Test Description
WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2003 GMC Sonoma, 2003 GMC Safari, 2003 GMC Jimmy, 2003 Chevrolet S10 Pickup, and 2003 Chevrolet Blazer. However, it is still accessible from the selected car via links, so may be relevant.
The number below refers to step number in diagnostic procedure.
- 5 - This test will determine the ability of the PCM and IAC valve control circuits to control the IAC valve.
- 7 - This test will determine the ability of the PCM to provide the IAC control valve circuits with a ground. On a normally operating system, the test light should not flash while the IAC Counts are incrementing.