If a 4G converter installed in a vehicle stops regularly phoning home this may be caused by a loss of signal from the converter.
V3 units must have firmware EGPS-X.8.122 or later, otherwise the GPS will not recognize it has a 4G Converter connected to it. You can verify firmware versions for your TCUs in the Ground Traffic Control GPS Units Report. If the V3 has firmware prior to that version, replace the V3 with a unit that has the correct firmware on it.
Checking the 4G Converter
- Locate the V3 and 4G converter units in the vehicle.
- Turn the vehicle engine on.
- Confirm that all connections between the V3 and the 4G converter are secure. The antennas should be connected and located at least 8 inches apart from each other.
- Confirm that no metal objects are obstructing the devices.
- If no lights on the 4G converter are illuminated, and the Cellular light on the V3 is not on, proceed with the following reset procedure.
Multitech converter used as sample. For visual references of other converter models please see the Thales and Sierra Wireless installation guides.
Resetting the 4G Converter
- Remove the 4-pin connector from the V3 unit.
- Remove the 6-pin connector from the 4G converter to the V3 unit.
- Eject the SIM card on the side of the 4G converter, then press it again to re-seat it.
- Plug the 6-pin connector back into the V3 unit.
- Plug the 4-pin connector back into the V3 unit.
- After a minute, the 4G converter should power on and attempt to obtain a signal.
On the V3 unit: The Cellular light should flash red for several moments, then go solid.
On the 4G converter: The Power, CD, and LF lights should turn solid green. The Prog Signal lights should indicate the strength of the signal. - Check Ground Traffic Control to confirm that the converter is phoning home.