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 [10/2014 - 05/2019]: Procedure

CHECK CURTAIN SHIELD AIRBAG ASSEMBLY RH

Turn the power switch off.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*1	Curtain Shield Airbag Assembly RH
*2	Airbag ECU Assembly
*3	Connector C
*4	SST
*a	Front view of wire harness connector (to Curtain Shield Airbag Assembly RH)

Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds.
Disconnect the connector from the curtain shield airbag assembly RH.
Connect the white wire side of SST (resistance: 2.1 Ω) to connector C.
WARNING:
Never connect the tester to the curtain shield airbag assembly 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.
- SST: 09843-18061
Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
Turn the power switch on (IG), and wait for at least 60 seconds.
Clear the DTCs.
Refer to DTC CHECK / CLEAR [10/2014 - 05/2019]

Body Electrical > SRS Airbag > Clear DTCs
Turn the power switch off.
Turn the power switch on (IG), and wait for at least 60 seconds.

Check for DTCs.

Refer to DTC CHECK / CLEAR [10/2014 - 05/2019]

Body Electrical > SRS Airbag > Trouble Codes

Result

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

HINT:

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

Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds.
Disconnect SST from connector C.

Result:

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

REPLACE CURTAIN SHIELD AIRBAG ASSEMBLY RH. Refer to REMOVAL [10/2014 - 09/2016] , or refer to REMOVAL [09/2016 - 05/2019]

Result:

DTC B1830/57, B1831/57, B1832/57 or B1833/57 is output

See step 2

CHECK CONNECTORS

Disconnect the connectors from the airbag ECU assembly.

Check that the connectors (on the airbag ECU assembly side and curtain shield airbag assembly RH side) are not damaged.

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

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*1	Curtain Shield Airbag Assembly RH
*2	Floor Wire
*3	Airbag ECU Assembly

Result

Proceed to
OK
NG

Result:

REPLACE FLOOR WIRE

Result:

See step 3

CHECK FLOOR WIRE

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

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*1	Curtain Shield Airbag Assembly RH
*2	Floor Wire
*3	Airbag ECU Assembly
*4	Connector C
*a	Front view of wire harness connector (to Curtain Shield Airbag Assembly RH)

Turn the power switch on (IG).

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

Standard Voltage

Tester Connection	Switch Condition	Specified Condition
P10-1 (ICR+) - Body ground	Power switch on (IG)	Below 1 V
P10-2 (ICR-) - Body ground	Power switch on (IG)	Below 1 V

Turn the power switch off.
Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 90 seconds.

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

Standard Resistance

Tester Connection	Condition	Specified Condition
P10-1 (ICR+) - P10-2 (ICR-)	Always	Below 1 Ω

Release the activation prevention mechanism built into connector B.
Refer to DIAGNOSIS SYSTEM [10/2014 - ]

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

Standard Resistance

Tester Connection	Condition	Specified Condition
P10-1 (ICR+) - P10-2 (ICR-)	Always	1 MΩ or higher

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

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

Standard Resistance

Tester Connection	Condition	Specified Condition
P10-1 (ICR+) - Body ground	Always	1 MΩ or higher
P10-2 (ICR-) - Body ground	Always	1 MΩ or higher

Result

Proceed to
OK
NG

Result:

REPLACE FLOOR WIRE

Result:

See step 4

CHECK DTC

Connect the connectors to the curtain shield airbag assembly RH and airbag ECU assembly.

*1	Curtain Shield Airbag Assembly RH
*2	Airbag ECU Assembly

Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
Turn the power switch on (IG), and wait for at least 60 seconds.
Clear the DTCs.
Refer to DTC CHECK / CLEAR [10/2014 - 05/2019]

Body Electrical > SRS Airbag > Clear DTCs
Turn the power switch off.
Turn the power switch on (IG), and wait for at least 60 seconds.

Check for DTCs.

Refer to DTC CHECK / CLEAR [10/2014 - 05/2019]

Body Electrical > SRS Airbag > Trouble Codes

Result

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

HINT:

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

Result:

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

USE SIMULATION METHOD TO CHECK. Refer to DIAGNOSIS SYSTEM [10/2014 - ]

Result:

DTC B1830/57, B1831/57, B1832/57 or B1833/57 is output

REPLACE AIRBAG ECU ASSEMBLY. Refer to REMOVAL [10/2014 - 05/2019]