P1578

P1578

428 Accelerator pedal position sensor 2 - signal implausible

Diagnosis conditions
- Ignition on (approx. 30 sec.)
- Battery voltage greater than 7 V

Possible fault cause
- Pedal sensor

NOTE:
- The system operates in pedal sensor standby mode, i.e. the angle of the accelerator pedal is calculated from the residual position sensor signal.
- The maximum pedal value is limited to 30 %.
- The dynamic is limited.

Diagnosis/troubleshooting







428 Accelerator pedal position sensor 2 - below limit

Diagnosis conditions
- Ignition on (approx. 30 sec.)
- Battery voltage greater than 7 V

Possible fault cause
- Short circuit to ground
- Pedal sensor

Affected terminals
Terminal IV/13

NOTE:
- The system operates in pedal sensor standby mode, i.e. the angle of the accelerator pedal is calculated from the residual position sensor signal.
- The maximum pedal value is limited to 30 %.
- The dynamic is limited.

Diagnosis/troubleshooting







428 Accelerator pedal position sensor 2 - above limit

Diagnosis conditions
- Ignition on (approx. 30 sec.)
- Battery voltage greater than 7 V

Possible fault cause
- Short circuit to B+
- Pedal sensor

Affected terminals
Terminal IV/13

NOTE:
- The system operates in pedal sensor standby mode, i.e. the angle of the accelerator pedal is calculated from the residual position sensor signal.
- The maximum pedal value is limited to 30 %.
- The dynamic is limited.

Diagnosis/troubleshooting