Test Description

WARNING: This page does not describe the selected car, but rather 7 other vehicles, including the 2002 Pontiac Grand Prix, 2002 Pontiac Bonneville, 2002 Chevrolet Monte Carlo, 2002 Chevrolet Impala, and 2002 Buick Regal. 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 determines if the MAP sensor pressure is within the proper range at idle.

5

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

6

This step determines if the TP sensor is operating properly.

7

This step determines if any mechanical faults have caused this DTC to set.