Test Description

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2002 GMC Savana Special, 2002 GMC Savana Camper Special, 2002 GMC Savana, 2002 Chevrolet RV Cutaway, and 2002 Chevrolet Cutaway. 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.

2

This step determines if DTC P0216 is a hard failure or an intermittent.

4

This step checks for an open or a short in the injection timing coil circuit 1.

5

This step checks for an open or short in the injection timing coil circuit 2.

6

The important thing in this step is that the PCM is sending a varying voltage. The voltage may vary between 1-12 volts and will usually vary between 5-6 volts when the engine is idling. This indicates that the PCM is okay and that there is a condition with the injection timing stepper motor. If there is a steady voltage present on any circuit, this indicates a condition with the PCM or a circuit that is shorted to voltage.