Table of contents: Is the wiper motor or supply wire… ↓ Removal the windshield wiper motor ↓ Installing a new wiper motor ↓
Is the wiper motor or supply wire faulty?
The following check will help you identify a faulty windshield wiper motor or wiring:
Remove the trim above the water catch basin at the rear of the engine compartment.
Disconnect the wiper motor multi-pin connector.
Now you need to run two auxiliary wires: one from the positive terminal of the battery to terminal 53 or 53b (connections of black-gray or green-yellow wires).
The second wire is routed from the negative battery terminal to terminal 31 of the windshield wiper motor.
The windshield wiper should now operate at either speed one or two, depending on which terminal you select for connection. Otherwise, the windshield wiper motor is faulty.
If the windshield wiper starts working, then the fault lies in the switch or in the supply wiring.
Removal the windshield wiper motor
Turn on the ignition and allow the windshield wipers to return to their original position.
Remove the windshield wiper arms.
Remove the black plastic cover of the water collection tank by lifting it up along the front edge.
Remove the two hex bolts at the top of the wiper shafts and one at the bottom of the motor.
Disconnect the wiper motor multi-pin connector.
Remove the windshield wiper arms together with the motor.
Disconnect the rods from the wiper shafts.
Remove the three screws on the windshield wiper motor. To access all the screws, you need to turn the motor crank.
Installing a new wiper motor
If a new engine is installed or an old one after repair, you should pay attention to:
Connect the engine electrics and let it run for a short time. Switch it off and wait until it returns to its original position.
Place the engine on the console, install the drive crank and windshield wiper arms.
The drive lever for the left wiper axle is placed on the engine crank from below, the right wiper axle is connected to the engine crank from above.
Now tighten the engine crank so that it is in the position shown in the figure below on the right.
If the drive crank is not secured in a certain position, the levers will move downwards when the movement starts.
Installing the wiper arms: The mounting screws should be tightened quite loosely, they sit in plastic bushings!
[The full version is posted on the resource «AudiManual.ru»]