Test Description

WARNING: This page is about a different car, the 2002 Pontiac Grand Am, 2002 Oldsmobile Alero, 2002 Chevrolet Monte Carlo, and 2002 Chevrolet Impala. 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.

3

This step tests for excessive resistance in the ECT sensor circuit.

4

This step tests for excessive resistance in the IAT sensor circuit.

5

This step tests for a skewed sensor through the range of temperatures affecting this DTC.