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 rear airbag sensor 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 rear airbag sensor LH or RH circuit.

DTC No. Detection Item DTC Detection Condition Trouble Area Warning Indicate Test Mode / Check Mode
B1630/23 Rear Airbag Sensor RH Circuit Malfunction

Either condition is met:


  • A rear airbag sensor RH malfunction.

  • An airbag ECU assembly malfunction.

  • Rear airbag sensor RH

  • Airbag ECU assembly

 Comes on Not applicable
B1632/81 Lost Communication with Rear Airbag Sensor RH

Either condition is met:


  • A rear airbag sensor RH malfunction.

  • An airbag ECU assembly malfunction.

  • Rear airbag sensor RH

  • Airbag ECU assembly

 Comes on Not applicable
B1635/24 Rear Airbag Sensor LH Circuit Malfunction

Either condition is met:


  • A rear airbag sensor LH malfunction.

  • An airbag ECU assembly malfunction.

  • Rear airbag sensor LH

  • Airbag ECU assembly

 Comes on Not applicable
B1637/82 Lost Communication with Rear Airbag Sensor LH

Either condition is met:


  • A rear airbag sensor LH malfunction.

  • An airbag ECU assembly malfunction.

  • Rear airbag sensor LH

  • Airbag ECU assembly

 Comes on Not applicable

WIRING DIAGRAM

B004CE4E53
*a Airbag ECU Assembly
*b Rear Airbag Sensor RH
*c Door Side Airbag Sensor RH
B004CE4E55
*a Airbag ECU Assembly
*b Rear Airbag Sensor 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

PROCEDURE


  1. CHECK DTC


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

    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 REAR AIRBAG SENSOR 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 REAR AIRBAG SENSOR LH


    1. B004AU8C33
      *1 Rear Airbag Sensor 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 rear airbag sensor 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 rear airbag sensor RH and LH to their original positions and connect the connectors to them.


    DTC B1630/23 or B1632/81 is output

    REPLACE REAR AIRBAG SENSOR 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 REAR AIRBAG SENSOR RH


    1. B004CN0C31
      *1 Rear Airbag Sensor 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 rear airbag sensor 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 rear airbag sensor LH and RH to their original positions and connect the connectors to them.


    DTC B1635/24 or B1637/82 is output

    REPLACE REAR AIRBAG SENSOR 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