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TPM Receiver

TPM Receiver is integrated with the TPM module installed under the passenger airbag. The operating battery of TPM module is supplied from the vehicle battery.

A HIGH-LINE TPMS Receiver performs the same functions as the LOW-LINE RX, but in addition is equipped to control three Low Frequency Initiator (LFI) devices, fitted to the vehicle near each of the three tire locations. When the ignition circuit is first energized, the TPMS Receiver unit activates each of the LFI devices one at a time. The coded electromagnetic field from the LFI device causes a nearby WE to temporarily suspend normal processing and broadcast an RF message. The message content is the same as those normally generated by the WE sensor, with the exception that the operating state information within the broadcast reflects that the WE has detected the coded electromagnetic field from a nearby LFI device.

Upon reception of the broadcast from the WE sensor, the TPMS receiver is able to associate the unique WE ID code with the wheel’s position on the vehicle, due to the known location of the LFI units. This “auto-location” process takes place each time the vehicle’s ignition circuit is energized and vhhicle speed is more than 25km/h after parked for 19min, so that changes in wheel position will be noted. The TPMS Warning Algorithm continues to evaluate the pressure and temperature of each tire, and is responsible for making the decision to alert the driver to a potentially dangerous tire inflation condition via a visible ‘TREAD’ indicator. It also indicate the appropriate tire position via a ‘FR’ (Front Right), ‘FL’ (Front Left), ‘RR’ (Rear Right), or ‘RL’ (Rear Left) indicator.

This DTC indicates that the Vehicle/receiver battery level is High.