Navigation System - Voice Guidance Inoperative or Degraded Quality

NAVIGATION SYSTEM - VOICE GUIDANCE INOPERATIVE OR DEGRADED QUALITY

DIAGNOSTIC SYSTEM CHECK - VEHICLE
Always perform the Diagnostic System Check - Vehicle before proceeding with these diagnostic procedures. Refer to Diagnostic System Check - Vehicle. Testing and Inspection

VOICE GUIDANCE INOPERATIVE OR DEGRADED

IMPORTANT: The following information lists the most probable cause of the concern to the least probable cause. If the list leads to the replacement of a component, always inspect for a poor connection before proceeding with replacement.

1. Audio Prompt Out Circuits open or shorted-Test the Audio Prompt Out circuits for an open, short to ground or short to voltage.
2. Defective Radio-Replace the radio.
3. Defective Amplifier-Replace the amplifier.