A Important Preliminary Checks

Before using the Symptom tables use the following procedure:
^ Perform Diagnostic System Check - Computers and Control Systems and verify all of the following items:
- Verify that Diagnostic Trouble Codes (DTCs) are not stored.
- Verify that the scan tool data is within normal operating range. Refer to Scan Tool Data List. Scan Tool Testing and Procedures
^ Verify the customer complaint.
^ Perform the Visual/Physical Check. Initial Inspection and Diagnostic Overview

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