AIRBAG SYSTEM, Diagnostic DTC:B1630/23, B1632/81, B1635/24, B1637/82

DTC Code DTC Name
B1630/23 Rear Airbag Sensor RH Circuit Malfunction
B1632/81 Lost Communication with Rear Airbag Sensor RH
B1635/24 Rear Airbag Sensor LH Circuit Malfunction
B1637/82 Lost Communication with Rear Airbag Sensor LH

DESCRIPTION

The side airbag sensor assembly LH or RH consists of a lateral deceleration sensor, etc.

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

DTC B1630/23, B1632/81, B1635/24 or B1637/82 is stored when a malfunction is detected in the side airbag sensor assembly LH or RH circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area
B1630/23 Rear Airbag Sensor RH Circuit Malfunction

Either condition is met:


  • A side airbag sensor assembly RH malfunction.

  • An airbag ECU assembly malfunction.

  • Side airbag sensor assembly RH

  • Airbag ECU assembly
B1632/81 Lost Communication with Rear Airbag Sensor RH

Either condition is met:


  • A side airbag sensor assembly RH malfunction.

  • An airbag ECU assembly malfunction.

  • Side airbag sensor assembly RH

  • Airbag ECU assembly
B1635/24 Rear Airbag Sensor LH Circuit Malfunction

Either condition is met:


  • A side airbag sensor assembly LH malfunction.

  • An airbag ECU assembly malfunction.

  • Side airbag sensor assembly LH

  • Airbag ECU assembly
B1637/82 Lost Communication with Rear Airbag Sensor LH

Either condition is met:


  • A side airbag sensor assembly LH malfunction.

  • An airbag ECU assembly malfunction.

  • Side airbag sensor assembly LH

  • Airbag ECU assembly

WIRING DIAGRAM

B002IWLE10
*a Airbag ECU Assembly
*b Side Airbag Sensor Assembly RH
*c Door Side Airbag Sensor RH
B002IWLE13
*a Airbag ECU Assembly
*b Side Airbag Sensor Assembly LH
*c Door Side Airbag Sensor LH

CAUTION / NOTICE / HINT

Note


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

    Click here

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

    Click here

  • After replacing the airbag ECU assembly, refer to initialization.

    Click here

PROCEDURE


  1. CHECK DTC


    1. Turn the power switch on (IG).

    2. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    3. Turn the power switch off.

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

    5. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes
      Result
      Proceed to
      DTC B1635/24 or B1637/82 is output
      DTC B1630/23 or B1632/81 is output
      DTC B1630/23, B1632/81, B1635/24 and B1637/82 are not output

      Tech Tips

      Codes other than DTC B1630/23, B1632/81, B1635/24 and B1637/82 may be output at this time, but they are not related to this check.


    DTC B1630/23 or B1632/81 is output

    CHECK SIDE AIRBAG SENSOR ASSEMBLY RH Click here

    DTC B1630/23, B1632/81, B1635/24 and B1637/82 are not output

    USE SIMULATION METHOD TO CHECK Click here

    DTC B1635/24 or B1637/82 is output

  2. CHECK SIDE AIRBAG SENSOR ASSEMBLY LH


    1. B002J0OC31
      *1 Side Airbag Sensor Assembly RH
      *2 Airbag ECU Assembly

      Turn the power switch off.

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

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

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

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

    6. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    7. Turn the power switch off.

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

    9. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes
      Result
      Proceed to
      DTC B1630/23 or B1632/81 is output
      DTC B1635/24 or B1637/82 is output
      DTC B1630/23, B1632/81, B1635/24 and B1637/82 are not output

      Tech Tips

      Codes other than DTC B1630/23, B1632/81, B1635/24 and B1637/82 may be output at this time, but they are not related to this check.

    10. Turn the power switch off.

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

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


    DTC B1630/23 or B1632/81 is output

    REPLACE SIDE AIRBAG SENSOR ASSEMBLY LH Click here

    DTC B1635/24 or B1637/82 is output

    REPLACE AIRBAG ECU ASSEMBLY Click here

    DTC B1630/23, B1632/81, B1635/24 and B1637/82 are not output

    USE SIMULATION METHOD TO CHECK Click here

  3. CHECK SIDE AIRBAG SENSOR ASSEMBLY RH


    1. B002HDBC33
      *1 Side Airbag Sensor Assembly LH
      *2 Airbag ECU Assembly

      Turn the power switch off.

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

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

    6. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    7. Turn the power switch off.

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

    9. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes
      Result
      Proceed to
      DTC B1635/24 or B1637/82 is output
      DTC B1630/23 or B1632/81 is output
      DTC B1630/23, B1632/81, B1635/24 and B1637/82 are not output

      Tech Tips

      Codes other than DTC B1630/23, B1632/81, B1635/24 and B1637/82 may be output at this time, but they are not related to this check.

    10. Turn the power switch off.

    11. Disconnect the cable from the negative (-) auxiliary 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.


    DTC B1635/24 or B1637/82 is output

    REPLACE SIDE AIRBAG SENSOR ASSEMBLY RH Click here

    DTC B1630/23 or B1632/81 is output

    REPLACE AIRBAG ECU ASSEMBLY Click here

    DTC B1630/23, B1632/81, B1635/24 and B1637/82 are not output

    USE SIMULATION METHOD TO CHECK Click here