Pre-Diagnosis Inspection

Visually inspect ABS components for possible cause of anti-lock problem. Visual inspection may help identify cause of a simple malfunction. Ensure ABS warning light is functioning properly. See TROUBLE SHOOTING  .

ABS warning light illuminates under the following conditions:

1. Vehicle operated on snow or ice with parking brake activated, or a dragging brake at one wheel.
2. Different size tires being used.
3. Tires with different traction characteristics are used on same axle.
4. Vehicle is jacked up and drive wheels spin for 20 seconds or more with ignition on.
5. Low battery voltage.

If ABS warning light illuminates because of these conditions, turn ignition off, then back on. ABS warning light will go out and no DTCs for described conditions will be stored in ABS control module memory.