Toyota RAV4 manuals

Toyota RAV4 Service Manual: Driver side - side airbag sensor circuit malfunction

Toyota RAV4 Service Manual / Supplemental restraint system / Airbag system / Diagnostic trouble code chart / Driver side - side airbag sensor circuit malfunction

Toyota RAV4. Driver side - side airbag sensor circuit malfunction


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 b1620/21 is set when a malfunction is detected in the side airbag sensor lh circuit.

Toyota RAV4. Driver side - side airbag sensor circuit malfunction


Wiring diagram

Toyota RAV4. Driver side - side airbag sensor circuit malfunction


Inspection procedure

  1. Check side airbag sensor lh

Toyota RAV4. Check side airbag sensor lh


  1. Turn the ignition switch off.
  2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
  3. Interchange the side airbag sensor rh and the side airbag sensor lh, and connect the connectors to them.
  4. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
  5. Turn the ignition switch on, and wait for at least 60 seconds.
  6. Clear the dtcs (see page rs-49).
  7. Turn the ignition switch off.
  8. Turn the ignition switch on, and wait for at least 60 seconds.
  9. Check the dtcs (see page rs-49).

Result


Dtcs other than dtc b1620/21 and b1625/22 may be output at this time, but they are not related to this check.



Use simulation method to check

Front airbag sensor lh circuit malfunction
Description The front airbag sensor lh consists of the diagnostic circuit, the frontal deceleration sensor, etc. If the center airbag sensor receives signals from the frontal deceleration sens ...

Lost communication with driver side - side airbag sensor assembly
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:

Removal
Discharge fuel system pressure (see page fu-9) Disconnect cable from negative battery terminal Caution: Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to prevent airbag and seat belt pretensioner activation. Remove hood sub-assembly ( ...

Radiator
Components On-vehicle inspection Check radiator reservoir cap subassembly Measure the valve opening pressure. If there are water stains or foreign matter on oring 1, clean it with water and finger scouring. Check that o-ring 1 is not deformed, cracked or sw ...

Disposal
Hint: When scrapping vehicles equipped with a seat belt pretensioner or disposing of a front seat outer belt (with seat belt pretensioner), always first activate the seat belt pretensioner in accordance with the procedures described below. If any abnormality occurs during activation of the seat ...

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