Initial Inspection and Diagnostic Overview

AUDIO UNIT AND AMP.
All voltage inspections are made with:
- Ignition switch ON or ACC
- Audio unit ON
- Audio unit and amps. connected (If audio unit or amp. is removed or inspection, supply a ground to the case using a jumper wire.)

ANTENNA
1. Using a jumper wire, clip an auxiliary ground between antenna and body.
- If reception improves, check antenna ground (at body surface).
- If reception does not improve, check main feeder cable for short circuit or open circuit.