Dtc B1830/57 Short In Driver Side Curtain Shield Squib Circuit


DESCRIPTION

WIRING DIAGRAM

INSPECTION PROCEDURE

CHECK CURTAIN SHIELD AIRBAG ASSEMBLY RH (CURTAIN SHIELD SQUIB RH)

CHECK CONNECTOR

CHECK FLOOR WIRE (CURTAIN SHIELD SQUIB RH CIRCUIT)

CHECK CENTER AIRBAG SENSOR ASSEMBLY

DTC B1830/57 Short in Driver Side Curtain Shield Squib Circuit

DTC B1831/57 Open in Driver Side Curtain Shield Squib Circuit

DTC B1832/57 Short to GND in Driver Side Curtain Shield Squib Circuit

DTC 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 and the driver side curtain shield airbag.
The circuit instructs the SRS to deploy when the deployment conditions are met.
These DTCs are recorded when a malfunction is detected in the driver side curtain shield squib circuit.

DTC Code
Detection Condition
Trouble Area
B1830/57
When all conditions below are met:
  1. The center airbag sensor receives a line short circuit signal 5 times in the driver side curtain shield squib circuit during primary check.
  2. Driver side curtain shield squib malfunction
  3. Center airbag sensor malfunction
  1. Floor wire
  2. Curtain shield airbag assembly RH
  3. Center airbag sensor assembly
B1831/57
When all conditions below are met:
  1. The center airbag sensor receives an open circuit signal in the driver side curtain shield squib circuit for 2 seconds.
  2. Driver side curtain shield squib malfunction
  3. Center airbag sensor malfunction
  1. Floor wire
  2. Curtain shield airbag assembly RH
  3. Center airbag sensor assembly
B1832/57
When all conditions below are met:
  1. The center airbag sensor receives a short circuit to ground signal in the driver side curtain shield squib circuit for 0.5 seconds.
  2. Driver side curtain shield squib malfunction
  3. Center airbag sensor malfunction
  1. Floor wire
  2. Curtain shield airbag assembly RH
  3. Center airbag sensor assembly
B1833/57
When all conditions below are met:
  1. The center airbag sensor receives a short circuit to B+ signal in the driver side curtain shield squib circuit for 0.5 seconds.
  2. Driver side curtain shield squib malfunction
  3. Center airbag sensor malfunction
  1. Floor wire
  2. Curtain shield airbag assembly RH
  3. Center airbag sensor assembly

WIRING DIAGRAM


Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Supplemental Restraint System.Airbag System. Dtc B1830/57 Short In Driver Side Curtain Shield Squib Circuit


INSPECTION PROCEDURE

1.CHECK CURTAIN SHIELD AIRBAG ASSEMBLY RH (CURTAIN SHIELD SQUIB RH)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Supplemental Restraint System.Airbag System. Dtc B1830/57 Short In Driver Side Curtain Shield Squib Circuit

  1. Turn the ignition switch OFF.

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

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

  1. Connect the white 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.
    NOTICE:
    1. Do not forcibly insert SST into the terminals of the connector when connecting SST.
    2. Insert SST straight into the terminals of the connector.
SST
09843-18061

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

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

  1. Clear the DTCs (Toyota Fortuner RM000000YVY008X.html).

  1. Turn the ignition switch OFF.

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

  1. Check for DTCs (Toyota Fortuner RM000000YVY008X.html).

    OK:
    DTC B1830, B1831, B1832 or B1833 is not output.
    HINT:
    Codes other than DTC B1830, B1831, B1832 or B1833 may be output at this time, but they are not related to this check.


NG
Go to step 2
OK

REPLACE CURTAIN SHIELD AIRBAG ASSEMBLY RH

2.CHECK CONNECTOR

  1. Turn the ignition switch OFF.

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

  1. Disconnect SST from connector C.

  1. Check that the No. 2 floor wire connector (on the curtain shield airbag RH side) is not damaged.

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


NG
REPLACE FLOOR WIRE
OK


3.CHECK FLOOR WIRE (CURTAIN SHIELD SQUIB RH CIRCUIT)
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Supplemental Restraint System.Airbag System. Dtc B1830/57 Short In Driver Side Curtain Shield Squib Circuit

  1. Disconnect the connectors from the center airbag sensor.

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

  1. Turn the ignition switch ON.

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

    Standard Voltage:
    Tester Connection
    		Switch Condition
    		Specified Condition
    C23-2 (ICR-) - Body ground
    		Ignition switch ON
    		Below 1 V
    C23-1 (ICR+) - Body ground

  1. Turn the ignition switch OFF.

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

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    C23-2 (ICR-) - C23-1 (ICR+)
    		Always
    		Below 1 Ω

  1. Release the activation prevention mechanism built into connector B (Toyota Fortuner RM000000XFD0EGX.html).

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

    Standard Resistance:
    Tester Connection
    		Condition
    		Specified Condition
    C23-2 (ICR-) - C23-1 (ICR+)
    		Always
    		1 MΩ or higher
    C23-2 (ICR-) - Body ground
    C23-1 (ICR+) - Body ground


NG
REPLACE FLOOR WIRE
OK


4.CHECK CENTER AIRBAG SENSOR ASSEMBLY
Toyota Fortuner. Ggn50, 60 Kun51, 61 Tgn51 Lan50.Supplemental Restraint System.Airbag System. Dtc B1830/57 Short In Driver Side Curtain Shield Squib Circuit

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

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

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

  1. Clear the DTCs (Toyota Fortuner RM000000YVY008X.html).

  1. Turn the ignition switch OFF.

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

  1. Check for DTCs (Toyota Fortuner RM000000YVY008X.html).

    OK:
    DTC B1830, B1831, B1832 or B1833 is not output
    HINT:
    Codes other than DTC B1830, B1831, B1832 or B1833 may be output at this time, but they are not related to this check.


NG
REPLACE CENTER AIRBAG SENSOR ASSEMBLY
OK

USE SIMULATION METHOD TO CHECK