Mitsubishi Electric Lancer Evolution-VII Workshop Manual page 495

54B-28
Inspection Procedure J-4
No fog lamp switch signal input to ETACS-ECU.
When the rear fog lamp switch input signal fault occurs, the rear fog lamp
switch signal is not transmitted to the SWS communication line.
Check the rear fog lamp switch (Refer to GROUP 54A - Rear
Fog Lamp).
Measure at the rear fog lamp switch connector C-137.
D Disconnect the connector and test on the harness side.
D Continuity between terminal 6 and body earth
OK : Continuity confirmed.
Check the following connectors: C-137, C-227
Check the harness from the rear fog lamp switch to
ETACS-ECU.
Check the trouble symptoms.
Replace ETACS-ECU.
SWS -
OK
OK
OK
OK
NG
Troubleshooting
Probable cause
D Rear fog lamp switch inoperative
D ETACS-ECU fault
D Harness or connector fault
NG
Replace
NG
Check the following connectors:
C-137, C-102 <L.H. drive vehicle>
C-137, C-08 <R.H. drive vehicle>
OK
Check and repair the harness from the rear fog lamp switch
to the body earth.
NG
Repair
NG
Repair
NG
Repair