Initial Inspection and Diagnostic Overview

1. Verify the customer concern by operating the audio system with the engine running (vehicle in and out of motion).
2. Visually inspect for the following obvious signs of mechanical and electrical damage.

VISUAL INSPECTION CHART

Mechanical
^ Audio unit physically damaged, misaligned, any control(s) inoperative
^ Antenna or cable physically damaged, misaligned connection(s)
^ Radio speakers or mountings physically damaged, misaligned
^ Radio ignition interference capacitor or radio receiver grounding strap misaligned (also check for cleanliness and metal-to-metal contact)

Electrical
^ Open Central Junction Box (CJB) fuse(s):
- Fuse 3 (15 A)
- Fuse 22 (15 A)
- Fuse 27 (5 A)
^ Open connector(s)
^ Corroded connector(s)
^ Ignition switch
^ Open or shorted circuit(s)

3. If the fault is not visually evident, proceed to Speaker Walk-Around Test and ACM Self-Diagnostic Mode (P100i only). P100i Self-Diagnostic Mode