RFA Module

The RFA module is responsible for obtaining the passive key data. It uses the PATS antennas and the TPM module to receive the passive key data. The RFA module receives direct input from the TPM module over a LIN -based circuit and monitors the PATS antennas. The RFA module communicates the passive key data with the BCM over the MS-CAN.

The passive keys are programmed to the RFA module. The RFA module contains a unique ID that is checked by the BCM.

If the RFA module is replaced, at least two keys must be programmed to it and a parameter reset procedure carried out.