TT Roadster L4-1.8L Turbo (AWP) (2003)
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.