Contents: Terminal Designations ↓ Examination ↓
The wiper motor is located in the water box under the windshield, at the rear wiper in the trunk door. To check, you need to remove the corresponding fence. Below is a description of checking the windshield wipers. In the case of the rear window wiper, do the same.
Terminal Designations
The motor terminals are standardized:
- terminal 31, ground connection (common in the electrical system of the machine);
- terminal 53 receives voltage for the first speed of the wipers;
- terminal 53a supplies positive current (+) for the end position of the wiper: the motor receives voltage through the sliding contact until the wipers reach their initial, non-working position if the driver turns off the wipers;
- terminal 53b supplies voltage for the second speed wipers (secondary final winding);
- via terminal 53e the engine is braked during reverse movement after switching off, so that the wipers do not fall below the idle position;
- not available everywhere: terminal 53c supplies voltage to the electric windshield washer water pump; terminal 53i is available for permanent magnet wiper motors with a third brush (for increased wiper speed).
Examination
1. First, find out what is faulty: the wiper motor or no voltage. To do this, disconnect the multi-pin plug from the wiper motor.
(The original information is posted on the resource VWmanual)
2. Using two additional wires, connect voltage (+) and (-) from the battery to the engine:
- one wire from the positive pole of the battery is connected to terminal 53 or 53b;
- the second from the negative pole of the battery to terminal 31 of the engine.
3. The wiper motor, depending on the connected terminal, should work on stage I or II. If not, the motor or the corresponding stage is faulty. Remove the wiper motor.
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