Test Description

WARNING: This page is about a different car, the 2003 GMC Envoy XL and 2003 Chevrolet TrailBlazer. However, it is still accessible from the selected car via links, so may be relevant.

The number below refers to the step number in the diagnostic procedure.

5

This step will determine if the Manifold Absolute Pressure (MAP) sensor voltage is within the proper range at idle.

6

This step will determine if the MAP sensor responds properly to the change in manifold pressure.

7

A throttle blade that sticks or binds may set this code. Opening the throttle through the entire range will indicate problems such as these.

9

When the PCM detects a condition within the ETC system other DTCs ay set due to the many redundant tests run continuously on this system. Locating and repairing 1 individual condition may correct more than 1 DTC. Keep this in mind when reviewing captured DTC info.