Diagnostic trouble code (DTC) information
Condition
Diagnostic trouble code (DTC) ECM-9530 is stored if the engine control module (ECM) registers a fault in the PWM signal from the accelerator pedal (AP) position sensor when the ignition is switched on
Substitute Value
The accelerator pedal (AP) is not working at all at the same time as the brake pedal is pressed.
Possible Source
Signal too high:
- Short-circuit to supply voltage in the signal cable
- Defective accelerator pedal (AP) position sensor.
Signal too low:
- Contact resistance or oxidation in the terminals between the engine control module (ECM) and the accelerator pedal (AP) position sensor
- Open-circuit or short-circuit to ground in the signal cable
- Open-circuit in the power supply (12V) for the accelerator pedal (AP) position sensor
- Defective accelerator pedal (AP) position sensor.
Fault symptom[s]
- Poor accelerator pedal (AP) response.