Component Description: BCM

The BCM is a multifunction module that monitors all sensor inputs and all CAN messages that relate to the TPMS. The BCM records and retains the unique sensor identifier of each TPMS sensor.

The BCM retains the previous sensor location information following a tire rotation. For the BCM to learn the new sensor location, the sensors must be trained (calibrated) to the BCM. Refer to: Tire Pressure Monitoring System (TPMS) Sensor Location Calibration  Additionally, the sensors must be trained when a new BCM is installed.

When installing a new BCM, there are several procedures that must be carried out in order for the module to function correctly. These procedures include, but are not limited to; PMI, anti-theft parameter reset, programming keyless entry remote and setting customer preferences. Refer to: Tire Pressure Monitoring System (TPMS) - Vehicles With: Keyless Entry With Remote Start - System Operation and Component Description 

All 4 TPMS sensors must be trained when a new BCM is installed.  TPMS pressure data is cleared from the BCM when the module is flashed or reconfigured. When the data is cleared, the tire pressure DID's reset to the factory default of 1033 kPa (149.96 psi) and the IPC displays dashes for the tire pressures. The sensors must be activated to transmit the latest tire pressure information.