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 safing sensor, diagnostic circuit, lateral deceleration sensor, etc.

If the center airbag sensor 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 Code DTC Detection Condition Trouble Area

B1630/23

B1632/81

Either condition is met:


  • A rear airbag sensor RH malfunction.

  • A center airbag sensor assembly malfunction.

  • Rear airbag sensor RH

  • Center airbag sensor assembly

B1635/24

B1637/82

Either condition is met:


  • A rear airbag sensor LH malfunction.

  • A center airbag sensor assembly malfunction.

  • Rear airbag sensor LH

  • Center airbag sensor assembly

WIRING DIAGRAM

A01FFG2E10
A01FFG2E11

INSPECTION PROCEDURE

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 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.

    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.

      Result
      Result Proceed to
      DTC B1630/23, B1632/81, B1635/24 and B1637/82 are not output A
      DTC B1635/24 or B1637/82 is output B
      DTC B1630/23 or B1632/81 is output C

    A

    USE SIMULATION METHOD TO CHECK Click here

    B

    CHECK REAR AIRBAG SENSOR LH Click here

    C

  2. CHECK REAR AIRBAG SENSOR RH


    1. A01FDIXE37
      Text in Illustration
      *1 Rear Airbag Sensor LH
      *2 Center Airbag Sensor Assembly

      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 RH with LH 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.

    7. Turn the engine switch off.

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

    9. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1630/23, B1632/81, B1635/24 and B1637/82 are not output A
      DTC B1635/24 or B1637/82 is output B
      DTC B1630/23 or B1632/81 is output C

      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 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. A01FGF1E03
      Text in Illustration
      *1 Rear Airbag Sensor RH
      *2 Center Airbag Sensor Assembly

      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.

    7. Turn the engine switch off.

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

    9. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1630/23, B1632/81, B1635/24 and B1637/82 are not output A
      DTC B1630/23 or B1632/81 is output B
      DTC B1635/24 or B1637/82 is output C

      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 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 RH and LH 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