DTC B1835-58: Short in Curtain Shield Squib LH Circuit; DTC B1836-58: Open in Curtain Shield Squib LH Circuit; DTC B1837-58: Short to GND in Curtain Shield Squib LH Circuit; DTC B1838-58: Short to B+ in Curtain Shield Squib LH Circuit [08/2015 - 08/2019]: Procedure

1. Turn the engine switch off.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
3. Disconnect the connectors from the curtain shield airbag LH.
4. Connect the black wire side of SST (resistance: 2.1 Ω) to connector C.
   WARNING:

   Never connect the tester to the curtain shield airbag LH (curtain shield squib LH) 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 
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 (Refer to DTC CHECK / CLEAR [08/2015 - 08/2019] ).
8. Turn the engine switch off.
9. Turn the engine switch on (IG), and wait for at least 60 seconds.
10. Check for DTCs (Refer to DTC CHECK / CLEAR [08/2015 - 08/2019] ).

    OK

    DTC B1835, B1836, B1837 or B1838 is not output.

    HINT: 

    Codes other than DTC B1835, B1836, B1837 and B1838 may be output at this time, but they are not related to this check.

    TEXT IN ILLUSTRATION
    
    

    *1	Curtain Shield Squib LH
    *2	Center Airbag Sensor
    *3	Connector C
    *4	SST
    *a	Front view of wire harness connector (to Curtain Shield Squib LH)

Result: 

OK 

REPLACE CURTAIN SHIELD AIRBAG ASSEMBLY LH 

(Refer to REMOVAL [08/2015 - ] )

Result: 

NG 

See step  2

1. 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 No. 2 floor wire connectors (on the curtain shield airbag LH side) are not damaged.

   OK

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

   TEXT IN ILLUSTRATION
   
   

   *1	Curtain Shield Squib LH
   *2	Center Airbag Sensor

Result: 

NG 

REPLACE NO. 2 FLOOR WIRE 

Result: 

OK 

See step  3

1. Disconnect the connectors from the center airbag sensor.

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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
   R7-1 (ICL+) - Body ground	Engine switch on (IG)	Below 1 V
   R7-2 (ICL-) - 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
   R7-1 (ICL+) - R7-2 (ICL-)	Always	Below 1 Ω

7. Release the activation prevention mechanism built into connector B (Refer to DIAGNOSIS SYSTEM [08/2015 - 08/2019] ).
8. Measure the resistance according to the value(s) in the table below.

   Standard Resistance

   Tester Connection	Condition	Specified Condition
   R7-1 (ICL+) - R7-2 (ICL-)	Always	1 MΩ or higher
   R7-1 (ICL+) - Body ground	Always	1 MΩ or higher
   R7-2 (ICL-) - Body ground	Always	1 MΩ or higher

   TEXT IN ILLUSTRATION
   
   

   *1	Curtain Shield Squib LH
   *2	No. 2 Floor Wire
   *3	Center Airbag Sensor
   *4	Connector C
   *a	Front view of wire harness connector (to Curtain Shield Squib LH)

Result: 

NG 

REPLACE NO. 2 FLOOR WIRE 

Result: 

OK 

See step  4

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

   Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002

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 (Refer to DTC CHECK / CLEAR [08/2015 - 08/2019] ).
5. Turn the engine switch off.
6. Turn the engine switch on (IG), and wait for at least 60 seconds.
7. Check for DTCs (Refer to DTC CHECK / CLEAR [08/2015 - 08/2019] ).

   OK

   DTC B1835, B1836, B1837 or B1838 is not output.

   HINT: 

   Codes other than DTC B1835, B1836, B1837 and B1838 may be output at this time, but they are not related to this check.

   TEXT IN ILLUSTRATION
   
   

   *1	Curtain Shield Squib LH
   *2	Center Airbag Sensor

Result: 

OK 

USE SIMULATION METHOD TO CHECK 

(Refer to DIAGNOSIS SYSTEM [08/2015 - 08/2019] )

Result: 

NG 

REPLACE CENTER AIRBAG SENSOR ASSEMBLY 

(Refer to REMOVAL [08/2015 - ] )