Faulty Signal - Permanent Fault

ECM-9520 ACCELERATOR PEDAL (AP) POSITION SENSOR, FAULTY SIGNAL
FAULTY SIGNAL - PERMANENT FAULT

Checking component and wiring



The engine control module (ECM) has detected a fault in the accelerator pedal (AP) position sensor pulse width modulation (PWM) signal. Replace accelerator pedal (AP) position sensor according to Accelerator Pedal Module, Replacing

Other information
- For information about signals, see Diagnostic Parameters and Pinout Values. Signal Description, ME7, B5XX4T


Verification



Hint: After carrying out the repair, check that the fault has been remedied.

- Ignition off.
- Reinstall connectors, components etc.
- Ignition on.
- Read of the pulse modulated signal. Try depressing and releasing the accelerator pedal (AP). The value is between 6-9% when the accelerator pedal (AP) is unaffected and 85-90% when the accelerator pedal (AP) is fully depressed.

Do the values correspond?
Yes - Testing Complete.
No - Continue below.


Fault-tracing information
The fault should have been detected and remedied. As this is not the case fault-tracing has failed. Exit fault tracing for this diagnostic trouble code (DTC) or make another attempt.