Initial Inspection and Diagnostic Overview

1. Verify the customer concern by operating the electronic audio system with the engine running and the vehicle in and out of motion.
2. Visually inspect for obvious signs of mechanical and electrical damage; refer to the following chart:

VISUAL INSPECTION CHART

Mechanical
- Radio chassis physically damaged, misaligned, any controls inoperative
- Digital audio compact disc changer physically damaged, misaligned, any controls inoperative
- Antenna and two-piece antenna cable or electric antenna physically damaged or misaligned
- Radio speakers mounting/speaker cones physically damaged, misaligned
- Radio ignition interference capacitor, radio frequency interference suppression bond and radio receiver hood bonding strap misaligned, corroded and/or loose

Electrical
- Failed fuses
- Damaged connectors
- Damaged ignition switch
- Circuitry open/shorted/corroded
- Damaged radio chassis

3. If the fault is not visually evident, proceed to Speaker Walk-Around Test and T100i DM Self-Diagnostic Mode.