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AIRBAG SYSTEM, Diagnostic DTC:B1635/24

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DTC Code DTC Name
B1635/24 Rear Airbag Sensor LH Circuit Malfunction
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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) consists of the airbag ECU assembly, side airbag sensor assembly LH, rear airbag sensor LH and door side airbag sensor LH.

The side airbag sensor assembly LH, rear airbag sensor LH and door side airbag sensor LH detect impacts to the vehicle and send signals to the airbag ECU assembly to determine if the airbags and pretensioner should be deployed.

DTC B1635/24 is stored when a malfunction is detected in the rear airbag sensor LH.

DTC No. Detection Item DTC Detection Condition Trouble Area Test Mode / Check Mode
B1635/24 Rear Airbag Sensor LH Circuit Malfunction

  • Rear airbag sensor LH malfunction

  • Airbag ECU assembly malfunction

  • Rear airbag sensor LH

  • Airbag ECU assembly

 Does not apply to test/check mode
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WIRING DIAGRAM

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CAUTION / NOTICE / HINT

Note:

After turning the engine 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.

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PROCEDURE


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    CHECK REAR AIRBAG SENSOR LH


    1. B006719C02
      *1 Rear Airbag Sensor RH
      *2 Airbag ECU Assembly

      Turn the engine 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.

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

    5. Clear the DTCs stored in memory.

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      1. Body Electrical > SRS Airbag > Clear DTCs


    6. Turn the engine switch off.

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

    8. Check for DTCs.

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      1. Body Electrical > SRS Airbag > Trouble Codes


      Tip:

      Codes other than DTCs B1630/23 and B1635/24 may be output at this time, but they are not related to this check.

      Result
      Result Proceed to
      DTC B1635/24 is output. A
      DTC B1630/23 is output. B
      DTCs B1630/23 and B1635/24 are not output. C

    9. Turn the engine 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.