LEMON Manuals: Even more car manuals for everyone
Home >> Toyota >> 2019 >> Sequoia SR5, 4WD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Supplemental Restraint System - Diagnostic Codes (2 Of 3) >> Airbag System >> DTC B1692: Lost Communication with Side Airbag Sensor RH; DTC B1693: Side Airbag Sensor RH Initialization Incomplete; DTC B1697: Lost Communication with Side Airbag Sensor LH; DTC B1698: Side Airbag Sensor LH Initialization Incomplete [08/2017 - 08/2019] >> Procedure

DTC B1692: Lost Communication with Side Airbag Sensor RH; DTC B1693: Side Airbag Sensor RH Initialization Incomplete; DTC B1697: Lost Communication with Side Airbag Sensor LH; DTC B1698: Side Airbag Sensor LH Initialization Incomplete [08/2017 - 08/2019]: Procedure

  1. CHECK DTC 
    1. Turn the ignition switch to ON, and wait for at least 60 seconds.
    2. Clear the DTCs stored in memory.

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

    3. Turn the ignition switch off.

      HINT: 

      If a communication error occurs, DTCs for both the LH and RH sides will be stored simultaneously. The malfunctioning area can be identified by turning the ignition switch off and then ON again.

    4. Turn the ignition switch to ON, and wait for at least 60 seconds.
    5. Check for DTCs.

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

      Result

      Result Proceed to
      DTC B1692 or B1693 is output A
      DTC B1697 or B1698 is output B
      DTC B1692, B1693, B1697 and B1698 are not output C

      HINT: 

      Codes other than DTC B1692, B1693, B1697 and B1698 may be output at this time, but they are not related to this check.

    Result: 

    B 

    See step  12

    Result: 

    C 

    USE SIMULATION METHOD TO CHECK.  Refer to

    HOW TO PROCEED WITH TROUBLESHOOTING [08/2017 - 08/2018]

    HOW TO PROCEED WITH TROUBLESHOOTING [08/2018 - 08/2019]

    Result: 

    A 

    See step  2

  2. CHECK CONNECTION OF CONNECTORS 
    1. Turn the ignition switch off.
    2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    3. Check that the connectors are properly connected to the airbag sensor assembly and side airbag sensor assembly RH.

      OK

      The connectors are properly connected.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CONNECT CONNECTORS PROPERLY 

    Result: 

    OK 

    See step  3

  3. CHECK CONNECTORS 
    1. Disconnect the connectors from the airbag sensor assembly and side airbag sensor assembly RH.
      GTY743874Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Side Airbag Sensor Assembly RH
      *2 Airbag Sensor Assembly
      *3 Front Door Wire RH
      *4 No. 2 Floor Wire
    2. Check that the connectors (on the airbag sensor assembly side and side airbag sensor assembly RH side) are not damaged.

      OK

      The connectors are not deformed or damaged.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE NO. 2 FLOOR WIRE OR FRONT DOOR WIRE RH 

    Result: 

    OK 

    See step  4

  4. CHECK SIDE AIRBAG SENSOR ASSEMBLY RH CIRCUIT 
    1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
      GTY772077Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Side Airbag Sensor Assembly RH
      *2 Airbag Sensor Assembly
      *3 Front Door Wire RH
      *4 No. 2 Floor Wire
      *5 Service Wire
      *a Front view of wire harness connector
      (to Side Airbag Sensor Assembly RH)
      *b Front view of wire harness connector
      (to Airbag Sensor Assembly)
    2. Turn the ignition switch to ON.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      L10-4 (BBR+) - Body ground Ignition switch ON Below 1 V
      L10-3 (BBR-) - Body ground Ignition switch ON Below 1 V
    4. Turn the ignition switch off.
    5. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    6. Using a service wire, connect terminals 25 (BBR+) and 26 (BBR-) of connector B.
      NOTE:

      Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      L10-4 (BBR+) - L10-3 (BBR-) Always Below 1 Ω
    8. Disconnect the service wire from connector B.
    9. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      L10-4 (BBR+) - L10-3 (BBR-) Always 1 MΩ or higher
      L10-4 (BBR+) - Body ground Always 1 MΩ or higher
      L10-3 (BBR-) - Body ground Always 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  10

    Result: 

    OK 

    See step  5

  5. CHECK SIDE AIRBAG SENSOR ASSEMBLY RH 
    1. Connect the connectors to the airbag sensor assembly.
      GTY773793Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Side Airbag Sensor Assembly LH
      *2 Airbag Sensor Assembly
    2. Interchange the side airbag sensor assembly RH with LH and connect the connectors to them.
    3. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
    4. Turn the ignition switch to ON, and wait for at least 60 seconds.
    5. Clear the DTCs stored in memory.

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

    6. Turn the ignition switch off.
    7. Turn the ignition switch to ON, and wait for at least 60 seconds.
    8. Check for DTCs.

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

      Result

      Result Proceed to
      DTC B1692 or B1693 is output A
      DTC B1697 or B1698 is output B
      DTC B1692, B1693, B1697 and B1698 are not output C

      HINT: 

      Codes other than DTC B1692, B1693, B1697 and B1698 may be output at this time, but they are not related to this check.

    9. Turn the ignition switch off.
    10. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    11. Return the side airbag sensor assembly LH and RH to their original positions and connect the connectors to them.

    Result: 

    B 

    REPLACE SIDE AIRBAG SENSOR ASSEMBLY RH. Refer to  REMOVAL [08/2015 - 08/2019] 

    Result: 

    C 

    USE SIMULATION METHOD TO CHECK.  Refer to

    HOW TO PROCEED WITH TROUBLESHOOTING [08/2017 - 08/2018]

    HOW TO PROCEED WITH TROUBLESHOOTING [08/2018 - 08/2019]

    Result: 

    A 

    See step  6

  6. CHECK CONNECTION OF CONNECTOR 
    1. Check that the connector is properly connected to the rear airbag sensor RH.

      OK

      The connector is properly connected.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CONNECT CONNECTOR PROPERLY 

    Result: 

    OK 

    See step  7

  7. CHECK CONNECTOR 
    1. Disconnect the connectors from the rear airbag sensor RH and side airbag sensor assembly RH.
    2. Check that the connector (on the rear airbag sensor RH side) is not damaged.
      GTY516344Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Rear Airbag Sensor RH
      *2 Side Airbag Sensor Assembly RH
      *3 Front Door Wire RH
      *4 No. 2 Floor Wire

      OK

      The connector is not deformed or damaged.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE FRONT DOOR WIRE RH 

    Result: 

    OK 

    See step  8

  8. CHECK REAR AIRBAG SENSOR RH CIRCUIT 
    1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
      GTY765637Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Rear Airbag Sensor RH
      *2 Side Airbag Sensor Assembly RH
      *3 Front Door Wire RH
      *4 No. 2 Floor Wire
      *5 Service Wire
      *a Front view of wire harness connector
      (to Rear Airbag Sensor RH)
      *b Front view of wire harness connector
      (to Side Airbag Sensor Assembly RH)
    2. Turn the ignition switch to ON.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      P32-2 (BCR+) - Body ground Ignition switch ON Below 1 V
      P32-1 (BCR-) - Body ground Ignition switch ON Below 1 V
    4. Turn the ignition switch off.
    5. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    6. Using a service wire, connect terminals 1 (BBR+) and 2 (BBR-) of connector B.
      NOTE:

      Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      P32-2 (BCR+) - P32-1 (BCR-) Always Below 1 Ω
    8. Disconnect the service wire from connector B.
    9. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      P32-2 (BCR+) - P32-1 (BCR-) Always 1 MΩ or higher
      P32-2 (BCR+) - Body ground Always 1 MΩ or higher
      P32-1 (BCR-) - Body ground Always 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  11

    Result: 

    OK 

    See step  9

  9. CHECK REAR AIRBAG SENSOR RH 
    1. Connect the connectors to the side airbag sensor assembly RH.
      GTY747930Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Rear Airbag Sensor LH
      *2 Side Airbag Sensor Assembly RH
    2. Interchange the rear airbag sensor RH with LH and connect the connectors to them.
    3. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
    4. Turn the ignition switch to ON, and wait for at least 60 seconds.
    5. Clear the DTCs.

