Mitsubishi Colt Ralliart. Manual - part 355
SYMPTOM PROCEDURES
SMART WIRING SYSTEM (SWS) NOT USING SWS MONITOR
54B-164
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 Step 2.
NO :
Refer to Inspection Procedure K-2 "Any of
the fog lamps does not illuminate
."
Step 2. Check the power supply circuit.
When the ignition switch is turned to the LOCK
(OFF) position, check if the hazard warning lamps
illuminate.
Q: Is the check result normal?
YES :
Go to Step 3.
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
."
Step 3. 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 Step 4.
NO :
Repair the CAN bus line (Refer to GROUP
54D, Diagnosis
Step 4. 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
NO :
Go to Step 5.
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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