SWS ± Troubleshooting
54B-26
Inspection Procedure G-1
Rear wiper and washer: Rear wiper does not work
normally.
Probable cause
The ETACS-ECU operates the rear wiper according to the input signals from the
following switches:
D Ignition switch (ACC)
D Rear wiper switch
If the rear wiper does not work normally, the relevant input signal circuit, the
rear wiper motor, the column switch or the ETACS-ECU may be defective.
D Malfunction of rear wiper motor
D Malfunction of column switch
D Malfunction of front-ECU
D Malfunction of harness wire or connector
MUT-II input signal check
D Ignition switch (ACC)
D Rear wiper switch
NG
Check the defective input circuit. (Refer to P.54B-13, Defects Found
by Input Signal Check.)
OK
Check the rear wiper motor. (Refer to GROUP 51 ± Rear Wiper
and Washer.)
NG
Replace
OK
Measure at rear wiper motor connector F-05.
D Disconnect connector and measure at harness side.
D Continuity between terminal 1 and body earth.
OK: Continuity
NG
Check the following connector:
F-05
NG
Repair
OK
Check trouble symptoms.
NG
Check the harness wire between rear wiper motor and body earth.
NG
Repair
OK
Check trouble symptoms.
OK
Replace the front-ECU.
OK
Check the following connectors:
C-68, C-82, D-15, F-05
NG
Check the harness wire between rear wiper motor and ETACS-ECU.
NG
Replace
Inspection Procedure G-2
Rear wiper and washer: Rear wiper does not stop at the
predetermined park position.
Probable cause
The rear wiper motor or the ETACS-ECU may be defective. D Malfunction of rear wiper motor
D Malfunction of front-ECU
D Malfunction of harness wire or connector
MUT-II input signal check
D Rear wiper auto-stop signal
NG
Check the rear wiper auto-stop signal input circuit. (Refer to
P.54B-41, Inspection Procedure N-9.)
OK
Replace the ETACS-ECU.
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