Front

ABS wheel speed sensor wire, replacing

Note: Always use repair kit VAS 1978 for repairs on wiring harnesses and connectors.

Special tools and equipment





^ Wiring harness repair kit VAS 1978

Removing





^ Remove screws (arrows).
^ Remove forward left-hand cover panel (arrows).





^ If installed, disconnect secondary air intake hose -1- from air cleaner.
^ Disconnect air hose -2- from mass air flow sensor.
^ Unplug connector -3- from mass air flow sensor.
^ Unscrew bolts -4- and -5-.
^ Remove air cleaner housing.





^ Release control unit connector (arrow -1-) and unplug (arrow -2-).





^ Release cap on multi-pin connector with a screwdriver and remove.





^ Release secondary catch (violet) with a small screwdriver by pressing in direction indicated (arrow).





Contact assignment of 47-pin connector on ABS Control Module (w/EDL)





^ Using a suitable ejector tool from wiring repair kit VAS 1978, push out





^ Unplug brake wear indicator connector -1- on left brake.
^ Unclip wiring from bracket -2-.
^ Release connector on wheel speed sensor and disconnect wiring.
^ Remove defective wiring for wheel speed sensor.

Installing
Install in reverse sequence; note the following points:
^ Install new wheel speed sensor wiring.





^ Clip in speed sensor wiring (arrows).

Note: Make sure sensor wire is not twisted in wheel housing.

^ Guide contacts into connector housing.





^ Push individual wiring seals in onto stop with an insertion tool from VAS 1 978.
^ Secure contacts with secondary locking device and install multi-pin connector cover cap.





Tightening torque