AIRBAG SYSTEM, Diagnostic DTC:B1630/23 and B1635/24

DTC Code DTC Name
B1630/23 Rear Airbag Sensor RH Circuit Malfunction
B1635/24 Rear Airbag Sensor LH Circuit Malfunction

DESCRIPTION

  • The rear airbag sensor consists of the safing sensor, diagnostic circuit, lateral deceleration sensor, etc.

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

  • DTC B1630 or B1635 is stored when a malfunction is detected in the rear airbag sensor circuit.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Test Mode / Check Mode

B1630/23

Rear Airbag Sensor RH Circuit Malfunction

Either condition is met:

  • A rear airbag sensor RH malfunction.

  • A center airbag sensor malfunction.

  • Rear airbag sensor RH

  • Center airbag sensor assembly

*1

B1635/24

Rear Airbag Sensor LH Circuit Malfunction

Either condition is met:

  • A rear airbag sensor LH malfunction.

  • A center airbag sensor malfunction.

  • Rear airbag sensor LH

  • Center airbag sensor assembly

*1

WIRING DIAGRAM

C175145E13
C175145E14

CAUTION / NOTICE / HINT

Note:

  • After turning the engine 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 FOR DTC

    1. Turn the engine switch on (IG).

    2. Clear the DTCs stored in memory.

      Click here

      Body Electrical > SRS Airbag > Clear DTCs

    3. Turn the engine switch off.

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

    5. Check for DTCs.

      Click here

      Body Electrical > SRS Airbag > Trouble Codes

      Result

      Result

      Proceed to

      DTC B1630 and B1635 are not output

      A

      DTC B1635 is output

      B

      DTC B1630 is output

      C
      Tip:

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

    A

    USE SIMULATION METHOD TO CHECK

    Click here

    B

    CHECK REAR AIRBAG SENSOR LHClick here

    C

  2. CHECK REAR AIRBAG SENSOR RH

    1. C171812C08

      *1

      Rear Airbag Sensor LH

      *2

      Center Airbag Sensor

      Turn the engine switch off.

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

    3. Interchange the rear airbag sensor LH with RH 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 engine 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 engine switch off.

    8. Turn the engine switch on (IG), and wait for at least 90 seconds.

    9. Check for DTCs.

      Click here

      Body Electrical > SRS Airbag > Trouble Codes

      Result

      Result

      Proceed to

      DTC B1630 and B1635 are not output

      A

      DTC B1635 is output

      B

      DTC B1630 is output

      C
      Tip:

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

    10. Turn the engine switch off.

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

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

    A

    USE SIMULATION METHOD TO CHECK

    Click here

    B

    REPLACE REAR AIRBAG SENSOR RH

    Click here

    C

    REPLACE CENTER AIRBAG SENSOR ASSEMBLY

    Click here

  3. CHECK REAR AIRBAG SENSOR LH

    1. C146229C05

      *1

      Rear Airbag Sensor RH

      *2

      Center Airbag Sensor

      Turn the engine switch off.

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

    3. Interchange the rear airbag sensor LH with RH 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 engine 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 engine switch off.

    8. Turn the engine switch on (IG), and wait for at least 90 seconds.

    9. Check for DTCs.

      Click here

      Body Electrical > SRS Airbag > Trouble Codes

      Result

      Result

      Proceed to

      DTC B1630 and B1635 are not output

      A

      DTC B1630 is output

      B

      DTC B1635 is output

      C
      Tip:

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

    10. Turn the engine switch off.

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

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

    A

    USE SIMULATION METHOD TO CHECK

    Click here

    B

    REPLACE REAR AIRBAG SENSOR LH

    Click here

    C

    REPLACE CENTER AIRBAG SENSOR ASSEMBLY

    Click here