Schematic Reference: Radio/Audio System Schematics

Connector End Views Reference: Entertainment Connector End Views

Always perform the Diagnostic System Check - Vehicle 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 U87

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.