Visual/Physical Inspection

Visual/Physical Inspection
- Inspect for aftermarket devices which could affect the operation of the vehicle.
- Inspect the easily accessible or visible system components for obvious damage or conditions which could cause the symptom.
- Check for the correct lubricant levels and the proper viscosities.
- Verify the exact operating conditions under which the concern exists. Note factors such as vehicle speed, road conditions, ambient temperature, and other specifics.
- Compare the driving characteristics or sounds, if applicable, to a known good vehicle and ensure you are not trying to correct a normal condition.

Intermittent
Test the vehicle under the same conditions that the customer reported in order to verify the system is operating properly.