Mitsubishi Colt Ralliart. Manual - part 415

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-168

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the wiring harness.

Step 7. Retest the system.
Check that the fog lamp illuminate normally.

Q: Is the check result normal?

YES : 

The trouble can be an intermittent 

malfunction (Refer to GROUP 00 

− How to 

use Troubleshooting/inspection Service 
Points 

− How to Cope with Intermittent 

Malfunction 

P.00-13

).

NO : 

Replace the fog lamp(s).

INSPECTION PROCEDURE K-3: The fog lamp indicator does not illuminate normally.

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

If the fog lamp indicator does not illuminate normally, 
connector(s), wiring harness in the CAN bus lines, 
the ETACS-ECU or the combination meter may be 
defective.

POSSIBLE CAUSES

• Malfunction of the ETACS-ECU

• Malfunction of the combination meter

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Check the fog lamps.
When the fog lamp switch is operated, check that the 
fog lamps illuminate/go off normally.

Q: Is the check result normal?

YES : 

Go to Step2.

NO : 

Refer to Inspection Procedure K-2 "Any of 
the fog lamps does not illuminate 

P.54C-165

."

Step 2. M.U.T.-III CAN bus diagnostics
Use the M.U.T.-III to diagnose the CAN bus lines.

Q: Is the check result normal?

YES : 

Go to Step3.

NO : 

Repair the CAN bus line (Refer to GROUP 
54D, Diagnosis 

P.54D-13

).

INPUT SIGNAL

ETACS-ECU

COMBINATION
METER

CAN COMMUNICATION LINE
(CAN_L LINE)

CAN COMMUNICATION LINE
(CAN_H LINE)

FOG LAMP SWITCH

Fog Lamp Indicator Lamp Circuit

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TOC

SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-169

Step 3. M.U.T.-III other system diagnosis code
Check whether the combination meter-related diag-
nosis code is set.

Q: Is the diagnosis code set?

YES : 

Diagnose the combination meter (Refer to 

GROUP 54A 

− Troubleshooting 

P.54A-31

).

NO : 

Go to Step4.

Step 4. ECU check by using the SWS monitor
Check that the power supply and earth lines to the 
ETACS-ECU and the SWS communication lines are 
normal.

• Ignition switch: OFF

ECU TO BE CHECKED

• ETACS ECU

OK: "OK" is displayed on the "ETACS ECU" 
menu.

Q: Is the check result normal?

YES : 

Go to Step 5.

NO : 

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

P.54C-41

."

Step 5. M.U.T.-III actuator test
Perform the actuator test for the combination meter, 
and check that the fog lamp indicator illuminates 
(Refer to GROUP 54A 

− Combination Meter 

P.54A-62

).

Q:  Is the check result normal?

YES : 

Replace the ETACS-ECU.

NO : 

Replace the combination meter.

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Index

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SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-170

FLASHER TIMER

INSPECTION PROCEDURE L-1: The turn-signal lamps do not illuminate.

CAUTION

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

COMMENTS ON TROUBLE SYMPTOM

If all the turn-signal lamps do not illuminate, the igni-
tion switch (IG1), the turn-signal lamp switch input 
circuit or the ETACS-ECU may be defective.

POSSIBLE CAUSES

• Malfunction of the column switch

• Malfunction of the ETACS-ECU

• Damaged harness wires and connectors

DIAGNOSIS PROCEDURE

Step 1. Check that the hazard warning lamps 
operate.
Check that the hazard warning lamps illuminate nor-
mally.

Q: Is the check result normal?

YES : 

Go to Step 6.

NO : 

Go to Step 2.

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

ETACS-ECU

TURN-SIGNAL
LAMP RELAY: LH

TURN-SIGNAL
LAMP RELAY: RH

· FRONT COMBINATION
  LAMP (TURN: LH)
· SIDE TURN-SIGNAL
  LAMP (LH)

REAR COMBINATION
LAMP (TURN: LH)

REAR COMBINATION
LAMP (TURN: RH)

· FRONT COMBINATION 
  LAMP (TURN: RH) 
· SIDE TURN-SIGNAL 
  LAMP (RH)

FUSIBLE
LINK

1

Turn-Signal Lamp Power Supply Circuit

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SYMPTOM PROCEDURES

SMART WIRING SYSTEM (SWS) USING SWS MONITOR

54C-171

Step 2. Connector check: B-134 ETACS-ECU 
connector.

Q: Is the check result normal?

YES : 

Go to Step 3.

NO : 

Repair the defective connector.

Step 3. Voltage measurement at the B-134 
ETACS-ECU connector.

(1) Remove the ETACS-ECU, and measure at the 

junction block side.

(2) Voltage between B-134 ETACS-ECU connector 

terminal No.5 and body earth

OK: System voltage

Q: Is the check result normal?

YES : . 

Go to Step 7.

NO : . 

Go to Step 4.

Step 4. Check the wiring harness between B-134 
ETACS-ECU connector terminal No.5 to the 
fusible link (1).

NOTE: 

Prior to the wiring harness inspection, check junction 
block connector B-108, and repair if necessary.

• Check the power supply line for open circuit.

Q: Is the check result normal?

YES : 

Go to Step 7.

NO : 

Repair the wiring harness.

AC313826

Connector: B-134

AG

Junction block side

Junction block (Rear view)

AC313826

Connector: B-134

AG

Junction block side

Junction block (Rear view)

AC310507 FG

Connector B-134
(Junction block side)

AC313826

Connector: B-134

AG

Junction block side

Junction block (Rear view)

AC313824 AG

Connector: B-108

Harness side

Junction block (Front view)

B-108 (B)

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