9
5
Selecting ALARM it’s possible to enable or
disable SOUND and VIBRATION
6
Selecting RELEASE the tool will show software
infos:
FW VERSION
DB VERSION
SERIAL: XXXXXX
9. What is a TPMS system?
The TPMS or Tire Pressure Monitoring System continually monitors tire pressures
and temperatures and sends the information to the body computer to have it displayed
on the instrument panel. The system is made up of an ECU placed inside the cab that
receives radio frequency pressure and temperature signals from four sensors installed
inside the tires.
When the vehicle is running, the sensors transmit their signals every 20-30 seconds
approximately. In the event of a significant pressure variation, transmission interval is
shortened to 8-10 seconds.
When the vehicle is at standstill, transmission interval may vary between 10 and 40
minutes, depending on the type of sensor installed.
10. TPMS
indicator
lights
Outlined below are the most significant TPMS indicator lights.
Depending on the type of vehicle, this light may
indicate one of the following conditions:
•
Turns on to indicate that the pressure of
one or more tires is above or below the
specified rated pressure.
•
Turns on to indicate a TPMS malfunction
(for instance, when one of the sensors is
malfunctioning).
•
Light operation may vary to differentiate
indications when tire pressure has
crossed the warning or alert thresholds.