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Home >> Toyota >> 2018 >> Prius C One >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Diagnostic Codes (3 Of 3) & Symptom Tests >> Airbag System >> DTC B1830/57: Short in Curtain Shield Squib RH Circuit; DTC B1831/57: Open in Curtain Shield Squib RH Circuit; DTC B1832/57: Short to GND in Curtain Shield Squib RH Circuit; DTC B1833/57: Short to B+ in Curtain Shield Squib RH Circuit [06/2017 - ] >> Procedure

DTC B1830/57: Short in Curtain Shield Squib RH Circuit; DTC B1831/57: Open in Curtain Shield Squib RH Circuit; DTC B1832/57: Short to GND in Curtain Shield Squib RH Circuit; DTC B1833/57: Short to B+ in Curtain Shield Squib RH Circuit [06/2017 - ]: Procedure

  1. CHECK CONNECTORS 
    1. Turn the ignition switch off.
      GTY425806Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Curtain Shield Airbag Assembly RH
      *2 Airbag Sensor Assembly
      *3 Floor Wire
    2. Disconnect the cable from the negative (-) auxiliary battery terminal.
      WARNING:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

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

      OK

      The connectors are properly connected.

      HINT: 

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

    4. Disconnect the connectors from the curtain shield airbag assembly RH and airbag sensor assembly.
    5. Check that the terminals of the connectors are not deformed or damaged.

      OK

      The terminals are not deformed or damaged.

    6. Check that the floor wire connector (on the curtain shield airbag assembly RH side) is not loose, deformed or damaged.

      OK

      The connector locking button is not disengaged, and the claw of the lock is not deformed or damaged.

    7. Check that the short springs of the activation prevention mechanism of the floor wire connector are not deformed or damaged.

      OK

      The short springs are not deformed or damaged.

    Result: 

    NG 

    REPLACE FLOOR WIRE 

    Result: 

    OK 

    See step  2

  2. CHECK CURTAIN SHIELD AIRBAG ASSEMBLY RH (CURTAIN SHIELD SQUIB RH) 
    1. Connect the connector to the airbag sensor assembly.
      GTY744672Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Curtain Shield Airbag Assembly RH
      *2 Airbag Sensor Assembly
      *a Front view of wire harness connector
      (to Curtain Shield Airbag Assembly RH)
    2. Connect SST (resistance 2.1 Ω) to connector C.
      WARNING:

      Never connect the tester to the curtain shield airbag assembly RH (curtain shield squib RH) 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 it.
      • Insert SST straight into the terminals of the connector.
      • SST: 09843-18061 
    3. Connect the cable to the negative (-) auxiliary battery terminal.
    4. Clear the DTCs stored in memory (Refer to DTC CHECK / CLEAR [11/2015 - ] ).
    5. Turn the ignition switch off.
    6. Turn the ignition switch to ON (IG), and wait for at least 60 seconds.
    7. Check for DTCs (Refer to DTC CHECK / CLEAR [11/2015 - ] ).

      OK

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

      HINT: 

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

    8. Turn the ignition switch off.
    9. Disconnect the cable from the negative (-) auxiliary battery terminal.
      WARNING:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

    10. Disconnect SST from connector C.

    Result: 

    OK 

    REPLACE CURTAIN SHIELD AIRBAG ASSEMBLY RH 

    Refer to REMOVAL [06/2017 - ] )

    Result: 

    NG 

    See step  3

  3. CHECK FLOOR WIRE 
    1. Disconnect the floor wire from the airbag sensor assembly.
      GTY774281Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Curtain Shield Airbag Assembly RH
      *2 Airbag Sensor Assembly
      *3 Floor Wire
      *a Front view of wire harness connector
      (to Curtain Shield Airbag Assembly RH)
    2. Check for a short to B+ in the circuit.
      1. Connect the cable to the negative (-) auxiliary battery terminal.
      2. Turn the ignition switch to ON (IG).
      3. Measure the voltage according to the value(s) in the table below.

        Standard Voltage

        Tester Connection Condition Specified Condition
        M49-1 (ICR+) - Body ground Ignition switch ON (IG) Below 1 V
        M49-2 (ICR-) - Body ground Ignition switch ON (IG) Below 1 V
      4. Turn the ignition switch off.
      5. Disconnect the cable from the negative (-) auxiliary battery terminal.
        WARNING:

        Wait at least 90 seconds after disconnecting the cable from the negative (-) auxiliary battery terminal to disable the SRS system.

    3. Check for an open in the circuit.
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        M49-1 (ICR+) - M49-2 (ICR-) Always Below 1 Ω
    4. Check for a short to ground in the circuit.
      1. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        M49-1 (ICR+) - Body ground Always 1 MΩ or higher
        M49-2 (ICR-) - Body ground Always 1 MΩ or higher
    5. Check for a short in the circuit.
      1. Release the activation prevention mechanism built into connector B (Refer to DIAGNOSIS SYSTEM [06/2017 - ] ).
      2. Measure the resistance according to the value(s) in the table below.

        Standard Resistance

        Tester Connection Condition Specified Condition
        M49-1 (ICR+) - M49-2 (ICR-) Always 1 MΩ or higher
      3. Restore the released activation prevention mechanism of connector B to the original condition.

    Result: 

    NG 

    REPLACE FLOOR WIRE 

    Result: 

    OK 

    See step  4

  4. CHECK DTC 
    1. Connect the connectors to the curtain shield airbag assembly RH and airbag sensor assembly.
      GTY440123Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Curtain Shield Airbag Assembly RH
      *2 Airbag Sensor Assembly
    2. Connect the cable to the negative (-) auxiliary battery terminal.
    3. Clear the DTCs stored in memory (Refer to DTC CHECK / CLEAR [11/2015 - ] ).
    4. Turn the ignition switch off.
    5. Turn the ignition switch to ON (IG), and wait for at least 60 seconds.
    6. Check for DTCs (Refer to DTC CHECK / CLEAR [11/2015 - ] ).

      OK

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

      HINT: 

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

    Result: 

    OK 

    USE SIMULATION METHOD TO CHECK 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [11/2015 - ] )

    Result: 

    NG 

    REPLACE AIRBAG SENSOR ASSEMBLY 

    Refer to REMOVAL [11/2015 - ] )

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