AIRBAG SYSTEM, Diagnostic DTC:B1620/21

DTC Code DTC Name
B1620/21 Side Airbag Sensor RH Circuit Malfunction

DESCRIPTION

The side airbag sensor assembly RH consists of a safing sensor, diagnostic circuit, lateral deceleration sensor, etc.

If the center airbag sensor assembly receives signals from the lateral deceleration sensor, it determines whether the SRS should be activated.

DTC B1620/21 is stored when a malfunction is detected in the side airbag sensor assembly RH circuit.

DTC Code Detection Condition Trouble Area
B1620/21

One of the following conditions is met:


  • A side airbag sensor assembly RH malfunction.

  • A center airbag sensor assembly malfunction.

  • Side airbag sensor assembly RH

  • Center airbag sensor assembly

WIRING DIAGRAM

A00OKAKE01

INSPECTION PROCEDURE

Note


  • After turning the ignition switch off, waiting time may be required before disconnecting the cable from the battery terminal. Therefore, make sure to read the disconnecting the cable from the battery terminal notice before proceeding with work Click here.

  • When disconnecting the cable from the negative (-) battery terminal while performing repairs, some systems need to be initialized after the cable is reconnected Click here.

PROCEDURE


  1. CHECK SIDE AIRBAG SENSOR ASSEMBLY RH


    1. A00OI1TE01
      Text in Illustration
      *1 Side Airbag Sensor Assembly LH
      *2 Center Airbag Sensor Assembly

      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 assembly RH with 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 to ON, and wait for at least 60 seconds.

    6. Clear the DTCs stored in the memory Click here.

    7. Turn the ignition switch off.

    8. Turn the ignition switch to ON, and wait for at least 60 seconds.

    9. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1620/21 and B1625/22 are not output A
      DTC B1625/22 is output B
      DTC B1620/21 is output C

      Tech Tips

      Codes other than DTC B1620/21 and B1625/22 may be output at this time, but they are not related to this check.

    10. Turn the ignition switch off.

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

    12. Return the side airbag sensor assembly LH and RH to their original positions and connect the connectors to them.


    B

    REPLACE SIDE AIRBAG SENSOR ASSEMBLY RH Click here

    C

    REPLACE CENTER AIRBAG SENSOR ASSEMBLY Click here

    A

    USE SIMULATION METHOD TO CHECK Click here