AIRBAG SYSTEM, Diagnostic DTC:B1635, B16F7

DTC Code DTC Name
B1635 Side No. 2 Airbag Sensor LH Malfunction
B16F7 Side No. 2 Airbag Sensor LH Mismatch

DESCRIPTION

The side collision sensor LH circuit (to determine deployment of the front seat airbag assembly LH, curtain shield airbag assembly LH and front seat outer belt assembly LH) is composed of the airbag ECU assembly, side airbag sensor assembly LH, side No. 2 airbag sensor assembly LH and rear airbag sensor LH and No. 2 airbag sensor assembly.

The rear airbag sensor LH detects impacts to the vehicle and sends signals to the airbag ECU assembly to determine if the airbag should be deployed.

These DTCs are stored when a malfunction is detected in the rear airbag sensor LH.

DTC No. DTC Detection Condition Trouble Area
B1635

  • Rear airbag sensor LH malfunction

  • Airbag ECU assembly malfunction

  • Rear airbag sensor LH

  • Airbag ECU assembly
B16F7

  • Improper installation of rear airbag sensor LH

  • Airbag ECU assembly malfunction

WIRING DIAGRAM

Refer to DTCs B1627, B1628, B1637, B1638, B1647, B1697 and B1698 Click here.

CAUTION / NOTICE / HINT

Note

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

PROCEDURE


  1. CHECK REAR AIRBAG SENSOR LH


    1. A004IWNE03
      Text in Illustration
      *1 Rear Airbag Sensor RH
      *2 Side No. 2 Airbag Sensor Assembly LH

      Turn the ignition switch off.

    2. Disconnect the cable from the negative (-) battery terminal.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    3. Interchange the rear airbag sensor LH with RH and connect the connectors to them.

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

    5. Clear the DTCs stored in memory Click here.

    6. Turn the ignition switch off.

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

    8. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1635 or B16F7 is output. A
      DTC B1630 or B16F6 is output. B
      DTCs B1630, B1635, B16F6 and B16F7 are not output. C

      Tech Tips

      Codes other than DTCs B1630, B1635, B16F6 and B16F7 may be output at this time, but they are not related to this check.

    9. Turn the ignition switch off.

    10. Disconnect the cable from the negative (-) battery terminal.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    11. Return the rear airbag sensor LH and RH to their original positions and connect the connectors.


    A

    REPLACE AIRBAG ECU ASSEMBLY Click here

    B

    REPLACE REAR AIRBAG SENSOR LH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here