AIRBAG SYSTEM, Diagnostic DTC:B1830/57, B1831/57, B1832/57, B1833/57

DTC Code DTC Name
B1830/57 Short in Driver Side Curtain Shield Squib Circuit
B1831/57 Open in Driver Side Curtain Shield Squib Circuit
B1832/57 Short to GND in Driver Side Curtain Shield Squib Circuit
B1833/57 Short to B+ in Driver Side Curtain Shield Squib Circuit

DESCRIPTION

The driver side curtain shield squib circuit consists of the center airbag sensor assembly and the curtain shield airbag assembly (Driver side).

The circuit instructs the SRS to deploy when deployment conditions are met.

These DTCs are recorded when a malfunction is detected in the driver side curtain shield squib circuit.

DTC No. DTC Detection Condition Trouble Area
B1830/57

  • The center airbag sensor assembly receives a line short circuit signal 5 times in the driver side curtain shield squib circuit during primary check.

  • Driver side curtain shield squib malfunction

  • Center airbag sensor assembly malfunction

  • Floor wire No. 2 (for LHD)

  • Floor wire (for RHD)

  • Curtain shield airbag assembly (Driver side curtain shield squib)

  • Center airbag sensor assembly
B1831/57

  • The center airbag sensor assembly receives an open circuit signal in the driver side curtain shield squib circuit for 2 seconds.

  • Driver side curtain shield squib malfunction

  • Center airbag sensor assembly malfunction

  • Floor wire No. 2 (for LHD)

  • Floor wire (for RHD)

  • Curtain shield airbag assembly (Driver side curtain shield squib)

  • Center airbag sensor assembly
B1832/57

  • The center airbag sensor assembly receives a short circuit to ground signal in the driver side curtain shield squib circuit for 0.5 seconds.

  • Driver side curtain shield squib malfunction

  • Center airbag sensor assembly malfunction

  • Floor wire No. 2 (for LHD)

  • Floor wire (for RHD)

  • Curtain shield airbag assembly (Driver side curtain shield squib)

  • Center airbag sensor assembly
B1833/57

  • The center airbag sensor assembly receives a short circuit to B+ signal in the driver side curtain shield squib circuit for 0.5 seconds.

  • Driver side curtain shield squib malfunction

  • Center airbag sensor assembly malfunction

  • Floor wire No. 2 (for LHD)

  • Floor wire (for RHD)

  • Curtain shield airbag assembly (Driver side curtain shield squib)

  • Center airbag sensor assembly

WIRING DIAGRAM

A017D6AE04

INSPECTION PROCEDURE

Tech Tips


  • Perform the simulation method by selecting the "check mode" (signal check) with the intelligent tester Click here.

  • After selecting the "check mode" (signal check), perform the simulation method by wiggling each connector of the airbag system or driving the vehicle on a city or rough road Click here.

PROCEDURE


  1. CHECK CONNECTOR


    1. A017F1FE08

      Turn the ignition switch off.

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

    3. Check that the connectors are properly connected to the curtain shield airbag assembly (Driver side) and center airbag sensor assembly.

      OK
      The connectors are properly connected.

      Tech Tips

      If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection.

    4. Disconnect the connectors from the curtain shield airbag assembly (Driver side) and center airbag sensor assembly.

    5. Check that the connector terminals are not damaged.

      OK
      The terminals are not deformed or damaged.

    6. Check that the wire harness connector (on the curtain shield airbag assembly (Driver side)) is not damaged.

      OK
      The lock button is not disengaged, and the claw of the lock is not deformed or damaged.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE FLOOR WIRE NO. 2

    C

    REPLACE FLOOR WIRE

    A

  2. CHECK CURTAIN SHIELD AIRBAG ASSEMBLY (DRIVER SIDE CURTAIN SHIELD SQUIB)


    1. A017C0UE02

      Connect the connector to the center airbag sensor assembly.

    2. Connect SST (resistance 2.1 Ω) to connector C.

      CAUTION:

      Never connect the tester to the curtain shield airbag assembly (Driver side curtain shield squib) for measurement, as this may lead to a serious injury due to airbag deployment.

      Note


      • Do not forcibly insert SST into the terminals of the connector when connecting.

      • Insert SST straight into the terminals of the connector.

