Pinpoint Test Ag : Abs (Anti-Lock Brake System) False Activation, Abs (Anti-Lock Brake System) Too Sensitive, Abs (Anti-Lock Brake System) Activates On Normal Stop: Notes

Refer to Supplemental Restraint System for schematic and connector information.

Normal Operation and Fault Conditions 

The ABS module uses several sensors (wheel speed, steering wheel rotation, stability control in the RCM) to determine if ABS or stability control intervention is required. Accurate sensor readings rely on the vehicle being in good operational condition with as few mechanical and electrical concerns as possible. In addition, the wheels and tires must be within vehicle manufacturer's specifications as described on the VC label and the base brake system and parking brake system must be in good operational condition. If one or more of these items or systems are in need or repair or are not working at full capacity, the ABS or stability control system may activate when the driving condition does not warrant activation.

Possible Causes 

• Wheels
• Tires
• Suspension components
• Parking brake shoes out of adjustment (dragging)
• Steering wheel rotation sensor
• RCM