Mitsubishi Electric Lancer Evolution-VII Workshop Manual page 494

Inspection Procedure J-3
No hazard warning lamp switch signal input to
ETACS-ECU.
As the hazard warning lamp switch input signal is used to control the operation
of the following functions, any abnormality in this signal prevents these functions
operating normally.
D Hazard warning lamps
Check the hazard warning lamp switch (Refer to GROUP 54A).
Measure at the hazard warning lamp switch connector C-03.
D Disconnect the connector and test on the harness side.
D Continuity between terminal 2 and body earth
OK : Continuity confirmed.
Check the following connectors: C-03, C-228
OK
Check the trouble
symptoms.
NG
Check the harness between the hazard warning lamp switch
and the ETACS-ECU, and repair if necessary.
Replace ETACS-ECU.
SWS -
OK
OK
NG
Repair
OK
Troubleshooting
Probable cause
D Hazard warning lamp switch fault
D ETACS-ECU fault
D Harness or connector fault
NG
Replace
NG
Check the following connectors: C-03, C-08
OK
Check the trouble
symptoms.
NG
Check the harness between the hazard warning lamp switch
and earth.
NG
Repair
54B-27
NG
Repair