Reduced Volume - One or More Speakers

Reduced Volume - One or More Speakers

Diagnostic System Check - Vehicle

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

Speaker(s) - Reduced Volume

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

Without RPO U87

1. Speaker output circuit high resistance-Test the appropriate speaker output circuits for high resistance. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics
2. Defective speaker-Replace the appropriate speaker. Refer to Speaker Replacement Reference. Speaker Replacement Reference

With RPO U87

1. Speaker output circuit high resistance-Test the appropriate speaker output circuits for high resistance. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics
2. Low level audio circuit open-Test the appropriate low level audio circuit for an open. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics
3. Defective speaker-Replace the appropriate speaker. Refer to Speaker Replacement Reference. Speaker Replacement Reference