Installation Manual

reception from a Fob or TPM sensor (433.92MHZ or 315 MHZ depending Market). It communicates to a

Keyless Ignition Node (KIN) via a dedicated LIN bus. It also communicates to the rest of the vehicle via

the CAN bus. While the KIN performs the Immobilizer, back-up start mode to cover a dead battery, the

RFHM controls the KIN via the LIN bus and validates the key that the KIN reads. The module also has

several inputs and outputs to aid PEKG function. It reads the door handle inputs to initiate the PE

function. It also reads the KIN switch state (back-up for LIN failure). It reads the park state of the

transmission. It has several outputs. They include a HSD to control a redundant IgnRun state to the

BCM.

There are two models one with an internal antenna and one with an external output for an external

antenna. The module provides 5V to power the external antenna on the center conductor of the

external antennas coax cable.

4 Main Characteristics

Supply Voltage Range

6-16, LF drive only works down to 9V per

specification

Min

= 6V; US

Max

= 16V

U Typ = 13.5V

Temperature range

-40 to 85 °C

TMax = 85 °C; Tamb = 23 °C