      SST
      09843-18061

    3. Connect the negative (-) terminal cable to the battery.

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

    8. Check for DTCs Click here.

      OK
      DTC B1830, B1831, B1832, B1833, or 57 is not output.

      Tech Tips

      Codes other than DTC B1830, B1831, B1832, B1833, and 57 may be output at this time, but they are not related to this check.


    NG

    CHECK WIRE HARNESS (DRIVER SIDE CURTAIN SHIELD SQUIB CIRCUIT) Click here

    OK

    REPLACE CURTAIN SHIELD AIRBAG ASSEMBLY (DRIVER SIDE)

  3. CHECK WIRE HARNESS (DRIVER SIDE CURTAIN SHIELD SQUIB CIRCUIT)


    1. A017DR9E05

      Turn the ignition switch off.

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

    3. Disconnect SST from connector C.

    4. Disconnect the connector from the center airbag sensor assembly.

    5. Check for a short to B+ in the circuit.


      1. Connect the negative (-) terminal cable to the battery.

      2. Turn the ignition switch on (IG).

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

        Standard voltage
        for LHD
        Tester Connection Switch Condition Specified Condition
        O11-1 (ICL+) - Body ground Ignition switch on (IG) Below 1 V
        O11-2 (ICL-) - Body ground Ignition switch on (IG) Below 1 V
        for RHD
        Tester Connection Switch Condition Specified Condition
        N8-1 (ICR+) - Body ground Ignition switch on (IG) Below 1 V
        N8-2 (ICR-) - Body ground Ignition switch on (IG) Below 1 V
        Result
        Result Proceed to
        OK A
        NG (for LHD) B
        NG (for RHD) C

    6. Check for an open in the circuit.


      1. Turn the ignition switch off.

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

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

        Standard resistance
        for LHD
        Tester Connection Switch Condition Specified Condition
        O11-1 (ICL+) - O11-2 (ICL-) Always Below 1 Ω
        for RHD
        Tester Connection Switch Condition Specified Condition
        N8-1 (ICR+) - N8-2 (ICR-) Always Below 1 Ω
        Result
        Result Proceed to
        OK A
        NG (for LHD) B
        NG (for RHD) C

    7. Check for a short to ground in the circuit.


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

        Standard resistance
        for LHD
        Tester Connection Switch Condition Specified Condition
        O11-1 (ICL+) - Body ground Always 1 MΩ or higher
        O11-2 (ICL-) - Body ground Always 1 MΩ or higher
        for RHD
        Tester Connection Switch Condition Specified Condition
        N8-1 (ICR+) - Body ground Always 1 MΩ or higher
        N8-2 (ICR-) - Body ground Always 1 MΩ or higher
        Result
        Result Proceed to
        OK A
        NG (for LHD) B
        NG (for RHD) C

    8. Check for a short in the circuit.


      1. Release the activation prevention mechanism built into connector B Click here.

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

        Standard resistance
        for LHD
        Tester Connection Switch Condition Specified Condition
        O11-1 (ICL+) - O11-2 (ICL-) Always 1 MΩ or higher
        for RHD
        Tester Connection Switch Condition Specified Condition
        N8-1 (ICR+) - N8-2 (ICR-) Always 1 MΩ or higher
        Result
        Result Proceed to
        OK A
        NG (for LHD) B
        NG (for RHD) C

    B

    REPLACE FLOOR WIRE NO. 2

    C

    REPLACE FLOOR WIRE

    A

  4. CHECK CENTER AIRBAG SENSOR ASSEMBLY


    1. A017F18E01

      Restore the released activation prevention mechanism of connector B to the original condition.

    2. Connect the connectors to the curtain shield airbag assembly (Driver side) and the center airbag sensor assembly.

    3. Connect the negative (-) terminal cable to the battery.

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

    8. Check for DTCs Click here.

      OK
      DTC B1830, B1831, B1832, B1833, or 57 is not output.

      Tech Tips

      Codes other than DTC B1830, B1831, B1832, B1833, and 57 may be output at this time, but they are not related to this check.


    NG

    REPLACE CENTER AIRBAG SENSOR ASSEMBLY Click here

    OK

    USE SIMULATION METHOD TO CHECK Click here