AIRBAG SYSTEM, Diagnostic DTC:B1620/21

DTC Code DTC Name
B1620/21 Driver Side - Side Airbag Sensor Malfunction

DESCRIPTION

The driver side - side collision sensor circuit (to determine deployment of the front seat side airbag assembly (driver side) and curtain shield airbag assembly (driver side)) is composed of the center airbag sensor assembly, side airbag sensor (driver side), and rear airbag sensor (driver side).

The side airbag sensor (driver side) and rear airbag sensor (driver side) detect impacts to the vehicle and send signals to the center airbag sensor assembly to determine if the airbag should be deployed.

DTC B1620/21 is recorded when a malfunction is detected in the side airbag sensor (driver side) circuit.

DTC No. DTC Detection Condition Trouble Area
B1620/21

  • Side airbag sensor (driver side) malfunction

  • Center airbag sensor assembly malfunction

  • Side airbag sensor (Driver side)

  • Center airbag sensor assembly

WIRING DIAGRAM

A0160YYE06

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK SIDE AIRBAG SENSOR (DRIVER SIDE)


    1. A0162EGE01

      Turn the engine switch off.

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

    3. Interchange the side airbag sensor (passenger side) with side airbag sensor (driver side) and connect the connectors.

    4. Connect the cable to the negative (-) battery terminal.

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

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

    7. Turn the engine switch off.

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

    9. Check for DTCs Click here.

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


    B

    REPLACE CENTER AIRBAG SENSOR ASSEMBLY Click here

    C

    REPLACE SIDE AIRBAG SENSOR (DRIVER SIDE) Click here

    A

    USE SIMULATION METHOD TO CHECK Click here