Operation CHARM: Car repair manuals for everyone.

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.

Visual Inspection Chart:




2. Visually inspect for obvious signs of mechanical and electrical damage.
3. If the fault is not visually evident, proceed to speaker walk-around test and audio control module audio unit Self-Diagnostic Mode.