Schematic Reference: Radio/Audio System Schematics

Connector End Views Reference: Entertainment Connector End Views

Always perform the Radio/Audio System Diagnostic System Check before proceeding with these diagnostic procedures. Refer to Diagnostic System Check - Vehicle in Vehicle DTC Information.

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 Wiring Systems.

With RPO U88

1. Low level audio circuit open--Test the appropriate low level audio circuit for an open. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
2. Defective speaker--Replace the appropriate speaker. Refer to Speaker Replacement Reference .

With RPO U2K

Audio output signal circuit from digital radio receiver open--Test left, right, and audio common signal circuits for opens. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.