DTC P1001: Injector High Side Circuit Over Current
- Check the ''On Board Diagnostic (OBD) System Check''.
Was the ''OBD System Check'' performed?
YES – Go to step 2.
NO – Go to OBD System Check. 
- Turn the ignition switch OFF.
- Disconnect the ECM connector.
- Measure resistance between the all injector circuit.
Is there about 0.2 – 0.3 Ω (At room temperature: about 20°C (68°F))?
YES – Replace applicable injector.
NO – Go to step 5.
- Disconnect all injector connectors.
- Check the all injector power supply circuits and ground circuit for short.
