Toyota RAV4 manuals

Toyota RAV4 Service Manual: Lost communication with front passenger side - side airbag sensor assembly

Toyota RAV4 Service Manual / Supplemental restraint system / Airbag system / Diagnostic trouble code chart / Lost communication with front passenger side - side airbag sensor assembly

Toyota RAV4. Lost communication with front passenger side - side airbag sensor assembly


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


Inspection procedure

  1. Check connection of connector

  1. Turn the ignition switch off.
  2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
  3. 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.


  1. Check floor wire (open)

Toyota RAV4. Check floor wire (open)


  1. Disconnect the connectors from the center airbag sensor and the side airbag sensor rh.
  2. 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.

  1. Measure the resistance of the wire harness side connectors.

Standard resistance



  1. Check floor wire (short)

Toyota RAV4. Check floor wire (short)


  1. Disconnect the service wire from connector c.
  2. Measure the resistance of the wire harness side connector.

Standard resistance




  1. Check floor wire (to b+)

Toyota RAV4. Check floor wire (to b+)


  1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
  2. Turn the ignition switch on.
  3. Measure the voltage of the wire harness side connector.

Standard voltage




  1. Check floor wire (to ground)

Toyota RAV4. Check floor wire (to ground)


  1. Turn the ignition switch off.
  2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
  3. Measure the resistance of the wire harness side connector.

Standard resistance




  1. Check side airbag sensor rh

Toyota RAV4. Check side airbag sensor rh


  1. Connect the connectors to the center airbag sensor.
  2. Interchange the side airbag sensor rh with the side airbag sensor lh and connect the connectors to them.
  3. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
  4. Turn the ignition switch on, and wait for at least 60 seconds.
  5. Clear the dtcs (see page rs-49).
  6. Turn the ignition switch off.
  7. Turn the ignition switch on, and wait for at least 60 seconds.
  8. Check for dtcs (see page rs-49).

Result


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

Front passenger side - side airbag sensor circuit malfunction
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 ...

Front passenger side - side airbag sensor assembly initialization incomplete
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:

Driver side seat belt warning light does not operate
Description When the ignition switch is on, the center airbag sensor transmits front seat inner belt status signals to the combination meter through the can bus line. If the driver seat belt is not fastened, the combination meter blinks the driver side seat belt warning light. If the seat bel ...

On-vehicle inspection
Check ignition coil assembly and perform spark test Notice: in this section, the terms "cold" and "hot" refer to the temperature of the coils. "Cold" means approximately -10 to 50°c (14 to 122°f). "Hot" means approximately 50 to 100°c (122 to 212 ...

Parking brake
Sets the parking brake Fully pull the parking brake while depressing the brake pedal. Releases the parking brake Slightly raise the lever and lower it completely while pressing the button. Usage in winter time Notice Before driving Fully release the parking brake. Driving t ...

© 2011-2021 Copyright www.trav4.net