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

    6. Turn the ignition switch off.
    7. Turn the ignition switch to ON, and wait for at least 60 seconds.
    8. Check for DTCs.

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

      Result

      Result Proceed to
      DTC B1692 or B1693 is output A
      DTC B1697 or B1698 is output B
      DTC B1692, B1693, B1697 and B1698 are not output C

      HINT: 

      Codes other than DTC B1692, B1693, B1697 and B1698 may be output at this time, but they are not related to this check.

    9. Turn the ignition switch off.
    10. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    11. Return the rear airbag sensor LH and RH to their original positions and connect the connectors to them.

    Result: 

    A 

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

    Result: 

    B 

    REPLACE REAR AIRBAG SENSOR RH. Refer to  REMOVAL [08/2015 - 08/2019] 

    Result: 

    C 

    USE SIMULATION METHOD TO CHECK.  Refer to

    HOW TO PROCEED WITH TROUBLESHOOTING [08/2017 - 08/2018]

    HOW TO PROCEED WITH TROUBLESHOOTING [08/2018 - 08/2019]

  10. CHECK NO. 2 FLOOR WIRE 
    1. Disconnect the No. 2 floor wire connector from the front door wire RH.
      GTY759640Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Side Airbag Sensor Assembly RH
      *2 Airbag Sensor Assembly
      *3 Front Door Wire RH
      *4 No. 2 Floor Wire
      *5 Service Wire
      *a Front view of wire harness connector
      (to Front Door Wire RH)
      *b Front view of wire harness connector
      (to Airbag Sensor Assembly)
    2. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
    3. Turn the ignition switch to ON.
    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      LP1-4 (BBR+) - Body ground Ignition switch ON Below 1 V
      LP1-3 (BBR-) - Body ground Ignition switch ON Below 1 V
    5. Turn the ignition switch off.
    6. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    7. Using a service wire, connect terminals 25 (BBR+) and 26 (BBR-) of connector B.
      NOTE:

      Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      LP1-4 (BBR+) - LP1-3 (BBR-) Always Below 1 Ω
    9. Disconnect the service wire from connector B.
    10. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      LP1-4 (BBR+) - LP1-3 (BBR-) Always 1 MΩ or higher
      LP1-4 (BBR+) - Body ground Always 1 MΩ or higher
      LP1-3 (BBR-) - Body ground Always 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE FRONT DOOR WIRE RH 

    Result: 

    NG 

    REPLACE NO. 2 FLOOR WIRE 

  11. CHECK NO. 2 FLOOR WIRE 
    1. Disconnect the No. 2 floor wire connector from the front door wire RH.
      GTY743706Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Rear Airbag Sensor RH
      *2 Side Airbag Sensor Assembly RH
      *3 Front Door Wire RH
      *4 No. 2 Floor Wire
      *5 Service Wire
      *a Front view of wire harness connector
      (to Front Door Wire RH)
      *b Front view of wire harness connector
      (to Side Airbag Sensor Assembly RH)
    2. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
    3. Turn the ignition switch to ON.
    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      LP1-2 (BCR+) - Body ground Ignition switch ON Below 1 V
      LP1-1 (BCR-) - Body ground Ignition switch ON Below 1 V
    5. Turn the ignition switch off.
    6. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    7. Using a service wire, connect terminals 1 (BCR+) and 2 (BCR-) of connector B.
      NOTE:

      Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      LP1-2 (BCR+) - LP1-1 (BCR-) Always Below 1 Ω
    9. Disconnect the service wire from connector B.
    10. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      LP1-2 (BCR+) - LP1-1 (BCR-) Always 1 MΩ or higher
      LP1-2 (BCR+) - Body ground Always 1 MΩ or higher
      LP1-1 (BCR-) - Body ground Always 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE FRONT DOOR WIRE RH 

    Result: 

    NG 

    REPLACE NO. 2 FLOOR WIRE 

  12. CHECK CONNECTION OF CONNECTORS 
    1. Turn the ignition switch off.
    2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    3. Check that the connectors are properly connected to the airbag sensor assembly and side airbag sensor assembly LH.

