Speakers Inoperative - One or More

Speakers Inoperative - One or More

Diagnostic System Check - Radio, Stereo and Compact Disc System

Always perform the Vehicle Diagnostic System Check before proceeding with these diagnostic procedures. Refer to Diagnostic System Check - Vehicle. 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

With RPO UW4 and UZ6
* Speaker output open - Test the appropriate speaker output circuits for an open. Refer to Circuit Testing and Wiring Repairs in Diagnostics Aids. Component Tests and General Diagnostics
* No audio output from the radio - Disconnect speaker harness connector from speaker. Turn On the radio and adjust volume approximately 50 percent. Measure the AC voltage across the speaker harness connector terminals. Replace the speaker if AC voltage is present. Refer to Radio Front Side Door Lower Speaker Replacement, Front Upper Speaker Replacement, or Radio Rear Speaker Replacement.
* If no A/C voltage is present, replace the radio. Refer to Radio Replacement.
* Perform the VIN Relearn procedure with a scan tool. On the scan tool, go to Module Replacement/Setup in Vehicle Control Systems and select Radio.

With RPO UK6 (Rear Speakers Only)
* Speaker output open - Test the appropriate speaker output circuits between the radio and rear seat audio (RSA) module for an open. Test the appropriate speaker output circuits between the RSA module and rear speaker for an open. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics
* No audio output from the RSA module - Disconnect the speaker harness connector from one rear speaker. Turn ON the radio and adjust volume approximately 50 percent. Turn OFF the RSA power switch. Measure the AC voltage across both terminals of the speaker harness connector. Replace the speaker if AC voltage is present. Refer to Radio Rear Speaker Replacement.
* No AC voltage is present - Disconnect the RSA module connector. Bypass the RSA module by connecting two fused jumper wires between the appropriate speaker output circuits from the radio and RSA module. Turn ON the radio. Replace the RSA module if sound is heard from the rear speaker. Refer to Rear Seat Audio Control Replacement. Replace the radio if no sound is heard from the rear speaker. Refer to Radio Replacement.
* After replacing the radio, perform the VIN relearn procedure with a scan tool. On the scan tool, go to Module Replacement/Setup in Vehicle Control Systems and select Radio.

Speakers - One Channel 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

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

With RPO U2K
* Audio signal circuit open - Test the appropriate audio signal circuit between the radio and digital radio receiver (DRR) for an open, short to ground, or short to battery. Refer to Circuit Testing and Wiring Repairs in Diagnostic Aids. Component Tests and General Diagnostics
* No audio output from the DRR - Measure the voltage from the DRR audio signal circuit with the radio ON. Replace the DRR if no voltage is measured. Refer to Digital Radio Receiver Replacement.
* No audio input to the radio - Measure the voltage from the radio audio signal circuit with the radio ON. Replace the radio if voltage is measured and symptom is still present. Refer to Radio Replacement.
* After replacing the radio, perform the VIN Relearn procedure. On the scan tool, go to Module Replacement/Setup in Vehicle Control Systems and select Radio.