC313870

Connector: B-112

BE

Junction block (Front view)

Harness side

AC313797AE

A-01 (GR)

Connector: A-01

Harness side

AC313811AJ

A-07 (GR)

Connector: A-07

Harness side

Main

Index

Group

TOC