Tire Pressure Monitoring System

Tire Pressure Monitor (TPM) system allows driver to display all 4 tire pressures on Driver Information Center (DIC) while vehicle is being driven. TPM system uses Remote Control Door Lock Receiver (RCDLR), Body Control Module (BCM), Powertrain Control Module (PCM), 4 radio frequency transmitting pressure sensors inside each wheel/tire assembly, and a class 2 serial data circuit to perform the system functions. When vehicle is stationary for more than 20 minutes, sensors go into power down mode. In this mode, sensors transmit tire pressure data once every 60 minutes, this minimizes sensor battery consumption. These batteries are not serviceable and require sensor replacement if low. As vehicle speed increases to 20 MPH, the sensor's internal roll switches turn the sensors on and they begin to transmit a unique identification code and a radio frequency signal. RCDLR receives and translates this data in to tire location and tire pressure.

If TPM system detects a tire pressure more than 42 psi (289 kPa), HIGH TIRE PRESSURE warning message is displayed. If system senses a tire pressure 5-25 psi (34-172 kPa), LOW TIRE PRESSURE warning message is displayed. If system senses less than 5 psi (34 kPa), FLAT TIRE warning message is displayed. After this message 2 chimes will sound followed by MAX SPEED 55 MPH message. Next message to appear is REDUCED HANDLING.

TPM system can also compensate for high and low altitudes using PCM's barometric pressure sensor via a class 2 serial data circuit. RCDLR has ability to detect malfunctions within TPM system. Any malfunctions detected will cause DIC to display SERVICE TIRE MONITOR warning message. For more information on the RCDLR or Remote Function Actuation (RFA) system, go to REMOTE KEYLESS ENTRY SYSTEM - CORVETTE article.

To program TPM system, go to TIRE PRESSURE MONITOR SENSOR PROGRAMMING  under PROGRAMMING. For TPM system diagnosis and repair, go to TIRE PRESSURE MONITORING DIAGNOSTIC SYSTEM CHECK under SELF-DIAGNOSTIC SYSTEM in BODY CONTROL MODULES - CORVETTE article.