## Diesel Engine Management System

#### DTC Troubleshooting (cont'd)

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DTC P1001: Injector High Side Circuit Over Current

1. 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.

1. Turn the ignition switch OFF.

1. Disconnect the ECM connector.

1. Measure resistance between the all injector circuit.

Is there about 0.2 – 0.3 &ohm; (At room temperature: about 20°C (68°F))?

YES – Replace applicable injector.

NO – Go to step 5.

1. Disconnect all injector connectors.

1. Check the all injector power supply circuits and ground circuit for short.

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