The Windshield Wipers Do Not Work At All - Mitsubishi Electric Lancer Evolution-VII Workshop Manual

Inspection Procedure E-1

The windshield wipers do not work at all.

Either the windshield wiper motor, the column switch, or the front-ECU may be
defective.
MUT-II diagnosis code
Is an ETACS-ECU diagnosis code output?
Check the windshield wiper motor (Refer to GROUP 51 -
Windshield Wipers and Washer).
Measure at the windshield wiper motor connector B-01.
D Disconnect the connector and test on the harness side.
D Continuity between terminal 5 and body earth.
OK : Continuity confirmed.
Measure at the front-ECU connector A-11X
D Disconnect the connector and test on the harness side.
D Ignition switch ON
D Continuity between terminal 30 and body earth.
OK : System voltage
Replace front-ECU.
Inspection Procedure E-2
The windshield wipers only operate at LO speed (though
the wipers and washer can be switched OFF).
If the windshield wipers only operate at LO speed regardless of the switch
position, the windshield wiper fail-safe function is probably activated. Or the
ETACS-ECU ignition switch (ACC) signal may be controlling the wiper operation.
MUT-II diagnosis code
Is an ETACS-ECU diagnosis code output?
Check the MUT-II input signals.
D Ignition switch (ACC)
Replace front-ECU.
SWS -
NO
OK
OK
OK
NO
OK
Troubleshooting
Probable cause
D Windshield wiper motor fault
D Column switch fault
D front-ECU fault
D Harness or connector fault
YES
Perform the inspection procedure for the diagnosis code
(Refer to P.54B-3).
NG
Replace
NG
Check the following connector: B-01
OK
Check the trouble
symptoms.
NG
Check the harness between the windshield wiper motor and
the body earth, and repair if necessary.
NG
Check the following connectors: A-11X, C-135, C-102,
C-209, C-210
OK
Check the trouble
symptoms.
NG
Check the harness between the front-ECU and the ignition
switch (IG2), and repair if necessary.
Probable cause
D Column switch fault
D front-ECU fault
D Harness or connector fault
YES
Perform the inspection procedure for the diagnosis code
(Refer to P.54B-3).
NG
Check the ignition switch (ACC) input circuit system (Refer to
P.54B-26, Inspection Procedure J-1).
54B-17
NG
Repair
NG
Repair