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.