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Audio Too Loud at Low Settings



Audio Too Loud at Low Settings

Diagnostic Instructions

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



Circuit/System Description

The steering wheel control signal circuit applies a different voltage to the radio based on a resistance that is placed into the circuit when a steering wheel control switch is pressed. These different voltage levels signal the radio to do the appropriate function based on the steering wheel button pressed.


Reference Information
Schematic Reference

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

Component Connector End Views (Connector Views)
Electrical Information Reference

* Circuit Testing (Component Tests and General Diagnostics)
* Connector Repairs (Component Tests and General Diagnostics)
* Testing for Intermittent Conditions and Poor Connections (Component Tests and General Diagnostics)
* Wiring Repairs (Component Tests and General Diagnostics)



Circuit/System Testing

1. Turn ignition ON.
2. Turn the radio ON.
3. Test the steering wheel controls signal circuit for a short to voltage.



Repair Instructions

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure

* Radio Replacement (Radio Replacement)
* Steering Wheel Control Switch Assembly Replacement (Service and Repair)



Repair Verification

Perform the Diagnostic Repair Verification (Verification Tests) after completing the diagnostic procedure.