DTC B1024 DTC set in Bose Amplifier
Diagnostic Instructions
| • | Perform the Diagnostic System Check - Vehicle prior to using this diagnostic procedure. |
| • | Review Strategy Based Diagnosis for an overview of the diagnostic approach. |
| • | Diagnostic Procedure Instructions provides an overview of each diagnostic category. |
DTC Descriptor
DTC B1024 11: Circuit Board Temperature Sensor Above Maximum ThresholdCircuit/System Description
The internal amplifier circuitry is monitored for temperature. If the amplifier senses an over-heat condition higher than 95°C (203°F) of the internal circuitry, the amplifier will shut down until the internal circuitry cools below 90°C (194°F).
Conditions for Running the DTC
| • | Radio ON. |
| • | Battery voltage must be between 9-16 volts. |
Conditions for Setting the DTC
Amplifier senses an over-heat condition higher than 95°C (203°F) of the internal 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
Connector End View Reference
Entertainment/Communication Connector End Views
Description and Operation
Radio/Audio System Description and Operation
Electrical Information Reference
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.
- Ignition ON, with a scan tool clear all DTCs.
- Radio ON, operate the system within the Condition for Running the DTC.
| ⇒ | If the DTC resets, replace the audio amplifier. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for audio amplifier replacement, setup, and programming
