DTC ECM-9100

Diagnostic Trouble Code (DTC) Information





Condition
Diagnostic trouble code (DTC) ECM-9100 is stored if the engine control module (ECM) registers an internal fault or a fault in the circuit for the damper motor in the throttle unit when the ignition is switched on.

Substitute value
- The engine control module (ECM) shuts down the supply to the throttle unit damper motor. The throttle will set itself to the return position.

Possible source
- Contact resistance or oxidation in the terminals between the engine control module (ECM) and the throttle unit
- Open-circuit, short-circuit to ground or short-circuit to supply voltage in the wiring for the damper motor in the throttle unit
- Short-circuit to each other in the wiring for the damper motor in the throttle unit
- Defective throttle unit
- Defective engine control module (ECM).

Fault symptom[s]
- Malfunction indicator lamp (MIL) lit
- Poor performance.