Faulty Wheel Speed Sensor Input
- Trouble code will be set if ECM detects wheel speed sensor has no input signal. Trouble code will also be set if wheel speed sensor voltage output is low while vehicle is driven. Inspect wheel speed sensor wiring harness for open. If open is not found, go to next step. If open is found, replace wheel speed sensor.
- Test wheel speed sensor. See WHEEL SPEED SENSOR under DIAGNOSIS & TESTING. Replace wheel speed sensor as necessary. Ensure wheel speed sensor-to-rotor gap is within specification. See WHEEL SPEED SENSOR under ADJUSTMENTS.