WW
WW
WW
WW Wiper
Wiper
Wiper
Wiper and
and
and
and Washer
Washer
Washer
Washer System
System
System
System
-
93
-
Diagnostic
Diagnostic
Diagnostic
Diagnostic Test
Test
Test
Test
Troubleshooting
Troubleshooting
Troubleshooting
Troubleshooting
4. Fault mode: No operation at INT gear only
Step Operation
Yes
No
1
Remove the wiper relay and shift the ignition switch to ON and shift the wiper
switch to internal gear. Measure the voltage of relay pin with a digital multimeter
and verify whether the voltage is normal.
Go to Step 4 Go to Step 2
2
Remove the wiper switch and inspect it to confirm that there are no faults in it.
Replace or repair it if necessary.
Go to Step 3
3
Inspect the instrument panel wire harness between the wiper switch and the wiper
relay, repair the harness if necessary.
Go to Step 7
4 Inspect the ground wire at the relay for its good grounding. Go to Step 6 Go to Step 5
5 Repair the ground wire and confirm whether it is in good grounding.
6 Replace the wire relay and confirm whether the system is intact.
7
Inspect the instrument panel wire harness between the wiper switch and the relay
and confirm that there are no faults in it.
Go to Step 8 Go to Step 10
8
Remove the new wiper relay and measure the voltage of the relay with a digital
multimeter to verify whether the voltage is normal.
Go to Step 10
9
Inspect the instrument panel wire harness and repair it if necessary. Confirm that
there are no faults in it.
Go to Step 10
10
Inspect the instrument panel wire harness between the relay and the wiper motor
and repair the instrument panel if necessary. Confirm that there are no faults in it
and verify whether the system is intact.
5. Fault mode: No operation of the washer
Step Operation
Yes
No
1 Remove the wiper/washer switch and shift the ignition switch to ON. Measure
the pin voltage of the switch at its original position with a digital multimeter to
verify whether the voltage is normal.
Go to Step 3 Go to Step 2
2 Inspect the instrument panel wire harness between the fuse and the wiper/washer
switch. R epair the instrument panel if necessary and confirm that there are no
faults in it
Go to Step 3
3 Inspect the internal structure of the wiper switch, replace or repair if necessary.
Confirm that there are no faults in the switch and verify whether the system is
intact.
Go to Step 4
4 Install the wiper/washer switch. Disconnect the washer motor connector and shift
the wiper/washer switch to WASHING. Measure the pin voltage of the washer
motor at its connector (the side of wire harness) with a digital multimeter to
verify whether the voltage is normal.
Go to Step 6 Go to Step 5
5 Inspect and repair the wire harness between the wiper/washer and the washer
motor according to relevant circuit diagrams.
Go to Step 6
6 Inspect the instrument panel wire harness between the wiper motor and the
wiper/washer switch according to relevant circuit diagrams and verify whether it
is intact.
Go to Step 7
7 Replace the washer motor and verify whether the system is intact.
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