Wheel Speed Sensor Wiring

Wheel Speed Sensor Wiring

Special tools, testers and auxiliary items required

• Wiring harness repair kit (VAS 1978)

Removing

- Note radio code (for vehicles equipped with coded anti-theft radio).

- Disconnect battery.

- Disconnect intake air duct - 1 - and connector - 2 - from Mass Air Flow (MAF) sensor (G70).





- Remove bolts - 3 -, - 4 - and - 5 -.

- Remove complete air filter.

- Disengage connector - arrow 1 - and disconnect - arrow 2 - from control module.





- Loosen and remove cap of multi-pin connector using a screwdriver.





- Disengage secondary engagement device (violet) in direction of - arrow - using small screwdriver.





ABS Mark 20 IE Harness Connector (T25)





Terminal assignment of harness connector (T25) wiring harness/ABS control module (J104).

ABS/EDL/ASR/ESP Mark 20 IE Harness Connector ( T47)





Terminal assignment of harness connector (T47) wiring harness/ABS control module (J104).

ABS/EDL/ASR/ESP Mark 60 Harness Connector ( T47)





Terminal assignment of harness connector (T47) wiring harness/ABS control module (J104).

- Using a prodding tool from wiring harness repair kit (VAS 1978 ), poke out the relevant terminals.





- Disconnect harness connector from wheel speed sensor wire and wheel speed sensor.

- In addition, disconnect harness connector - 1 - on vehicles with brake pad wear indicator.





- Unclip wire - 2 - from bracket.

- Remove malfunctioning wheel speed sensor wire.

Installing

- Thread new wheel speed sensor wire.

- Connect wheel speed sensor and sensor wire.

- Clip in wheel speed sensor wire - arrows -.





When installing, be sure not to twist wheel speed sensor wire in wheel housing.

- Insert connector for brake pad wear indicator into bracket at suspension strut.

- Guide terminal into connector housing.

- Push in single wire seal until stop using assembly tool from (VAS 1978).





- Secure terminals with secondary engagement device and attach multi-pin connector cap.