AIRBAG SYSTEM, Diagnostic DTC:B1630/23, B1690/15

DTC Code DTC Name
B1630/23 Rear Airbag Sensor RH Circuit Malfunction
B1690/15 Door Side Airbag Sensor RH Malfunction

DESCRIPTION

The rear airbag sensor RH and No. 2 side airbag sensor assembly RH consists of a safing sensor, diagnostic circuit, lateral deceleration sensor, etc.

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

DTC B1630/23 is stored when a malfunction is detected in the rear airbag sensor RH circuit.

DTC B1690/15 is stored when a malfunction is detected in the No. 2 side airbag sensor assembly RH circuit.

DTC Code Detection Condition Trouble Area
B1630/23

One of the following conditions is met:


  • The airbag sensor assembly detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in the rear airbag sensor RH circuit for 2 seconds.

  • A rear airbag sensor RH malfunction.

  • A No. 2 side airbag sensor assembly RH malfunction.

  • An airbag sensor malfunction.

  • Rear airbag sensor RH

  • No. 2 side airbag sensor assembly RH

  • No. 2 floor wire

  • Front door wire RH

  • Airbag sensor assembly
B1690/15

One of the following conditions is met:


  • The airbag sensor assembly detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in the No. 2 side airbag sensor assembly RH circuit for 2 seconds.

  • A rear airbag sensor RH malfunction.

  • A No. 2 side airbag sensor assembly RH malfunction.

  • An airbag sensor malfunction.

  • Rear airbag sensor RH

  • No. 2 side airbag sensor assembly RH

  • No. 2 floor wire

  • Front door wire RH

  • Airbag sensor assembly

WIRING DIAGRAM

A004NQQE10
*a Airbag Sensor Assembly
*b Rear Airbag Sensor RH
*c No. 2 Side Airbag Sensor Assembly RH

CAUTION / NOTICE / HINT

Note


  • After turning the ignition 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 CONNECTION OF CONNECTORS


    1. Turn the ignition switch off.

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

    3. Check that the connectors are properly connected to the airbag sensor assembly and rear airbag sensor RH.

      OK
      The connectors are properly connected.

    NG

    CONNECT CONNECTORS PROPERLY

    OK

  2. CHECK CONNECTORS


    1. A004NU3E08
      Text in Illustration
      *1 Rear Airbag Sensor RH
      *2 Airbag Sensor Assembly
      *3 No. 2 Floor Wire

      Disconnect the connectors from the airbag sensor assembly and rear airbag sensor RH.

    2. Check that the connectors (on the airbag sensor assembly side and rear airbag sensor RH side) are not damaged.

      OK
      The connectors are not deformed or damaged.

    NG

    REPLACE NO. 2 FLOOR WIRE

    OK

  3. CHECK NO. 2 FLOOR WIRE


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

      A004P36E02
      Text in Illustration
      *1 Rear Airbag Sensor RH *2 Airbag Sensor Assembly
      *3 No. 2 Floor Wire *4 Connector C
      *5 Connector B *6 Service Wire
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)

      		 *b

      Rear view of wire harness connector

      (to Airbag Sensor Assembly)

    2. Turn the ignition switch to ON.

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      H25-4 (BCR+) - Body ground Ignition switch ON Below 1 V
      H25-3 (BCR-) - Body ground Ignition switch ON Below 1 V

    4. Turn the ignition switch off.

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

    6. Using a service wire, connect terminals 17 (BBR+) and 18 (BBR-) of connector B.

      Note

      Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.

    7. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H25-4 (BCR+) - H25-3 (BCR-) Always Below 1 Ω

    8. Disconnect the service wire from connector B.

    9. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H25-4 (BCR+) - H25-3 (BCR-) Always 1 MΩ or higher
      H25-4 (BCR+) - Body ground Always 1 MΩ or higher
      H25-3 (BCR-) - Body ground Always 1 MΩ or higher

    NG

    REPLACE NO. 2 FLOOR WIRE

    OK

  4. CHECK REAR AIRBAG SENSOR RH


    1. A004NVWE27
      Text in Illustration
      *1 Rear Airbag Sensor LH
      *2 Airbag Sensor Assembly

      Connect the connectors to the airbag sensor assembly.

    2. Interchange the rear airbag sensor RH with LH and connect the connectors to them.

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

    4. Turn the ignition switch to ON, and wait for at least 60 seconds.

    5. Clear the DTCs stored in the memory Click here.

    6. Turn the ignition switch off.

    7. Turn the ignition switch to ON, and wait for at least 60 seconds.

    8. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1630/23, B1635/24, B1690/15 or B1695/16 is not output A
      DTC B1635/24 or B1695/16 is output (for Sedan) B
      DTC B1635/24 or B1695/16 is output (for Wagon) C
      DTC B1630/23 or B1690/15 is output D

      Tech Tips

      Codes other than DTC B1630/23, B1635/24, B1690/15 and B1695/16 may be output at this time, but they are not related to this check.

