Toyota RAV4 (XA40) 2013-2018 Service Manual: Lost communication with driver side - side airbag sensor assembly
![Toyota RAV4. Lost communication with driver side - side airbag sensor assembly](images/books/256/64/4.htm21.jpg)
Description
The side airbag sensor lh consists of part 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 b1622/81 is set when a malfunction is detected in the side airbag sensor lh
circuit.
![Toyota RAV4. Lost communication with driver side - side airbag sensor assembly](images/books/256/64/4.htm22.jpg)
Wiring diagram
![Toyota RAV4. Lost communication with driver side - side airbag sensor assembly](images/books/256/64/4.htm23.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 lh and the side
airbag sensor lh.
Ok:
the connectors are properly connected.
![](images/books/256/64/4.htm24.gif)
![](images/books/256/64/4.htm25.gif)
- Check floor wire (open)
![Toyota RAV4. Check floor wire (open)](images/books/256/64/4.htm26.jpg)
- Disconnect the connectors from the center airbag sensor
and the side airbag sensor lh.
- Using a service wire, connect k8-4 (bbl+) and k8-3
(bbl-) 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
connector.
Standard resistance![](images/books/256/64/4.htm27.jpg)
![](images/books/256/64/4.htm28.gif)
![](images/books/256/64/4.htm29.gif)
- Check floor wire (short)
![Toyota RAV4. Check floor wire (short)](images/books/256/64/4.htm30.jpg)
- Disconnect the service wire from connector c.
- Measure the resistance of the wire harness side
connector
Standard resistance![](images/books/256/64/4.htm31.jpg)
![](images/books/256/64/4.htm32.gif)
![](images/books/256/64/4.htm33.gif)
- Check floor wire (to b+)
![Toyota RAV4. Check floor wire (to b+)](images/books/256/64/4.htm34.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.htm35.jpg)
![](images/books/256/64/4.htm36.gif)
![](images/books/256/64/4.htm37.gif)
- Check floor wire (to ground)
![Toyota RAV4. Check floor wire (to ground)](images/books/256/64/4.htm38.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.htm39.jpg)
![](images/books/256/64/4.htm40.gif)
![](images/books/256/64/4.htm41.gif)
- Check side airbag sensor lh
![Toyota RAV4. Check side airbag sensor lh](images/books/256/64/4.htm42.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.htm43.jpg)
![](images/books/256/64/4.htm44.gif)
![](images/books/256/64/4.htm45.gif)
![](images/books/256/64/4.htm46.gif)
Hint:
Dtcs other than dtc b1622/81 and b1627/82 may be
output at this time, but they are not related to this check.
Use simulation method to check
Description
The side airbag sensor lh consists of part including the diagnostic circuit
and the lateral deceleration
sensor.
When the center airbag sensor receives signals from the lateral ...
Description
The side airbag sensor lh consists of part including the diagnostic circuit
and the lateral deceleration
sensor.
When the center airbag sensor receives signals from the lateral ...
Other materials:
Front wiper motor
Inspection
Inspect front wiper motor
Check the lo operation.
Connect the battery's positive (+) lead to
terminal 5 (+1) and the negative (-) lead to
terminal 4 (e), and check that the front wiper
motor operates at low speed (lo).
Ok:
front wiper motor operates at low sp ...
Repair
Repair valve seats
If the seating is too high on the valve face, use 30°
and 45° cutters to correct the seat.
If the seating is too low on the valve face, use 75°
and 45° cutters to correct the seat.
Standard width
Lap the valve and valve seat by hand with an
abrasiv ...
Inside rear view mirror
The rear view mirror's position
can be adjusted to
enable sufficient confirmation
of the rear view.
Adjusting the height of
rear view mirror
The height of the rear view mirror
can be adjusted to suit your
driving posture.
Adjust the height of the rear
view mirror by moving it up and
down.
WARNING
...