Speakers Inoperative - All

Speakers Inoperative - All

Schematic Reference: Radio/Navigation System Schematics

Connector End Views Reference: Entertainment/Communication Connector End Views

Diagnostic System Check - Vehicle

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

All Speakers Inoperative

Important: The following information lists the most probable cause of the concern to the least probable cause followed by the appropriate test for that condition. If the list leads to the replacement of a component, always inspect for a poor connection before proceeding with the replacement. Refer to Testing for Intermittent Conditions and Poor Connections and Connector Repairs in Diagnostic Aids . Component Tests and General Diagnostics

All Radios
1. Battery positive voltage circuit to the amplifier open-Test the battery positive voltage circuit to the amplifier for an open. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics
2. Ground circuit to the amplifier open-Test the ground circuit to the amplifier for an open. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics
3. Amp mute signal shorted to ground-Test the amp mute signal for a short to ground. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics
4. Programming and RelearningProgramming and Relearning

Important: The following procedure assumes all speakers are operative for all modes of operation except digital radio.

With RPO U2K
1. Audio signal circuit shorted-Test the audio signal circuits for a short. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics
2. No audio output from the digital radio receiver-Replace the digital radio receiver.Programming and RelearningProgramming and Relearning
3. No digital radio audio output from the radio-Replace the radio. Programming and RelearningProgramming and Relearning.