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
The following are conditions that must be present in order for the radio to enable the diagnostics.
| • | The radio is in ACCESSORY, RUN, or RAP power mode. |
| • | The system voltage is at least 9 volts and no more than 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
Amplifier mutes all speaker channels.
Conditions for Clearing the DTC
| • | The condition must be corrected. |
| • | A history DTC clears after 100 malfunction-free ignition cycles. |
| • | The amplifier receives the clear code command from the scan tool. |
Reference Information
Schematic Reference
Radio/Navigation System Schematics
Connector End View Reference
Entertainment/Communication Connector End Views
Electrical Information Reference
Circuit/System Verification
The amplifier should operate normally at a reasonably high volume for an extended period of time.
Circuit/System Testing
Extended use of extremely high volume, especially in warm weather conditions, may induce this DTC. Under these conditions it may be normal for this DTC to set to prevent permanent damage to the amplifier circuitry. If DTC persists without excessive volume, replace the amplifier.
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for Audio Amplifier replacement, setup, and programming
