- Circuit Board Temperature Sensor Above Maximum Threshold
Circuit/System Description
The audio amplifier monitors the internal circuitry for excessive temperature. When the amplifier senses an internal circuitry temperature greater
than 95锟斤拷C (203锟斤拷F), the amplifier will set DTC B1024 11 and shut down until the internal circuitry cools below 90锟斤拷C (194锟斤拷F).
Conditions for Running the DTC
* Radio ON.
* Battery voltage must be between 9-16 volts.
Conditions for Setting the DTC
The audio amplifier detects an over-heat condition greater than 95锟斤拷C (203锟斤拷F) of the internal amplifier circuitry.
Action Taken When the DTC Sets
The audio amplifier will shut down and all speakers will be inoperative.
Conditions for Clearing the DTC
* The condition responsible for setting the DTC no longer exists.
* A history DTC will clear once 100 consecutive malfunction-free ignition cycles have occurred.
Diagnostic Aids
Extended use or extremely high volume especially in warm weather conditions may cause this DTC to set. Under these conditions it may be normal
for this DTC to set to prevent permanent damage to the audio amplifier circuitry.
Reference Information
Schematic Reference
Radio/Navigation System Schematics (See: Accessories and Optional Equipment/Diagrams/Electrical Diagrams/Radio/Navigation System
Schematics)
Connector End View Reference
Component Connector End Views (See: Diagrams/Connector Views)
Description and Operation
Radio/Audio System Description and Operation (See: Accessories and Optional Equipment/Description and Operation/Radio/Audio System
Description and Operation)
Electrical Information Reference
* Circuit Testing (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Circuit
Testing/Circuit Testing)
* Connector Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic
Procedures/Connector Repairs/Connector Repairs)
* Testing for Intermittent Conditions and Poor Connections (See: Testing and Inspection/Component Tests and General Diagnostics/General
Electrical Diagnostic Procedures/Circuit Testing/Testing for Intermittent Conditions and Poor Connections)
* Wiring Repairs (See: Testing and Inspection/Component Tests and General Diagnostics/General Electrical Diagnostic Procedures/Wiring
Repairs/Wiring Repairs)
Scan Tool Reference
Control Module References (See: Testing and Inspection/Programming and Relearning) for scan tool information
Circuit/System Verification
Note: Allow the entertainment system to cool if the ambient temperature inside the vehicle is in excess before proceeding with this diagnostic
procedure.
1. Ignition ON, with a scan tool clear all DTCs.
2. Radio ON, operate the system within the Condition for Running the DTC.
锟斤拷 If the DTC resets, replace the audio amplifier.
Repair Instructions
Perform the Diagnostic Repair Verification (See: Verification Tests) after completing the diagnostic procedure.
