DTC ECM-9400

Condition







Diagnostic trouble code (DTC) ECM-9400 is stored in the engine control module (ECM) if the engine control module (ECM) registers a fault in the signal from the brake pedal sensor.

Substitute value
cruise control shut off.

Possible source

Signal too high:
- short-circuit to ground in the signal cable
- defective brake pedal position sensor.

Signal too low:
- short-circuit to ground in the signal cable
- defective brake pedal position sensor.

Faulty signal:
- contact resistance in terminals
- defective brake pedal position sensor.

Fault symptom[s]
- Electronic throttle system warning lamp lights
- cruise control does not function at all.