When the vehicle is road tested after replacement of an axle shaft, the ABS warning light turns on. Technician A says count the number of teeth on the toner ring of the old axle and compare it to the new axle. Technician B says perform an ABS speed sensor relearn procedure. Who is correct?
A)A only
B)B only
C)both A and B
D)neither A nor B

Question

Quizplus · Accepted Answer

Technician A is correct because if the number of teeth on the toner ring of the new axle differs from the old one, it can cause the ABS system to malfunction, triggering the ABS warning light. The ABS system relies on the toner ring to monitor wheel speed; a mismatch in the number of teeth can lead to incorrect readings. Technician B's suggestion of an ABS speed sensor relearn procedure might not address the root cause if the issue is with the toner ring's tooth count.

When the Vehicle Is Road Tested After Replacement of an Axle