DTC B19FB-12: GSM (Group System for Mobile) Antenna #2- Circuit short to battery: Action

Check that the data network provider is displayed on the screen, if the data network provider is displayed, go to step 10. If there is no display go to step 2
Using the Jaguar Land Rover approved diagnostic equipment, perform routine - On Demand Self Test (0x0202) and read the Diagnostic Trouble Code(s). If the DTC is set go to step 3, if the DTC is no longer set go to step 10
Refer to the electrical circuit diagrams and disconnect the group system for mobile #2 antenna cable from the group system for mobile #2 antenna
Measure the voltage between pin 1 of the group system for mobile #2 antenna cable and a local ground connection on the vehicle
If the voltage is greater than 9 volts, go to step 6, if not go to step 8
Refer to the electrical circuit diagrams and disconnect the group system for mobile #2 antenna cable form the front infotainment control module and repeat the measurement from step 4
If the voltage is greater than 9 volts, rectify the short circuit as necessary, replace the cable and go to step 2, if not go to step 9
Reconnect the group system for mobile #2 antenna cable back to the group system for mobile #2 antenna and the front infotainment control module. Perform routine - On Demand Self Test (0x0202). If the fault persists, install a new group system for mobile #2 antenna
Check the front infotainment control module software release notes to see if a repair is available and update the front infotainment control module and repeat step 2. If no software update is available go to step 10
Check for other Diagnostic Trouble Code(s) relating to the customer concern and follow the DTC index