Symptom Diagnosis: Notes

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

NOTE: Perform PRELIMINARY INSPECTION prior to diagnosing by symptom.

NOTE: The following steps must be completed before using the symptom tests.

Perform the DIAGNOSTIC SYSTEM CHECK under SELF-DIAGNOSTIC SYSTEM, before using the SYMPTOM TESTS in order to verify that all of the following are true:

There are no DTC's set.
The control module can communicate via the serial data link.

Review the system operation in order to familiarize yourself with the system functions. See DESCRIPTION & OPERATION .