199001470 - E7060 TYRE PRESSURE MONITORING SYSTEM - DESCRIPTION

Description

The system referred to as the TPMS "Tyre Pressure Monitoring System" monitors tyre pressure and temperature moment by moment. It sends the required information via the CAN network. In particular, it activates on the instrument panel a low pressure signal for one or more tyres or a puncture signal for one tyre. It consists of a reception signal located inside the passenger compartment (in the boot on the right hand side) and four transmission sensors located inside the tyre on the rim that send signals to four reception aerials.The aerials acquire information on the status of the four tyres via radio signals. They then communicate with the tyre pressure control unit, which communicates with the Body Computer via the CAN.At key-on, the control unit conducts an initial check: when the vehicle moves, the sensors measure the pressure and then make a transmission to indicate the initial status. The receiver receives this transmission from all the sensors within 5 seconds so that it can check tyre function.Two intervention thresholds are identified that are stored inside the receiver. The first (defined as CHECK) indicates that one or more tyres are at a pressure slightly lower than optimum pressure and the user should therefore check and restore the correct value. The second threshold (defined as WARNING) is set to indicate a constant or sudden pressure loss due to a puncture in one or more tyres.For more details:    See descriptions 4450 HUBS AND WHEELS The control unit supply lines are protected by fuses in the boot compartment control unit and Body Computer.