Radio, Stereo and Compact Disc System Diagnosis
DTC B1001
CIRCUIT DESCRIPTION
This DTC is generated by the module when an error occurs between the VIN as received over the Low Speed GMLAN circuit and the VIN as stored in the module memory. The only circuit required is the Low Speed GMLAN circuit.
DTC DESCRIPTOR
This diagnostic procedure supports the following DTC:
DTC B1001 Option Configuration Error
This Vehicle has DTCs which include DTC symptoms. For more information on DTC symptoms refer to DTC Symptom Description in Vehicle DTC Information DTC Symptom Description
CONDITIONS FOR RUNNING THE DTC
The DTC is run when the module changes from OFF to ON. This may be in response to the radio switch or the ignition ON signal.
CONDITIONS FOR SETTING THE DTC
This DTC is generated by the module when an error occurs between the VIN as received over the Low Speed GMLAN circuit and the VIN as stored in the module memory. This happens when the radio changes from OFF to ON.
ACTION TAKEN WHEN THE DTC SETS
The module does not function. The radio may also displays as many characters of the word CALIBRATE as will fit in the radio display.
CONDITIONS FOR CLEARING THE DTC
Re-calibration with the correct calibrations for the vehicle and cycling the module to OFF then to ON will clear the DTC if there is no damage to the module.
TEST
