Radio Audio Inoperative at Rear Seat Audio (RSA) Control

Radio Audio Inoperative at Rear Seat Audio (RSA) Control

Diagnostic Instructions

* Perform the Diagnostic System Check - Vehicle (Diagnostic System Check - Vehicle) prior to using this diagnostic procedure.
* Review Strategy Based Diagnosis (Strategy Based Diagnosis) for an overview of the diagnostic approach.
* Diagnostic Procedure Instructions (Diagnostic Procedure Instructions)provide an overview of each diagnostic category.

Reference Information
Schematic Reference

Radio/Navigation System Schematics (Radio/Navigation System Schematics)
Connector End View Reference

Component Connector End Views (Component Connector End Views)
Electrical Information Reference

* Circuit Testing (Circuit Testing)
* Connector Repairs (Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (Wiring Repairs)

Scan Tool Reference

Control Module References (Control Module References)for scan tool information

Circuit/System Testing

1. Center the balance and fade adjustment on the radio.

• If adjustment of the fade and balance eliminates the concern, review the operation of the radio with the customer.

2. Disconnect the X2 connector of the rear HVAC control module. Connect a DMM between the suspect speaker output circuits (input to the RSA) from the radio. Turn ON the radio and verify there is AC voltage present.

• If AC voltage is not present, go to Speaker Malfunction (Speaker Malfunction).

3. Test or repair open, short to ground or short to voltage on the RSA ground circuit and battery positive voltage circuit.

• If all circuits test normal, replace the rear HVAC control module.