WW Wiper
Wiper
Wiper
Wiper and
and
and
and Washer
Washer
Washer
Washer System
System
System
System
- 92 -
Diagnostic
Diagnostic
Diagnostic
Diagnostic Test
Test
Test
Test
Troubleshooting
Troubleshooting
Troubleshooting
Troubleshooting
1. Fault mode ： No matter what gear is the wiper switch at, there are no operations of the wiper and washer.
Step Operation
Yes
No
1 Inspect the wiper fuse for the existence of damage. Go to Step 3 Step 2
2
Remove the wiper switch, inspect it and confirm that there are no faults in it.
Then measure the wire harness with a digital multimeter.
Inspect the voltages from the connector to the wiper switch and verify whether
they are normal.
Go to Step 5 Go to Step 4
3 Replace the damaged fuse. Go to Step 2
4
Inspect the instrument panel wire harness between the fuse and the wiper switch
and repair if necessary.
Go to Step 5
5
Verify the existence of good contact between the wiper switch and wire harness
connector.
Disconnect the wire harness and wiper motor, inspect the instrument panel wire
harness among the wiper switch, the fuse and the wiper motor according to
relevant circuit diagrams. Repair the harness if necessary.
Go to Step 6
6
Inspect the wiper motor and repair if necessary. Confirm that there are no faults
in the wiper motor and verify the existence of good contact of the wiper motor
connector.
Go to Step 7
—
7
Inspect the ground wire of the wiper motor in the instrument panel wire harness
and repair if necessary.
Go to Step 8
8 Verify whether the system is intact.
2. Fault mode: No operation at HI gear
Step Operation
Yes
No
1
Disconnect the wire harness from the wiper motor. Measure the voltage at wire
harness side with a digital multimeter and verify whether the voltage is normal.
Go to Step 2 Go to Step 3
2 Inspect the internal structure of the wiper motor, replace or repair if necessary.
3
Remove the wiper switch and inspect it to confirm that there are no faults in it.
Inspect the instrument panel wire harness between the wiper switch and the wiper
motor. Repair the instrument panel wire harness if necessary.
3. Fault mode: No operation at LOW gear
Step Operation
Yes
No
1
Disconnect the wire harness connector from the wiper motor. Measure the
voltage at wire harness side with a digital multimeter and verify whether the
voltage is normal.
Go to Step 2 Go to Step 3
2 Inspect the internal structure of the wiper motor, replace or repair if necessary.
3
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 4
4
Inspect the instrument panel wire harness between the wiper switch and the wiper
motor. Repair the instrument panel wire harness if necessary.
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