Module, Global Telematics Box: Description
A telematics connectivity module, called the Global Telematics Box Module (TBM2), is located above the glovebox and below the Passenger AirBag (PAB), secured to the top of the glovebox surround.
Several consumer application features are included in the telematics connectivity system to enhance the customer experience through interaction with the vehicle and is dependent on the market for which the vehicle is manufactured. Several applications are available and communicate with the Global Services Delivery Platform (GSDP) in that market.
- Long Term Evolution 2 (LTE2) Antenna
- Global Telematics Box Module (TBM2)
- Radio
- Combination Antenna
The TBM2 (2) is the solid state connectivity control module for the audio system which enables network connectivity and is located above the glovebox and below the PAB, secured to the top of the glovebox surround.
The TBM2 (2) is connected to the instrument panel wiring harness using one 32-pin wiring harness connector (5) and up to four antenna connectors (3). The Universal Serial Bus cable (USB) (4) is connected between the radio and TBM2 for diagnostic communication between the two modules. The FAKRA antenna connectors make connections to the combination antenna for GPS data and LTE1 data, and the LTE2 antenna for communication on the 4G cellular network, if available in the market.
The TBM2 module is mounted to the glovebox surround using four bolts to secure the module mounting bosses (1).
The TBM2 has an internal cell phone antenna which is used in the event of the vehicle's cellphone module not operating or not operating properly.
The TBM2 (1) incorporates a backup battery (2) with a life expectancy of 5-7 years that will allow the LTE network system to continue to work in case of vehicle power interruption. The battery will allow call and data transfer for at least 15 minutes with callback capability for at least one hour after a vehicle emergency.
Combination Antenna
The combination antenna consists of a Satellite Digital Audio Radio Service (SDARS) element, Global Positioning System (GPS) element, AM/FM element and a Long Term Evolution 1 (LTE1) element. The TBM2 system uses the GPS and LTE1 elements of the combination antenna. The LTE1 element is for data upload and download.
The combination antenna allows the MNO to locate the vehicle using the GPS element in the event the occupant cannot respond with the vehicle location.
Long Term Evolution 2 (LTE2) Antenna
The vehicle is equipped with two cellular phone (LTE) antennas. The LTE2 antenna is used for sending and receiving cellular telephone signals and data. The signals and data are supplied to the radio and telematics modules.
The LTE2 antenna is mounted in the instrument panel, behind the Instrument Panel Cluster (IPC). The use of two LTE antennas is for the purpose of increasing data upload and download speeds.
The LTE2 antenna has an internal 10 kilohm resistor to set a Diagnostic Trouble Code (DTC) in the module to which it is connected if the antenna cable or LTE2 antenna is disconnected from that module.
Radio
When LTE network access is in operation, the radio audio will be muted and network audio will be heard through the audio speakers.