Module, Fleet Telematics (FTM): Description
The Fleet Telematics System is used to relay vehicle data to a Fleet Management System. The Fleet Telematics Module (FTM) (3) is equipped with a Global Positioning System (GPS) antenna (2) for location data and a Long Term Evolution (LTE) antenna (1) for network data transmission. The FTM is located behind the center cupholder, secured to a bracket that is attached to the instrument panel carrier. The GPS antenna is located below the center stack bezel, near the defroster grille. The LTE2 antenna is located to the right of the Instrument Panel Cluster (IPC).
The FTM captures and sends data every 30 seconds while also performing vehicle diagnostics. Based upon the appropriate Controller Area Network (CAN) configuration message, the FTM sends a diagnostic request to one Electronic Control Unit (ECU) at a time (three seconds per ECU). A warning will be sent to the Fleet Management System if a critical Diagnostic Trouble Code (DTC) is present.
There are two types of warning triggers in the Fleet Telematics System, automatic and configured. Automatic warning triggers are for critical DTCs such as low engine oil pressure, low brake fluid, and impact events. Configured warning triggers provide the Fleet Management System the ability to set a threshold when a warning trigger will happen for harsh acceleration, harsh braking, vehicle speed, and reverse gear situations.