B2484
DTC B2483 or B2484
Circuit Description
The navigation antenna is connected to the vehicle communication interface module (VCIM) with a RG-174 coax cable. The VCIM polls the data from the navigation antenna once every second.
DTC Descriptors
This diagnostic procedure supports the following DTCs:
* DTC B2483 GPS Sensor Circuit Low
* DTC B2484 GPS Sensor Circuit Open
Conditions for Running the DTC
* The ignition must be in the RUN or ACC position.
* The system voltage is at least 9.5 volts and no more than 15.5 volts.
* All the above conditions are present for greater than 1 second.
Conditions for Setting the DTC
* The VCIM does not detect a navigation signal.
* All the above conditions are present for greater than 1 second.
Action Taken When the DTC Sets
* The OnStar(R) status LED turns red.
* The OnStar(R) Call Center cannot locate the vehicle.
Conditions for Clearing the DTC
* The VCIM detects the presence of a navigation antenna.
* A history DTC clears after 50 malfunction-free ignition cycles.
* The VCIM receives the clear DTC command from the scan tool.
Test
