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
^ Audio unit physically damaged, misaligned or any controls inoperative
^ Antenna or antenna cable physically damaged or misaligned
^ Radio speakers mounting, speaker cones physically damaged or misaligned
^ Radio Ignition interference capacitor, radio frequency interference suppression bond or radio receiver hood bonding strap misaligned, corroded or loose

Electrical
^ Blown Central Junction Box (CJB) Fuse 1 (7.5 A), Fuse 20 (7.5 A), Fuse 28 (7.5 A), and Fuse 29 (25 A)
^ Damaged connectors
^ Damaged ignition switch
^ Damaged circuitry
^ Damaged audio unit

3. If the fault is not visually evident, proceed to Speaker Walk-Around Test, DM100i Self-Diagnostic Mode, Speaker Walk-Around Test and T100i DM Self-Diagnostic Mode
or T100iDM Self-Diagnostic Mode. Speaker Walk-Around Test and T100i DM Self-Diagnostic Mode