Right Rear Sensor Signal Failure

NAME OF CODE
- LF Sensor Signal Failure
- LR Sensor Signal Failure
- RF Sensor Signal Failure
- RR Sensor Signal Failure

WHEN MONITORED
- Comparison is checked at drive off or every 7 milliseconds
- Continuity is checked continuously
- Phase length supervision is checked every 7 milliseconds

SET CONDITION
The Control Antilock Brake (CAB) monitors the wheel speed signals at all times. If during an Antilock Brake System (ABS) stop, the CAB commands any valve solenoid on for an extended length of time, and does not see a corresponding wheel speed change, the Diagnostic Trouble Code (DTC) will set. The DTC (can also be set if vehicle speed is below 20 km/h 12 mph) and a sensor signal is missing, the trouble code will set as soon as the vehicle speed exceeds 20 km/h (12 mph). On hard acceleration, there is a 2-minute delay before the code is set to allow for possible wheel spin.

POSSIBLE CAUSES:
- Damaged teeth on tone wheel
- Missing tone wheel
- Sensor head not inserted
- Sensor head not properly mounted
- Sensor air gap too large or too small
- Failed wheel speed sensor
- Long stops on ice
- Failed CAB
- Running the vehicle on a hoist or chassis dyno
- Defective outlet valve