C1237-1: Check Toothed Sensor Ring

- Raise vehicle on hoist.

- Carefully inspect toothed front brake anti-lock sensor indicator and rear brake anti-lock sensor indicator at each wheel, for missing teeth, loose/missing ring.

- Is ring damaged or missing?

YES -- Replace damaged or missing ring(s) as necessary.

NO -- Go to C1237-2. C1237-2: Check Wheel Spin Effort