6. Troubleshooting
In this chapter, several malfunctions are mentioned combined with possible causes
and solutions. Please leave servicing to qualified mechanics.
6.1 Wiper does not work after switching on
• Possible causes:
1.
Wiper switch is not working properly.
Solution:
Test and replace it. Check if the current is (and keeps being) too high.
2. Burned or incorrectly sized fuse.
Solution:
Test and replace it. Check if the current is (and keeps being) too high.
3. Electrical connections are wired incorrectly or might be damaged.
Solution:
Measure the voltage across the motor and check all connections are correct.
4. The wiper motor has failed.
Solution:
Replace the motor and check for excessive drag or high current.
6.2 Wiped area or park position is not correct
• Possible causes:
1.
The wiper arm was placed without parking the motor first.
Solution:
Remove the wiper arm. Run the motor to the park position and re-install the
arm.
2. The wipe arc is set wrong or has changed due to high loads (e.g. spring pressure of
arms too high, excessive drag).
Solution:
Determine the wiping arc if needed (see paragraph 5.4) and set the wiping arc
again (see paragraph 5.3).
3. The wires are connected incorrectly.
Solution:
Check and reconnect the wiring (see the scheme in paragraph 3.3).
16
MANUAL WIPER SYSTEMS
