Tire Pressure Monitoring System (Tpms) Construction/Operation; Construction; Operation - Mazda RX-8 2009 Service Highlights

TIRE PRESSURE MONITORING SYSTEM (TPMS) CONSTRUCTION/OPERATION

Construction

! The TPMS consists of wheel units that detect air pressure, temperature and acceleration of each tire, and a
TPMS control module that receives data (RF signals) sent from the wheel units to monitor the air pressure of
each tire.

Operation

! The wheel unit installed to each wheel sends data on air pressure, temperature and acceleration of each tire by
means of RF signals. The keyless receiver receives these signals with a built-in antenna.
! With advanced keyless system: Signals received by the keyless receiver are transmitted to the instrument
cluster via the keyless CM.
! With keyless entry system: Signals received by the keyless receiver are transmitted to the instrument cluster.
! The instrument cluster monitors the air pressure of each tire based on the tire data sent from each wheel unit.
If the instrument cluster detects an excessive drop in air pressure or flat tire, the instrument cluster illuminates
the TPMS warning light.
02-12–4
WHEEL AND TIRES
RF SIGNAL
WITH KEYLESS WITH ADVANCED
ENTRY SYSTEM KEYLESS SYSTEM
TPMS WARNING
LIGHT
WHEEL UNIT
KEYLESS
RECEIVER
KEYLESS CM
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