A Important Preliminary Checks

Before using the Symptom tables, use the following:
^ Perform Diagnostic System Check - Computers and Controls Systems and verify all of the following items:
- Clear the DTCs.
- Ensure that the scan tool data is within normal operating range. Refer to Scan Tool Data List. Scan Tool Data, Normal Values and Definitions
^ Verify the customer's complaint.
^ Perform the Visual and Physical Check. Initial Inspection and Diagnostic Overview

Locate the correct symptom in the list at the end. Follow the procedures in the appropriate diagnostic table. If the condition can not be duplicated, or is determined to be intermittent, refer to Intermittent Conditions. Intermittent Conditions