Schematic Reference: Radio/Audio System Schematics

Connector End View Reference: Entertainment Connector End Views

Always perform the Vehicle 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.

Without RPO UZ8

1. Speaker output circuit high resistance--Test the appropriate speaker output circuits for high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
2. Defective speaker--Replace the appropriate speaker. Refer to Speaker Replacement Reference .

With RPO UZ8 (Monsoon)

1. Speaker output circuit high resistance--Test the appropriate speaker output circuits for high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
2. 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.
3. Amp sense circuit shorted to ground--Test the amp sense circuit for a short to ground. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
4. Defective speaker--Replace the appropriate speaker. Refer to Speaker Replacement Reference .

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

With RPO U2K

1. Audio common circuit open or high resistance--Test the audio common circuit for an open or high resistance. Refer to Circuit Testing and Wiring Repairs in Wiring Systems.
2. Audio output from digital radio receiver--Replace the digital radio receiver. Refer to Control Module References in Computer/Integrating Systems.
3. Digital radio output from radio--Replace the radio. Refer to Control Module References in Computer/Integrating Systems.