Global Telematics Box Module (TBM2)
| Refer to COMPONENT INDEX . |
Inputs
- global positioning information
- emergency (SOS) button pressure status
- ORC module data
- ignition status from the BCM
- microphone data
- vehicle configuration
- Supplemental Restraint System (SRS) indicator status from the IPC
- Daytime mode from the BCM
- language from the IPC
- crash event data
Outputs
- phone communication to the eCall speaker
- global positioning information to the cell phone module
- vehicle data to the BCM
- eCall status to the BCM
- audio mute
- illumination of the SOS button Light Emitting Diode (LED)
- power and ground to the SOS button
| 1 - Mounting Bosses |
| 2 - TBM2 |
| 3 - Antenna Connectors |
| 4 - USB |
| 5 - 32-Pin Wiring Harness Connector |
The TBM2 is the solid state control module in the eCall system and is located on the right inner side of the steering column support on left hand drive vehicles, and on the left inner side of the steering column support on right hand drive vehicles.
The TBM2 is connected to the instrument panel wiring harness using one 32-pin wiring harness connector and four antenna connectors. The Universal Serial Bus (USB) is connected between the radio and TBM2 for connectivity to the TBM2 internal Wi-Fi antenna. Three of the antenna connectors make connections to the GPS/SDARS antenna for GPS data, the LTE1 antenna and LTE2 antenna for communication on the 4G cellular network, if available in the market. The fourth antenna connection is a pass-through for GPS data to the radio.
The TBM2 module is mounted to the instrument panel structural support using two bolts to secure the two rear mounting bosses. The other two mounting bosses are held in place by the TBM2 bracket using a slip-in pressure fit at the front of the bracket.
The TBM2 has an internal cell phone antenna which is used in the event of the vehicle's cell phone module not operating or not operating properly.
| 1 - TBM2 |
| 2 - Backup Battery |
| 3 - Cover |
The TBM2 incorporates a backup battery with a life expectancy of 5-7 years that will allow the eCall 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.