audi Workshop Repair Guides

Audi Workshop Service and Repair Manuals

ABS/ESP ITT Mark 20|Rear > < ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE|Front|Page 4869
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Wheel Speed Sensor: Testing and Inspection
Front

Rotor, checking

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Raise vehicle.

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Remove wheel.

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Check rotor for dirt and damage by rotating brake disc.

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If rotor is damaged, wheel hub must be removed together with rotor and replaced.

Checking rotor lateral run-out

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Turn wheel hub and check that gap -a- between rotor and speed sensor is uniform.

Distance a = 0.3 mm

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If lateral run-out is out of tolerance, remove and replace wheel hub with rotor.

ABS/ESP ITT Mark 20|Rear > < ABS/EDL and ABS/EDL/ASR ITT Mark 20 IE|Front|Page 4869