Low Frequency Initiator

The LFI is located at each vehicle wheel house(F/L, F/R, R/R). An LFI unit is mounted in each wheel well of a vehicle to enable the Receiver unit to determine the vehicle position of each WE for which it has a stored ID code. Using a LIN communition line to each LFI, the Receiver can activate an LFI to send out an LF message and trigger the WE sensor near its location to respond with an RF transmission. By activating the LFI units one at a time, the Receiver can automatically locate the vehicle position of each WE. For fault detection, the LFI will report back its "operating properly" status to the Receiver via the LIN communition line.

This DTC indicates that a LIN failure is detected when the LFI does not respond to communication check request when triggered for the 3 time. LIN failure leads to a localization failure. Therefore, this failure is verified only when localization failed. In the event of ECU over or under voltage the LFI is not powered thus DTC is not stored.