Test Description

WARNING: This page is about a different car, the 2002 Pontiac Grand Am, 2002 Oldsmobile Alero, 2002 Chevrolet Monte Carlo, and 2002 Chevrolet Impala. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step numbers in the diagnostic procedures.

4

This step isolates the condition. If the test light blinks, the PCM is providing ground to the fuel injector. On some vehicles the Camshaft Position (CMP) sensor must provide a signal to the PCM before the PCM will provide a ground to the fuel injector. For this reason, the CMP circuits between the fuel injector harness multi-way connectors must be jumpered.

5

This step tests if a ground is constantly being applied to the fuel injector.

6

This step isolates the circuit between the multi-way connector and the PCM. An open or short to voltage on the fuel injector control circuit will not allow the test light to blink.

8

This step inspects for fuel injector harness damage between the multi-way connector and the upper intake manifold. Careful inspection may isolate the condition before removal of the upper intake manifold.

13

This step isolates the circuit between the multi-way connector and the fuel injector. A short to voltage on the fuel injector control circuit will set this DTC.