Dtc B1620/21 Driver Side - Side Airbag Sensor Circuit Malfunction

Restraints. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35
Supplemental Restraint System. Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35

DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK DRIVER SIDE - SIDE AIRBAG SENSOR

DTC B1620/21 Driver Side - Side Airbag Sensor Circuit Malfunction


DESCRIPTION

The driver side - side airbag sensor 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 B1620/21 is set when a malfunction is detected in the driver side - side airbag sensor circuit.

DTC No.
DTC Detection Condition
Trouble Area
B1620/21
When one of following conditions is met:
  1. Driver side - side airbag sensor malfunction
  2. Center airbag sensor malfunction
  1. Side airbag sensor LH (Driver side-side airbag sensor) (for LHD)
  2. Side airbag sensor RH (Driver side-side airbag sensor) (for RHD)
  3. Center airbag sensor assembly

WIRING DIAGRAM


Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System.
Dtc
  B1620/21  Driver Side - Side Airbag Sensor Circuit Malfunction


INSPECTION PROCEDURE

1.CHECK DRIVER SIDE - SIDE AIRBAG SENSOR
Toyota Rav4. Aca30, 33, 38 Gsa33 Zsa30, 35.Supplemental Restraint System.Airbag System.
Dtc
  B1620/21  Driver Side - Side Airbag Sensor Circuit Malfunction
  1. Turn the ignition switch off.

  1. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

  1. Interchange the driver side - side airbag sensor with the front passenger side - side airbag sensor and connect the connectors to them.

  1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

  1. Turn the ignition switch on (IG), and wait for at least 60 seconds.

  1. Clear the DTCs (RAV4_ACA30 RM000000XFE06SX.html).

  1. Turn the ignition switch off.

  1. Turn the ignition switch on (IG), and wait for at least 60 seconds.

  1. Check the DTCs (RAV4_ACA30 RM000000XFE06SX.html).

    Result
    Result
    Proceed to
    DTC B1620/21 and B1625/22 are not output.
    A
    DTC B1620/21 is output.
    B
    DTC B1625/22 is output.
    C
    HINT:
    DTCs other than DTC B1620/21 and B1625/22 may be output at this time, but they are not related to this check.


B
REPLACE CENTER AIRBAG SENSOR ASSEMBLY

C
REPLACE DRIVER SIDE - SIDE AIRBAG SENSOR
A

USE SIMULATION METHOD TO CHECK