Checking Windshield Wipers, High and Low Speed

Checking windshield wipers, high and low speed

Checking the wiring
In the event of a fault at high speed, check the cable between the windshield wiper relay for high and low speed (2/90) terminal #5 and windshield wiper motor (6/1) terminal #2. Check for an open-circuit.

Hint: Check that relay (2/90) is functioning. When high speed is selected there must be 12 V at terminal #5.

In the event of a fault at low speed, check the cable between the windshield wiper relay for high and low speed (2/90) terminal #4 and windshield wiper motor (6/1) terminal #1. Check for an open-circuit.

Hint: Check that relay (2/90) is functioning. When low speed is selected there must be 12 V at terminal #4.

Check the ground supply (6/1) for windshield wiper motor terminal #4 at the ground terminal. Check for an open-circuit.
Check the cable between the relay for windshield wiper low speed and high speed (2/90) terminal #1 and the relay for windshield wiper on / off / interval (2/91) terminal #1. Check for an open-circuit.

Hint: The fault may have been caused by an open-circuit in the supply to the relay. The voltage must be 12 V at (2/90) terminal #1, (2/91) terminal #1 and at (2/91) terminal #5. Check in particular fuse 4 in the integrated relay / fusebox in the engine compartment.

Try replacing the windshield wiper motor according to Motor windshield wiper, replacing Motor, Windshield Wiper, Replacing.
Remedy as necessary.

Other information:
- For further information about the fuses and relays, see the Wiring Diagram
- Checking wiring and terminals Checking Wiring And Terminals.





Continue - FAULT FOUND

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