Honda Accord 2008 Manual page 1399

07/11/02 09:29:29 61TA0000_180_0066
TPMS
System Description (cont'd)
System Structure
Once the vehicle speed exceeds 28 mph (45 km/h), the TPMS control unit monitors all four tires and the system
function. If it detects low pressure in a tire, it alerts the driver by turning on the low tire pressure indicator. If it detects
a problem in the system, it turns on the TPMS indicator.
Control unit
Mounted over the accelerator pedal module, the TPMS control unit receives wireless pressure sensor ID signals every
time the vehicle speeds exceeds 28 mph (45 km/h). It also receives wireless signals from the transmitters for tire
pressure and the sensor condition, and it continuously monitors and controls the system. The TPMS control unit
cannot directly determine the position (location) of a TPMS sensor(s) on the vehicle since it is a wireless system. The
TPMS control unit assumes a sensor is in the same location on the vehicle as it was when it was last memorized.
TPMS sensor locations will change during scheduled vehicle maintenance (tire rotetion).
NOTE: To determine the actual location of each TPMS wheel sensor on the vehicle, do the tire pressure sensor
location procedure (see page 18-61). Once the tire pressure sensor locations are identified, write the sensor ID on the
side wall of the tire with a tire crayon to eliminate confusion.
Indicators
Two indicators are in the gauge control module: The low tire pressure indicator comes on when any tire pressure is
low, and the TPMS indicator that comes on only if there's a problem with the system.
The low tire pressure indicator alerts the driver that a tire(s) pressure is low, but does not specify the tire(s) location.
＊０２
Tire Pressure Sensor
(sensor-transmitter
with acceleration sensor)
Tire Pressure Sensor
(sensor-transmitter
with acceleration sensor)
18-66
Tire Position No. 1
Wheel
(TPMS type)
Tire Position No. 2
Wheel
(TPMS type)
Vehicle
Gauge Control Module
Indicators (LED)
Control Unit
(with radio
frequency antenna)
Tire Position No. 4
Tire Pressure Sensor
(sensor-transmitter
with acceleration sensor)
Wheel
(TPMS type)
Tire Position No. 3
Tire Pressure Sensor
(sensor-transmitter
with acceleration sensor)
Wheel
(TPMS type)