Toyota RAV4 (XA40) 2013-2018 Service Manual: Lost communication with front passenger side - side airbag sensor assembly
![Toyota RAV4. Lost communication with front passenger side - side airbag sensor assembly](images/books/256/64/4.htm99.jpg)
Description
The side airbag sensor rh consists of parts including the diagnostic circuit
and the lateral deceleration
sensor.
When the center airbag sensor receives signals from the lateral deceleration
sensor, it determines
whether or not the srs should be activated.
Dtc b1627/82 is set when a malfunction is detected in the side airbag sensor rh
circuit.
Wiring diagram
![Toyota RAV4. Lost communication with front passenger side - side airbag sensor assembly](images/books/256/64/4.htm1.jpg)
Inspection procedure
- Check connection of connector
- Turn the ignition switch off.
- Disconnect the cable from the negative (-) battery
terminal, and wait for at least 90 seconds.
- Check that the connectors are properly connected to the
center airbag sensor, rear airbag sensor rh and the side
airbag sensor rh.
Ok:
the connectors are properly connected.
![](images/books/256/64/4.htm2.gif)
![](images/books/256/64/4.htm3.gif)
- Check floor wire (open)
![Toyota RAV4. Check floor wire (open)](images/books/256/64/4.htm6.jpg)
- Disconnect the connectors from the center airbag sensor
and the side airbag sensor rh.
- Using a service wire, connect l10-4 (bbr+) and l10-3
(bbr-) of connector c.
Notice:
Do not forcibly insert the service wire into the
terminals of the connector when connecting.
- Measure the resistance of the wire harness side
connectors.
Standard resistance![](images/books/256/64/4.htm12.jpg)
![](images/books/256/64/4.htm7.gif)
![](images/books/256/64/4.htm8.gif)
- Check floor wire (short)
![Toyota RAV4. Check floor wire (short)](images/books/256/64/4.htm19.jpg)
- Disconnect the service wire from connector c.
- Measure the resistance of the wire harness side
connector.
Standard resistance ![](images/books/256/64/4.htm24.jpg)
![](images/books/256/64/4.htm11.gif)
- Check floor wire (to b+)
![Toyota RAV4. Check floor wire (to b+)](images/books/256/64/4.htm25.jpg)
- Connect the cable to the negative (-) battery terminal,
and wait for at least 2 seconds.
- Turn the ignition switch on.
- Measure the voltage of the wire harness side connector.
Standard voltage ![](images/books/256/64/4.htm28.jpg)
![](images/books/256/64/4.htm15.gif)
- Check floor wire (to ground)
![Toyota RAV4. Check floor wire (to ground)](images/books/256/64/4.htm29.jpg)
- Turn the ignition switch off.
- Disconnect the cable from the negative (-) battery
terminal, and wait for at least 90 seconds.
- Measure the resistance of the wire harness side
connector.
Standard resistance ![](images/books/256/64/4.htm32.jpg)
![](images/books/256/64/4.htm20.gif)
- Check side airbag sensor rh
![Toyota RAV4. Check side airbag sensor rh](images/books/256/64/4.htm33.jpg)
- Connect the connectors to the center airbag sensor.
- Interchange the side airbag sensor rh with the side
airbag sensor lh and connect the connectors to them.
- Connect the cable to the negative (-) battery terminal,
and wait for at least 2 seconds.
- Turn the ignition switch on, and wait for at least 60
seconds.
- Clear the dtcs (see page rs-49).
- Turn the ignition switch off.
- Turn the ignition switch on, and wait for at least 60
seconds.
- Check for dtcs (see page rs-49).
Result ![](images/books/256/64/4.htm36.jpg)
Hint:
Dtcs other than dtc b1622/81 and b1627/82 may be
output at this time, but they are not related to this check.
![](images/books/256/64/4.htm26.gif)
Use simulation method to check
Description
The side airbag sensor rh consists of parts including the diagnostic circuit
and the lateral deceleration
sensor.
When the center airbag sensor receives signals from the lateral ...
Description
The side airbag sensor rh consists of parts including the diagnostic circuit
and the lateral deceleration
sensor.
When the center airbag sensor receives signals from the lateral ...
Other materials:
Mil circuit
Description
The mil (malfunction indicator lamp) is used to indicate vehicle malfunction
detections by the ecm.
When the ignition switch is turned on, power is supplied to the mil circuit, and
the ecm provides the
circuit ground which illuminates the mil.
The mil operation can be checked ...
Only back door lock / unlock functions do not operate
Description
The main body ecu receives lock / unlock switch signals and activates the
door lock motor accordingly.
Wiring diagram
Inspection procedure
Inspect back door with motor lock assembly
Apply the battery voltage to the door lock motor and
check the operation of the d ...
Problem symptoms table (2006/01- )
Hint:
Use the table below to help determine the cause of the
problem symptom. The potential causes of the symptoms are
listed in order of probability in the "suspected area" column
of the table. Check each symptom by checking the suspected
areas in the order they are listed. Replace p ...