Accelerator Pedal Module: Diagnosis

The maximum engine output is limited in the event of a fault. The vehicle has a delayed response to abrupt movements of the accelerator pedal. If two faults occur simultaneously, the engine speed is limited to max. 1500 rpm. The relevant fault codes are stored on the DME identifying the faulty Hall-effect sensor.

The following faults can be detected:

• Hall-effect sensor short circuit
• Signal above Hall-effect sensor voltage range
• Signal below Hall-effect sensor voltage range
• Implausible difference between signal levels of the two Hall-effect sensors
• Power supply failure or voltage too low