Test Description

WARNING: This page is about a different car, the 2002 Oldsmobile Intrigue and 2002 Oldsmobile Aurora. However, it is still accessible from the selected car via links, so may be relevant.

The numbers below refer to the step number in the diagnostic procedures.

2

If any component DTCs are set, diagnose those DTCs first. A fault in a component can cause the converter to appear degraded or may have caused the converter to fail.

3

Clear the DTCs in order to run the catalyst test up to 6 times this ignition cycle. The diagnostic test will abort if the A/C clutch cycles. Turn OFF the A/C. The engine must be warmed. The converter needs to be warmed by raising the engine speed above idle for the specified time prior to each attempted test. Determine if the DTC passed or failed this ignition cycle. If the DTC does not pass or fail, look for a possible cause.

4

This step checks the conditions that may cause the converter to appear degraded. Repair any conditions that are found before proceeding with this diagnosis.

7

If the converter must be replaced, verify that other conditions that can damage the converter are not present. Before replacing the converter, correct any possible causes of converter damage.