Diagnostic Trouble Code (DTC) Information

Diagnostic trouble code (DTC) information ECM-9400

Condition




The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers that there is a fault in the PWM signal from the accelerator pedal (AP) position sensor, or that the difference between the analog signal and the PWM signal from the accelerator pedal (AP) position sensor to the engine control module (ECM) is too great.
The diagnostic trouble code (DTC) can be diagnosed when the engine is running.

Substitute value
The accelerator pedal (AP) does not function while the brake pedal is pressed.

Possible source
- Contact resistance or oxidation in the terminals between the accelerator pedal (AP) position sensor and the engine control module (ECM)
- Damaged accelerator pedal (AP) position sensor.

Fault symptom[s]
- Poor accelerator pedal (AP) response
- Cruise control does not function at all.