Initial Inspection and Diagnostic Overview

Inspection and Verification
1 Verify the customer concern.
2 Visually inspect for obvious signs of mechanical or electrical damage.
3 If an obvious cause for an observed or reported concern is found, correct the cause (if possible) before proceeding to the next step
4 If the cause is not visually evident, verify the symptom and refer to the Symptom Chart.

Also check for Diagnostic Trouble Codes (DTCs) and refer to the DTC Index.