Navigation System - Voice Guidance Inoperative or Degraded Quality

Navigation System - Voice Guidance Inoperative or Degraded Quality

Diagnostic System Check - Vehicle

Perform the Diagnostic System Check - Vehicle before proceeding with these diagnostic procedures. Refer to Diagnostic System Check - Vehicle. Initial Inspection and Diagnostic Overview

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. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Diagnostic Aids. Component Tests and General Diagnostics

1. Audio prompt out circuits open or shorted-Test the audio prompt out circuits for an open, short to ground or short to voltage. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics
2. Defective radio-Replace the radio.Refer to Programming and Relearning Programming and Relearning
3. Defective amplifier-Replace the amplifier.Refer to Programming and Relearning Programming and Relearning