Volvo Workshop Manuals
XC90 AWD L6-2.9L Turbo VIN 91 B6294T (2004)
Sensors and Switches > Sensors and Switches - Brakes and Traction Control > Wheel Speed Sensor > Component Information > Technical Service Bulletins > Customer Interest: > TJ17144 > May > 10 > Brakes - ABS Lamp ON/Wheel Speed Sensor DTC's Set > Page 1782
It may happen that metal particles get trapped on the magnetic ABS (Antilock Brake System) encoder ring (located on the rear wheel hub) which may
Analysis show that the metal particles may originate from factory and in some cases also from the road while driving.
If any of these DTC's occur it may indicate a problem with the toothed wheel sensor or the rear hub.
First inspect the hub for any metal particles possibly trapped on the ABS encoder ring (Refer to picture in attachment).
If a metal particles are found do not replace the hub remove them from the hub and also inspect the encoder ring for possible damages.
Do not use a magnet to remove the metal particle since this could damage the encoder ring.
Reinstall and test drive the vehicle to verify repair before releasing it to customer.
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