Tire Pressure Monitoring System (TPMS) - System Operation and Component Description
System Operation
System Diagram
Network Message Chart
RTM TPMS Network Input Messages
Broadcast Message | Originating Module | Message Purpose |
|---|---|---|
TPMS data | RTM | Communicates tire pressure information to the BCM |
TPMS Function
NOTE: When directed to train any TPMS sensors, use only the sensor training procedure outlined in this manual. Do not use the TPMS reset procedure outlined in the Owner's Literature as this procedure does not program new sensors to the module.
The TPMS uses 4 valve stem mounted sensors to monitor tire pressure. These sensors wirelessly transmit tire pressure data to the RTM. The RTM is a radio signal receiver which collects the tire pressure data and sends the information to the BCM along a LIN. All TPMS functions are controlled by the BCM. The BCM compares the tire pressure data sent by the RTM with a programmed tire pressure. This programmed pressure is specified on the VC label and cannot be changed. If the actual tire pressure is less than the programmed tire pressure, the BCM sends a low tire pressure message to the IPC along the MS-CAN. The IPC responds by illuminating the TPMS warning indicator and displaying a low tire pressure message in the message center. The TPMS sensors are trained (calibrated) to the BCM which records the unique identifier for each TPMS sensor and records the location
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