Conditions for Setting the DTC
WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.
A malfunction is detected if one or more of the following conditions exist:
- The steering angle sensor detects an internal malfunction and sends a CAN message to the EBCM.
- If the offset value is higher than 15 degrees, a malfunction is detected. Malfunction time depends on driving distance, vehicle speed and the amount of malfunctioning steering angle signal.
- Rapid changes of the steering angle sensor signal cannot occur under normal driving conditions. If the signal change is higher than 2000 degrees per second or steering angle acceleration is higher than 37500 degrees per second squared, a malfunction is detected.
- A reference steering angle signal based on a vehicle model is used to check the actual steering angle. If the measured steering angle varies from the reference steering angle by more than a predetermined value, a malfunction is detected.