Toyota RAV4 manuals

Toyota RAV4 (XA40) 2013-2018 Service Manual: 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:

RCTA (Rear Cross Traffic Alert) function
The RCTA function uses the BSM rear side radar sensors installed behind the rear bumper. This function is intended to assist the driver in checking areas that are not easily visible when backing up. WARNING â– Cautions regarding the use of the system The driver is solely responsible for safe driving ...

Engine coolant temperature circuit
Description A thermistor, whose resistance value varies according to the ect, is built into the engine coolant temperature (ect) sensor. The structure of the sensor and its connection to the ecm are the same as those of the intake air temperature (iat) sensor. Hint: When any of dtcs ...

System description
Lighting system Illumination control system (illuminated entry system): When the doors are unlocked by a key or transmitter operation, or when a door is opened or closed, the illuminated entry system turns on the room light, map light, foot light and ignition key cylinder light*1 o ...

© 2011-2025 Copyright www.trav4.net