Antilock Brake System (ABS): 1131

1131 - RIGHT REAR WHEEL SPEED SENSOR ERRATIC SIGNAL





When Monitored and Set Condition

- When Monitored: The Controller Antilock Brake (CAB) monitors the wheel speed circuit every 7 milliseconds (ms).
- Set Condition: The Controller Antilock Brake (CAB) will set this DTC if the speed signal is missing or erratic.





For a complete Antilock Brake System (ABS) Circuit Diagram Refer to BRAKES SCHEMATICS AND DIAGRAMS. Schematics And Diagrams



1. VISUALLY INSPECT COMPONENTS FOR DAMAGE AND CORRECT INSTALLATION

Visually inspect the related wiring harness and connectors. Look for any chafed, pierced, pinched, or partially broken wires. Look for broken, bent, pushed out, or corroded terminals.

Visually inspect the Right Rear Wheel Speed Sensor, connector and tone wheel for damage and correct installation.

Are there any visible Sensor, connector or tone wheel concerns?

Yes

- Correct the sensor, connector or tone wheel concerns as necessary.
- Perform ABS Verification Test. ABS Verification Test

No

- Go to 2


2. MONITOR ALL WHEEL SPEED SENSORS WITH THE DRB III(R)





With the DRB III(R), erase DTCs.

Start the engine.

With an assistant to drive, use the DRB III(R) to monitor all wheel speed sensors. Slowly accelerate as straight as possible from a stop to 24 km/h (15 MPH).

Is the Right Rear Wheel Speed Sensor Signal 0 or differing from others by more than 5 km/h (3 MPH)?

Yes

- Replace the Right Rear Wheel Speed Sensor.
- Perform ABS Verification Test. ABS Verification Test

No

- Inspect and repair the related wiring harness for a possible intermittent condition.
- Perform ABS Verification Test. ABS Verification Test