Toyota RAV4 (XA40) 2013-2018 Service Manual: No signal from transmitter id
![Toyota RAV4. No signal from transmitter id](images/books/256/40/2.htm85.jpg)
Description
The tire pressure warning valve and transmitter constantly sends radio waves
to the tire pressure warning
ecu.
Under the following conditions, the tire pressure warning antenna and receiver
is unable to receive the
signals from the tire pressure warning valve and transmitter, and a dtc is
output.
- Areas, 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.
Dtcs c2121/21 to c2125/25 can only be deleted by the tester. Dtcs c2181/81 to
c2185/85 can be
deleted when the transmitter sends a forced transmission signal or the test mode
ends. Dtcs c2181/81
to c2185/85 are output only in the test mode.
![Toyota RAV4. No signal from transmitter id](images/books/256/40/2.htm100.jpg)
Hint:
When no signals are received for 60 minutes or more, a dtc is output.
It is necessary to perform the procedure to identify the tire pressure warning
valve and transmitter that is
malfunctioning because it cannot be identified by the output dtc.
Wiring diagram
![Toyota RAV4. Wiring diagram](images/books/256/40/2.htm101.jpg)
Inspection procedure
Notice:
It is necessary to register an id code after replacing the tire pressure
warning valve and
transmitter and/or the tire pressure warning ecu (see page tw-9).
- Identify transmitter (corresponding to dtc)
- Set the pressure of each tire to the specified value.
Standard pressure:
220 kpa (2.2 Kgf/cm2, 32 psi)
- Connect the intelligent tester (with can vim) to the
dlc3.
- Turn the ignition switch on.
- Select tirepress by following the prompts displayed
on the intelligent tester.
![Toyota RAV4. Identify transmitter (corresponding to dtc)](images/books/256/40/2.htm102.jpg)
![Toyota RAV4. Identify transmitter (corresponding to dtc)](images/books/256/40/2.htm103.jpg)
- Rapidly release the tire pressure from any tire by 40 kpa
(0.4 Kgf/cm2, 5.8 Psi) for 30 seconds or more.
Hint:
- Identify the malfunctioning tire pressure warning valve
and transmitter by rapidly releasing the tire pressures
from each tire.
- Record which tirepress data (id1 to id5)
corresponds to each tire.
- Check the data list.
Result
![](images/books/256/40/2.htm104.jpg)
Notice:
- It may take up to 1 minute to display the updated
tire pressure data.
- When the tirepress data (ids 1 to 5) changes,
reset the tire pressure of the tires to the specified
value, rotate the tires 90 to 270° and recheck.
- When the transmitter is normal, record the tire
location and the transmitter id.
- When the tirepress data (ids 1 to 5) changes, repeat
the same procedure on the rest of the tires (one by one)
to identify which tire pressure warning valve and
transmitter the dtc corresponds to.
- Set the pressure of each tire to the specified value.
Standard pressure:
220 kpa (2.2 Kgf/cm2, 32 psi)
- Check all transmitters of the tires.
Result
![](images/books/256/40/2.htm93.gif)
- Check tire pressure warning valve and transmitter
- Select regit id code by following the prompts
displayed on the intelligent tester.
![Toyota RAV4. Check tire pressure warning valve and transmitter](images/books/256/40/2.htm106.jpg)
![Toyota RAV4. Check tire pressure warning valve and transmitter](images/books/256/40/2.htm107.jpg)
- Remove the tire pressure warning valve and transmitter
and check its id number (see page tw-61).
- Check whether the recorded transmitter id and the
actual transmitter id match.
Result ![](images/books/256/40/2.htm108.jpg)
![](images/books/256/40/2.htm98.gif)
Perform registration (transmitter id)
- Check wire harness (ecu - receiver)
![Toyota RAV4. Check wire harness (ecu - receiver)](images/books/256/40/2.htm109.jpg)
- Disconnect the e56 ecu connector.
- Disconnect the l20 receiver connector.
- Measure the resistance of the wire harness side
connectors.
Standard resistance
![](images/books/256/40/2.htm3.gif)
- Read value of intelligent tester (tire pressure)
- Check the data list tire pressure valve.
![Toyota RAV4. Read value of intelligent tester (tire pressure)](images/books/256/40/2.htm30.jpg)
Ok:
all tire pressure readings are equal to the actual
tire pressure.
Notice:
It may take up to 1 minute to display the updated tire
pressure data.
![](images/books/256/40/2.htm6.gif)
- Check id code (tire pressure warning valve and transmitter)
- Select regit id code by following the prompts
displayed on the intelligent tester.
![Toyota RAV4. Check id code (tire pressure warning valve and transmitter)](images/books/256/40/2.htm31.jpg)
![Toyota RAV4. Check id code (tire pressure warning valve and transmitter)](images/books/256/40/2.htm32.jpg)
- Remove the tire pressure monitor valve and transmitter
check its id number (see page tw-61).
- Check whether the recorded transmitter id and the
actual transmitter id match.
Result ![](images/books/256/40/2.htm34.jpg)
![](images/books/256/40/2.htm11.gif)
Perform registration (transmitter id)
Description
The tire pressure warning valve and transmitter that is installed in the
tires and wheels measures the air
pressure of the tires. The measured values are transmitted to the tire pr ...
Description
Hint:
It is necessary to perform the procedure to identify the tire pressure
monitor valve that is malfunctioning
because it cannot be identified by the output dtc.
Inspecti ...
Other materials:
For vehicles equipped with vehicle stability (vsc) system
Notices when using drum tester
Before beginning testing, disable the vsc. To
disable the vsc, turn the ignition switch off
and connect sst to terminals 12 (ts) and 4
(cg) of the dlc3.
Sst 09843-18040
Notice:
Confirm that the vsc warning light blinks.
Vsc system will be r ...
Tire inflation pressure
Make sure to maintain the
proper tire inflation pressure.
Tire inflation pressure
should be checked at least
once per month. However,
Toyota recommends that
tire inflation pressure be
checked once every two
weeks.
Checking the specified
tire inflation pressure
The recommended cold tire
inflation pr ...
Fog light assembly
Components
Removal
Hint:
Use the same procedures for the rh and lh sides.
The procedures listed below are for the lh side.
Disconnect cable from negative battery terminal
Caution:
Wait at least 90 seconds after disconnecting the
cable from the negative (-) battery terminal to
...