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 ThresholdDTC B1024 53: Circuit Board Temperature Sensor Low
DTC B1024 54: Circuit Board Temperature Sensor High
Circuit/System Description
The internal module circuitry temperature is monitored. If the an over-heat condition which exceeds the maximum threshold of the internal circuitry or a malfunctioning temperature sensor is detected, the module will shut down until the internal circuitry cools.
Conditions for Running the DTC
| • | The radio is in the ON or ACCY position |
| • | The system voltage is at least 9 volts and no more than 16 volts. |
Conditions for Setting the DTC
The module detects an over-heat condition or a malfunctioning sensor.
Action Taken When the DTC Sets
Module functionality is suspended.
Conditions for Clearing the DTC
| • | A current DTC clears when the module temperature returns to an acceptable level. |
| • | A history DTC clears after 100 malfunction-free ignition cycles. |
Diagnostic Aids
Extended use of extremely high volume, especially in warm weather conditions, may cause this DTC to set in the audio amplifier. Under these conditions, it may be normal for this DTC to set to prevent permanent damage to the amplifier circuitry and no repair should be attempted.
Reference Information
Schematic Reference
Radio/Navigation System Schematics
Connector End View Reference
Description and Operation
Radio/Audio System Description and Operation
Electrical Information Reference
Circuit/System Verification
Verify that DTC B1024 is not set.
| ⇒ | If the DTC is set, replace the appropriate control module that set the DTC. |
Repair Instructions
Perform the Diagnostic Repair Verification after completing the diagnostic procedure.
Control Module References for audio amplifier or antenna module replacement, setup, and programming
