DTC B1830: Short in Curtain Shield Airbag (RH) Squib Circuit; DTC B1831: Open in Curtain Shield Airbag (RH) Squib Circuit; DTC B1832: Short in Curtain Shield Airbag (RH) Squib Circuit (to Ground); DTC B1833: Short in Curtain Shield Airbag (RH) Squib Circuit (to +B) [08/2017 - 08/2019]: Procedure

CHECK CONNECTORS

Turn the ignition switch off.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*1	Curtain Shield Airbag Assembly RH
*2	Airbag Sensor Assembly
*3	No. 2 Floor Wire

Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
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.
Disconnect the connectors from the curtain shield airbag assembly RH and airbag sensor assembly.
Check that the terminals of the connectors are not deformed or damaged.
OK

The terminals are not deformed or damaged.

Check that the short springs of the activation prevention mechanism of the No. 2 floor wire connector are not deformed or damaged.

The short springs are not deformed or damaged.

Result

Proceed to
OK
NG

Result:

REPLACE NO. 2 FLOOR WIRE

Result:

See step 2

CHECK CURTAIN SHIELD AIRBAG ASSEMBLY RH

Connect the connector to the airbag sensor assembly.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*1	Curtain Shield Airbag Assembly RH
*2	Airbag Sensor Assembly
*3	SST
*a	Front view of wire harness connector (to 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 (-) battery terminal, and wait for at least 2 seconds.
Turn the ignition switch to ON, and wait for at least 60 seconds.
Clear the DTCs.
Refer to DTC CHECK / CLEAR [08/2017 - 08/2019]
Turn the ignition switch off.
Turn the ignition switch to ON, and wait for at least 60 seconds.

Check for DTCs.

Refer to DTC CHECK / CLEAR [08/2017 - 08/2019]

Result

Result	Proceed to
DTC B1830, B1831, B1832 or B1833 is not output	A
DTC B1830, B1831, B1832 or B1833 is output	B

HINT:

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

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

Result:

REPLACE CURTAIN SHIELD AIRBAG ASSEMBLY RH. Refer to REMOVAL [08/2015 - 08/2019]

Result:

See step 3

CHECK NO. 2 FLOOR WIRE

Disconnect the No. 2 floor wire from the airbag sensor assembly.

Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

*1	Curtain Shield Airbag Assembly RH
*2	Airbag Sensor Assembly
*3	No. 2 Floor Wire
*a	Front view of wire harness connector (to Curtain Shield Airbag Assembly RH)
	Release the activation prevention mechanism

Check for a short to B+ in the circuit.

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

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

Standard Voltage

Tester Connection	Switch Condition	Specified Condition
P2-2 (ICR+) - Body ground	Ignition switch ON	Below 1 V
P2-1 (ICR-) - Body ground	Ignition switch ON	Below 1 V

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

Check for an open in the circuit.

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

Standard Resistance

Tester Connection	Condition	Specified Condition
P2-2 (ICR+) - P2-1 (ICR-)	Always	Below 1 Ω

Check for a short to ground in the circuit.

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

Standard Resistance

Tester Connection	Condition	Specified Condition
P2-2 (ICR+) - Body ground	Always	1 MΩ or higher
P2-1 (ICR-) - Body ground	Always	1 MΩ or higher

Check for a short in the circuit.

Release the activation prevention mechanism built into connector B.
Refer to SYSTEM DESCRIPTION [08/2017 - ]

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

Standard Resistance

Tester Connection	Condition	Specified Condition
P2-2 (ICR+) - P2-1 (ICR-)	Always	1 MΩ or higher

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

Result

Proceed to
OK
NG

Result:

REPLACE NO. 2 FLOOR WIRE

Result:

See step 4

CHECK DTC

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

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

Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
Turn the ignition switch to ON, and wait for at least 60 seconds.
Clear the DTCs.
Refer to DTC CHECK / CLEAR [08/2017 - 08/2019]
Turn the ignition switch off.
Turn the ignition switch to ON, and wait for at least 60 seconds.

Check for DTCs.

Refer to DTC CHECK / CLEAR [08/2017 - 08/2019]

Result

Result	Proceed to
DTC B1830, B1831, B1832 or B1833 is not output	A
DTC B1830, B1831, B1832 or B1833 is output	B

HINT:

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

Result:

USE SIMULATION METHOD TO CHECK. Refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2017 - 08/2018] , or refer to HOW TO PROCEED WITH TROUBLESHOOTING [08/2018 - 08/2019]

Result:

REPLACE AIRBAG SENSOR ASSEMBLY. Refer to REMOVAL [08/2017 - 08/2019]