Result:
B -- REPLACE TIRE PRESSURE WARNING ECU
A -- END
From 08/2009
TIRE PRESSURE MONITORING: TIRE PRESSURE WARNING SYSTEM: C2121/21-C2125/25,C2181/81-C2185/85: No Signal from
Transmitter ID1
C2185/85 - Transmitter ID5 not Received (Test Mode DTC)
DESCRIPTION
The tire pressure warning valve and transmitters that are installed in the tire and wheel assemblies measure the tire pressures. The measured values
are transmitted to the tire pressure warning antenna and receiver on the body as radio waves and then sent to the tire pressure warning ECU. The
ECU compares the measured air pressure values with the air pressure threshold. When the measured air pressure value is less than this threshold, the
warning light in the combination meter turns on.
The tire pressure warning valve and transmitters constantly send radio waves to the tire pressure warning antenna and receiver.
Under the conditions below, the tire pressure warning antenna and receiver may be unable to receive the signals from the tire pressure warning valve
and transmitters, causing a DTC to be stored.
* Facilities or devices that use similar radio frequencies are located in the vicinity of the vehicle.
* Devices using similar radio frequencies are used in the vehicle.
* The ID of the tire pressure warning valve and transmitter is mistyped during registration.
* A tire/wheel/transmitter from a different vehicle is installed.
HINT
When no transmitter ID is received from a tire pressure warning valve and transmitter for a total of 20 minutes while the vehicle
speed is more than 8 km/h (5 mph) or no transmitter ID is received from all the tire pressure warning valve and transmitters for a
total of 20 minutes, DTCs will be set.
DTCs from C2121/21 to C2125/25 can be cleared by using the tester or when the tire pressure warning valve and transmitter
sends a normal signal. DTCs from C2181/81 to C2185/85 can be cleared when the transmitter in the tire pressure warning valve
and transmitter sends a forced transmission signal or test mode ends. DTCs from C2181/81 to C2185/85 are output only in test
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