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

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

DESCRIPTION

The curtain shield squib RH circuit consists of the center airbag sensor and curtain shield airbag RH.

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

These DTCs are stored when a malfunction is detected in the curtain shield squib RH circuit.

DTC No.

Detection Item

DTC Detection Condition

Trouble Area

Test Mode / Check Mode

B1830/57

Short in Curtain Shield Squib RH Circuit

One of the following conditions is met:

  • The center airbag sensor detects a line short circuit signal 5 times in the curtain shield squib RH circuit during the primary check.

  • A curtain shield squib RH malfunction.

  • A center airbag sensor malfunction.

  • Floor wire

  • Curtain shield airbag assembly RH (Curtain shield squib RH)

  • Center airbag sensor assembly

*2

B1831/57

Open in Curtain Shield Squib RH Circuit

One of the following conditions is met:

  • The center airbag sensor detects an open circuit signal in the curtain shield squib RH circuit for 2 seconds.

  • A curtain shield squib RH malfunction.

  • A center airbag sensor malfunction.

  • Floor wire

  • Curtain shield airbag assembly RH (Curtain shield squib RH)

  • Center airbag sensor assembly

*2

B1832/57

Short to GND in Curtain Shield Squib RH Circuit

One of the following conditions is met:

  • The center airbag sensor detects a short circuit to ground signal in the curtain shield squib RH circuit for 0.5 seconds.

  • A curtain shield squib RH malfunction.

  • A center airbag sensor malfunction.

  • Floor wire

  • Curtain shield airbag assembly RH (Curtain shield squib RH)

  • Center airbag sensor assembly

*2

B1833/57

Short to B+ in Curtain Shield Squib RH Circuit

One of the following conditions is met:

  • The center airbag sensor detects a short circuit to B+ signal in the curtain shield squib RH circuit for 0.5 seconds.

  • A curtain shield squib RH malfunction.

  • A center airbag sensor malfunction.

  • Floor wire

  • Curtain shield airbag assembly RH (Curtain shield squib RH)

  • Center airbag sensor assembly

*2

WIRING DIAGRAM

C253326E12

CAUTION / NOTICE / HINT

Note:

  • After turning the engine 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).

Tip:

To perform the simulation method, enter check mode (signal check) with the intelligent tester (Click here), and then wiggle each connector of the airbag system or drive the vehicle on various types of road (Click here).

PROCEDURE

  1. CHECK CURTAIN SHIELD AIRBAG RH (CURTAIN SHIELD SQUIB RH)

    1. C217719C03

      *1

      Curtain Shield Squib RH

      *2

      Center Airbag Sensor

      *3

      Connector C

      *4

      SST

      *a

      Front view of wire harness connector

      (to Curtain Shield Squib RH)

      Turn the engine switch off.

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

    3. Disconnect the connector from the curtain shield airbag RH.

    4. Connect the black wire side of SST (resistance: 2.1 Ω) to connector C.

      CAUTION:

      Never connect the tester to the curtain shield airbag 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 SST.

      • Insert SST straight into the terminals of the connector.

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

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

    7. Clear the DTCs.

      Click here

      Body Electrical > SRS Airbag > Clear DTCs

    8. Turn the engine switch off.

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

    10. Check for DTCs.

      Click here

      Body Electrical > SRS Airbag > Trouble Codes

      OK

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

      Tip:

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

      Result

      Result

      OK

      NG

    09843-18061

    OK

    REPLACE CURTAIN SHIELD AIRBAG ASSEMBLY RH

    Click here

    NG

  2. CHECK CONNECTOR

    1. C214775C04

      *1

      Curtain Shield Squib RH

      *2

      Center Airbag Sensor

      Turn the engine switch off.

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

    3. Disconnect SST from connector C.

    4. Check that the floor wire connector (on the front seat airbag RH side) is not damaged.

      OK

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

      Result

      Result

      OK

      NG
    NG

    REPLACE FLOOR WIRE

    OK

  3. CHECK FLOOR WIRE (CURTAIN SHIELD AIRBAG RH CIRCUIT)

    1. C216072C04

      *1

      Curtain Shield Squib RH

      *2

      Floor Wire

      *3

      Center Airbag Sensor

      *4

      Connector C

      *a

      Front view of wire harness connector

      (to Curtain Shield Squib RH)

      Disconnect the connectors from the center airbag sensor.

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

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

      Standard Voltage

      Tester Connection

      Switch Condition

      Specified Condition

      Q6-1 (ICR+) - Body ground

      Engine switch on (IG)

      Below 1 V

      Q6-2 (ICR-) - Body ground

      Engine switch on (IG)

      Below 1 V

    4. Turn the engine switch off.

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

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      Q6-1 (ICR+) - Q6-2 (ICR-)

      Always

      Below 1 Ω

    7. Release the activation prevention mechanism built into connector B.

      Click here

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

      Standard Resistance

      Tester Connection

      Condition

      Specified Condition

      Q6-1 (ICR+) - Q6-2 (ICR-)

      Always

      1 MΩ or higher

      Q6-1 (ICR+) - Body ground

      Always

      1 MΩ or higher

      Q6-2 (ICR-) - Body ground

      Always

      1 MΩ or higher

      Result

      Result

      OK

      NG
    NG

    REPLACE FLOOR WIRE

    OK

  4. CHECK CENTER AIRBAG SENSOR

    1. C146261C03

      *1

      Curtain Shield Squib RH

      *2

      Center Airbag Sensor

      Connect the connectors to the curtain shield airbag RH and center airbag sensor.

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

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

    4. Clear the DTCs.

      Click here

      Body Electrical > SRS Airbag > Clear DTCs

    5. Turn the engine switch off.

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

    7. Check for DTCs.

      Click here

      Body Electrical > SRS Airbag > Trouble Codes

      OK

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

      Tip:

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

      Result

      Result

      OK

      NG
    OK

    USE SIMULATION METHOD TO CHECK

    Click here

    NG

    REPLACE CENTER AIRBAG SENSOR ASSEMBLY

    Click here