Impreza WRX STI F4-2.5L DOHC Turbo (2007)
Tire Monitoring System: Description and Operation
Receiver
RECEIVER
The receiver has a built-in antenna.
The receiver collects tire pressure data from the transmitters, and turns on the indicator to warn the driver when it concludes that the tire pressure has
dropped below a certain value.
The receiver is provided with a system fault diagnosis function.
RECEIVER FUNCTIONS
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Receiving function: Receives data from the transmitters and decides whether the data is valid or not.
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Pressure judgment function: The indicator turns ON to warn the driver if the tire pressure drops below the preset value (180 kPa, 1.835 kgf/sq.cm,
26.11 psi). At the same time, a diagnostic trouble code is stored in the memory inside the receiver to identify which tire has low pressure. (low
pressure detection turns ON at 180 kPa (1.835 kgf/sq.cm, 26.11 psi), turns OFF at 200 kPa (2.039 kgf/sq.cm, 29.01 psi))
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Diagnosis function: The indicator flashes and a diagnostic trouble code is stored in the memory inside the receiver if a system abnormality such as
data reception failure, bad received data, or bad transmitter condition is detected.
