Controller Area Network
The Tire Pressure Monitoring System Control Module (TPMSCM) sends and receives a number of digital messages via the High Speed (HS) Controller Area Network (CAN) powertrain systems bus. The received messages are used for the operation of the TPMS. The transmitted messages comprise of TPMS status and requests to the Instrument Cluster (IC) to illuminate warnings indicators and/or display messages in the message center.
The TPMSCM transmits the messages shown in the following table:
| MESSAGE | RECEIVED BY |
|---|---|
| TPMS diagnostic response | A Jaguar Land Rover approved diagnostic system |
| TPMS amber warning indicator request at 25% (or 20% depending on market) tire deflation | Instrument Cluster (IC) |
| TPMS message display request | IC |
| Current tire pressures | IC |
| Recommended tire pressure data | IC |