Tire Monitoring System: Description and Operation

TIRE PRESSURE MONITORING (TPM)

DESCRIPTION
Some versions of this vehicle are equipped with a Tire Pressure Monitoring (TPM) system. It monitors air pressure in the four road tires (excludes spare). Pressure in the spare tire is not monitored.

There is a sensor (transmitter) in each of the vehicle's four road wheels. The system alerts the driver when tire pressure falls outside predetermined thresholds (pressure too low or too high). A message is then displayed on the Electronic Vehicle Information Center (EVIC) located in the overhead console.

For further information, refer to the Owners Manual or the appropriate diagnostic information.

OPERATION
The Tire Pressure Monitoring (TPM) system uses radio and sensor technology to monitor tire air pressure levels. Sensors, mounted to each road wheel as part of the valve stem, transmit tire pressure readings to a receiver located in the overhead console. These transmissions occur once every minute at speeds over 20 mph (32 km/h). The Tire Pressure Monitoring system remains active even if no tire pressure related message is displayed in the EVIC.

If any road tire pressure has exceeded the low or high pressure threshold (refer to chart), the TPM system will display a message in the EVIC and sound a chime. This message will be displayed for the rest of the ignition cycle, or until either the Low/High Tire pressure condition has been corrected. If the C/T, MENU, STEP or RESET button is pressed, the message is replaced by the new message requested; however, if the Low/High Tire condition has not been corrected, the Low/High Tire pressure message will again be displayed.

If a road tire is replaced by the spare, the TPM system will detect the swap and the message "SPARE TIRE IN USE? Y/N" (along with a chime) will be displayed.





TPM THRESHOLD PRESSURES