Wiper Control Module: Testing and Inspection

Wiper Motor Control Module (J400), Deactivating APP Function

Special tools, testers and auxiliary items required

• Vehicle Diagnostic Tester

The windshield wiper system is equipped with the Alternating Park Position (APP) function.

The APP function causes the wiper at every second shut off to move upward slightly after reaching the lowest position.

To install the motor crank on the wiper motor, it is necessary to shut off the windshield wiper motor in the lowest park position. This is attained by deactivating the APP function.

Note the following:

An activation of APP function is not possible.

APP function is automatically activated after 100 wiping cycles. This applies to wiper motors in which the APP function was deactivated as well as for new wiper motors.

Procedure

- Connect the Vehicle Diagnostic Tester.

- Select Guided Fault Finding in the Vehicle Diagnostic Tester.

- Use the GO TO button to select the "function/component selection" and the following menu options one after the other:

• Body

• Electrical Equipment

• 01 - On Board Diagnostic (OBD) capable systems

• 09 - Vehicle electrical system control module

• Vehicle electrical system control module functions

• Coding the wiper motor control module/deactivating the APP function