Test Description
WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. 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 procedure.
- 3
This step verifies the integrity of the IC circuit and the PCM output. - 4
This step tests for a short to ground on the IC circuit.