Speakers Inoperative - One or More

Speakers Inoperative - One or More

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

One Speaker Inoperative

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 open-Test the appropriate speaker output circuits for an open. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics
2. No audio output from the radio-Test for any AC voltage between the appropriate speaker output circuits at the speaker harness connector, disconnected with the radio volume adjusted to an audible level. If AC voltage is present, replace the speaker. Refer to Speaker Replacement Reference. If no AC voltage is present, replace the radio. Refer to Radio Replacement. Speaker Replacement Reference

With RPO U87

1. Speaker output circuit from amplifier open or shorted-Test the appropriate speaker output circuits for an open or short. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics
2. No low level audio output from the radio-Test for any AC voltage between the appropriate low level output circuits at the amplifier harness connector, disconnected with the radio volume adjusted to an audible level. If no AC voltage is present, replace the radio. Refer to Radio Replacement.
3. No audio output from the amplifier-Test for any AC voltage between the appropriate speaker output circuits at the speaker harness connector, disconnected with the radio volume adjusted to an audible level. If AC voltage is present, replace the speaker. Refer to Speaker Replacement Reference. If no AC voltage is present, replace the amplifier. Refer to Amplifier Replacement. Speaker Replacement Reference