    9. Turn the ignition switch off.

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

    11. 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 REAR AIRBAG SENSOR RH Click here

    D

  5. CHECK CONNECTION OF CONNECTOR


    1. Check that the connector is properly connected to the No. 2 side airbag sensor assembly RH.

      OK
      The connector is properly connected.

    NG

    CONNECT CONNECTORS PROPERLY

    OK

  6. CHECK CONNECTOR


    1. A004R00E04
      Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly RH
      *2 Rear Airbag Sensor RH

      Disconnect the connectors from the rear airbag sensor RH and No. 2 side airbag sensor assembly RH.

    2. Check that the connector (on the No. 2 side airbag sensor assembly RH side) is not damaged.

      OK
      The connector is not deformed or damaged.

    NG

    REPLACE HARNESS AND CONNECTOR

    OK

  7. CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY RH CIRCUIT


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

      A004OOBE02
      Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly RH *2 Rear Airbag Sensor RH
      *3 Connector E *4 Connector B
      *5 Service Wire - -
      *a

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly RH)

      		 *b

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)

    2. Turn the ignition switch to ON.

    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      H25-1 (BDR+) - Body ground Ignition switch ON Below 1 V
      H25-2 (BDR-) - Body ground Ignition switch ON Below 1 V

    4. Turn the ignition switch off.

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

    6. Using a service wire, connect terminals 2 (BDR+) and 1 (BDR-) of connector E.

      Note

      Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.

    7. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H25-1 (BDR+) - H25-2 (BDR-) Always Below 1 Ω

    8. Disconnect the service wire from connector E.

    9. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H25-1 (BDR+) - H25-2 (BDR-) Always 1 MΩ or higher
      H25-1 (BDR+) - Body ground Always 1 MΩ or higher
      H25-2 (BDR-) - Body ground Always 1 MΩ or higher

    NG

    CHECK NO. 2 FLOOR WIRE Click here

    OK

  8. CHECK FOR DTC

    A004TTHE10
    Text in Illustration
    *1 No. 2 Side Airbag Sensor Assembly RH
    *2 Rear Airbag Sensor RH

    1. Connect the connector to the rear airbag sensor RH.

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

    3. Turn the ignition switch to ON, and wait for at least 60 seconds.

    4. Clear the DTCs stored in the memory Click here.

    5. Turn the ignition switch off.

    6. Turn the ignition switch to ON, and wait for at least 60 seconds.

    7. Check for DTCs Click here.

      OK
      DTC B1630/23 or B1690/15 is output.

      Tech Tips

      Codes other than B1630/23 and B1690/15 may be output at this time, but they are not related to this check.


    OK

    REPLACE AIRBAG SENSOR ASSEMBLY Click here

    NG

    REPLACE NO. 2 SIDE AIRBAG SENSOR ASSEMBLY RH Click here

  9. CHECK NO. 2 FLOOR WIRE


    1. Disconnect the No. 2 floor wire connector from the front door wire RH.

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

      A004TZVE02
      Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly RH *2 Rear Airbag Sensor RH
      *3 Front Door Wire RH *4 No. 2 Floor Wire
      *5 Connector C *6 Connector B
      *7 Service Wire - -
      *a

      Front view of wire harness connector

      (to Front Door Wire RH)

      		 *b

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)

    3. Turn the ignition switch to ON.

    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      H25-1 (BDR+) - Body ground Ignition switch ON Below 1 V
      H25-2 (BDR-) - Body ground Ignition switch ON Below 1 V

    5. Turn the ignition switch off.

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

    7. Using a service wire, connect terminals 1 (BDR+) and 2 (BDR-) of connector C.

      Note

      Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.

    8. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H25-1 (BDR+) - H25-2 (BDR-) Always Below 1 Ω

    9. Disconnect the service wire from connector C.

    10. Measure the resistance according to the value(s) in the table below.

      Standard Resistance
      Tester Connection Condition Specified Condition
      H25-1 (BDR+) - H25-2 (BDR-) Always 1 MΩ or higher
      H25-1 (BDR+) - Body ground Always 1 MΩ or higher
      H25-2 (BDR-) - Body ground Always 1 MΩ or higher

    OK

    REPLACE FRONT DOOR WIRE RH

    NG

    REPLACE NO. 2 FLOOR WIRE