Toyota RAV4 (XA40) 2013-2018 Service Manual: 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 pressure warning 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 values are less than this threshold, the warning light in the combination meter turns on.
The tire pressure warning ecu stores a dtc when the tire pressure monitor valve stops transmitting signals. At this time, forcibly transmit the signals by releasing the tire pressure rapidly. The stored dtc is cleared when the signal transmission is resumed.
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.
Wiring diagram
Inspection procedure
Notice:
It is necessary to register an id code after replacing the tire pressure warning antenna and receiver and/or the tire pressure warning ecu (see page tw-9).
- Perform forced transmission of transmitter id of all wheels
- 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.
- Rapidly release the pressure from each wheel by approximately 40 kpa (0.4 Kgf/cm2, 5.8 Psi) for 30 seconds or more.
- Check that each tire pressure data displayed on the intelligent tester screen changes.
Ok: the tire pressure data displayed on the intelligent tester screen changes with the value of the tire pressure.
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.
- After confirming that the tire pressure data displayed on the intelligent tester screen has changed, set the pressure of each tire to the specified value.
Standard pressure: 220 kpa (2.2 Kgf/cm2, 32 psi)
Hint:
If the tire pressure data displayed on the intelligent tester screen has not changed after rechecking, go to the troubleshooting procedures of dtcs c2121/ 21 to c2125/25 which indicate transmission or reception malfunctions (see page tw-28).
End
Diagnostic trouble code chart
Hint:
If a trouble code is displayed during the dtc check, check
the circuit listed for that code in the table below. Then
proceed to the appropriate page.
...
No signal from transmitter id
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 ...
Other materials:
When towing active torque control 4wd vehicles
Use one of the methods shown below to tow the
vehicle.
If the vehicle has trouble in the chassis and drivetrain,
use method 1 (flat bed truck).
Notice:
Do not use any towing method other than those
shown above.
For example, the towing methods shown below are
dangerous or dama ...
Installation
Hint:
Use the same procedures for the rh side and lh side.
The procedures listed below are for the lh side.
When installing the moulding, heat the vehicle body and
moulding using a heat light.
Standard heating temperature
Notice:
Do not heat the vehicle body and moulding
excessively ...
System description
General
The front passenger occupant classification system
judges whether the front passenger seat is occupied
or not in accordance with the seat belt buckle
status; and whether the seat is occupied by an adult
or child (with child seat) in accordance with the load
that is applied ...
