Front

Front speed sensor wiring, removing and installing
Special tools and equipment





^ VAS 1978 Wiring harness repair kit

Removing:
- Obtain radio code on vehicles with coded radio.
- Disconnect battery.





- Disconnect intake hose -1- and connector -2- off mass air flow sensor.
- Remove bolts -3-, -4- and -5-.
- Remove air cleaner complete.





- Release control module connector (arrow -1-) and pull off (arrow -2-).





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





- Release secondary locking device (violet) in direction of arrow with a little screwdriver.





Contact assignment of connector T25 wiring harness/ ABS Control Module (w/EDL) -J104
Contact Connected to component
19 + 20 Right Front ABS Wheel Speed Sensor -G45
1 + 2 Left Front ABS Wheel Speed Sensor -G47





- Push out relevant contacts with an ejection tool from wiring harness repair kit VAS 1978.
- Separate connector from speed sensor wiring and speed sensor.





- In addition, disconnect connection -1- on vehicles with a brake pad wear indicator.
- Unclip the wiring from retainer -2-.
- Remove the faulty speed sensor wiring.

Installing
- Route the new speed sensor wiring.
- Connect speed sensor to speed sensor wiring.





- Clip in speed sensor wiring -arrows-.
Make sure the wiring is not twisted when installing the speed sensor wiring in the wheel housing.
- Insert brake wear indicator connector into retainer on suspension strut.
- 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.