TT Quattro Roadster L4-1.8L Turbo (AMU) (2002)
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Rotate wheel hub and check gap between shutter wheel and wheel speed sensor for uniformity (run-out tolerance). Incorporate wheel bearing play
into this test.
Run-out tolerance of the shutter wheel is 0.3 mm.
Replace the shutter wheel together with the wheel hub if a mechanical wheel speed sensor malfunction is diagnosed by the ABS control module
(w/EDL) -J104- that is influencing its signal without authorization, no damage can be found at the wheel speed sensor and the run-out tolerance is
not being maintained.
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Check shutter wheel of wheel speed sensor for soiling.
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Clean shutter wheel if shutter wheel holes are plugged with dirt.