Checking the Cable

HINT: The fault could also have been caused by the windshield wipers sticking. 

If the fault is intermittent, it has been registered previously but is no longer present. Intermittent faults can be caused by interference at start up of the central electronic module (CEM) or may be a different type of fault which occurs on different occasions. The fault is evaluated depending on how it occurs.

Check the cable between the central electronic module (CEM) and the windshield wiper motor (6/1). Check for a short-circuit to ground.

Take readings between Central electronic module (CEM) terminal #C31 (#31) and the windshield wiper motor (6/1) #3.

Check the cable between the central electronic module (CEM) and the rain sensor (7/149). Check for a short-circuit to ground.

Take readings between Central electronic module (CEM) terminal #D11 (#11) and rain sensor (7/149) #4.

Also check the connectors.

If no other faults are found try a new windshield wiper motor (6/1).

Remedy as necessary.

Other information 

• See Connecting the Breakout Box
• See Signal Specification
• See Motor, Windshield Wiper, Replacing

• Continue 

  Refer to Verification