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Diagnostic Trouble Code (DTC) Information
Diagnostic trouble code (DTC) information ECM-9220
Condition
The diagnostic trouble code (DTC) is stored if the engine control module (ECM) registers a fault in the signal from the throttle position (TP) sensor, potentiometer 2 (circuit 2) in the electronic throttle unit.
The diagnostic trouble code (DTC) can be diagnosed when the ignition is switched on.
Substitute value
The throttle angle is calculated using potentiometer 1 (circuit 1) in the throttle position (TP) sensor for the throttle unit. If the diagnostic trouble codes (DTCs) for both potentiometers 1 and 2 are stored at the same time, the supply to the damper motor in the throttle unit will be disabled. 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 electronic throttle unit
- The signal cables are short-circuited to each other
- Damaged throttle unit.
Fault symptom[s]
- Poor performance.