      OK

      The connectors are properly connected.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CONNECT CONNECTORS PROPERLY 

    Result: 

    OK 

    See step  13

  13. CHECK CONNECTORS 
    1. Disconnect the connectors from the airbag sensor assembly and side airbag sensor assembly LH.
      GTY770388Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Side Airbag Sensor Assembly LH
      *2 Airbag Sensor Assembly
      *3 Front Door Wire LH
      *4 Floor Wire
    2. Check that the connectors (on the airbag sensor assembly side and side airbag sensor assembly LH side) are not damaged.

      OK

      The connectors are not deformed or damaged.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE FLOOR WIRE OR FRONT DOOR WIRE LH 

    Result: 

    OK 

    See step  14

  14. CHECK SIDE AIRBAG SENSOR ASSEMBLY LH CIRCUIT 
    1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
      GTY754153Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Side Airbag Sensor Assembly LH
      *2 Airbag Sensor Assembly
      *3 Front Door Wire LH
      *4 Floor Wire
      *5 Service Wire
      *a Front view of wire harness connector
      (to Side Airbag Sensor Assembly LH)
      *b Front view of wire harness connector
      (to Airbag Sensor Assembly)
    2. Turn the ignition switch to ON.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      M12-4 (BBL+) - Body ground Ignition switch ON Below 1 V
      M12-3 (BBL-) - Body ground Ignition switch ON Below 1 V
    4. Turn the ignition switch off.
    5. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    6. Using a service wire, connect terminals 32 (BBL+) and 31 (BBL-) of connector B.
      NOTE:

      Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      M12-4 (BBL+) - M12-3 (BBL-) Always Below 1 Ω
    8. Disconnect the service wire from connector B.
    9. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      M12-4 (BBL+) - M12-3 (BBL-) Always 1 MΩ or higher
      M12-4 (BBL+) - Body ground Always 1 MΩ or higher
      M12-3 (BBL-) - Body ground Always 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  16

    Result: 

    OK 

    See step  15

  15. CHECK SIDE AIRBAG SENSOR ASSEMBLY LH 
    1. Connect the connectors to the airbag sensor assembly.
      GTY761935Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Side Airbag Sensor Assembly RH
      *2 Airbag Sensor Assembly
    2. Interchange the side airbag sensor assembly LH with RH and connect the connectors to them.
    3. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
    4. Turn the ignition switch to ON, and wait for at least 60 seconds.
    5. Clear the DTCs stored in memory.

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

    6. Turn the ignition switch off.
    7. Turn the ignition switch to ON, and wait for at least 60 seconds.
    8. Check for DTCs.

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

      Result

      Result Proceed to
      DTC B1692 or B1693 is output A
      DTC B1697 or B1698 is output B
      DTC B1692, B1693, B1697 and B1698 are not output C

      HINT: 

      Codes other than DTC B1692, B1693, B1697 and B1698 may be output at this time, but they are not related to this check.

    9. Turn the ignition switch off.
    10. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    11. Return the side airbag sensor assembly RH and LH to their original positions and connect the connectors to them.

    Result: 

    A 

    REPLACE SIDE AIRBAG SENSOR ASSEMBLY LH. Refer to  REMOVAL [08/2015 - 08/2019] 

    Result: 

    B 

    See step  17

    Result: 

    C 

    USE SIMULATION METHOD TO CHECK.  Refer to

    HOW TO PROCEED WITH TROUBLESHOOTING [08/2017 - 08/2018]

    HOW TO PROCEED WITH TROUBLESHOOTING [08/2018 - 08/2019]

  16. CHECK FLOOR WIRE 
    1. Disconnect the floor wire connector from the front door wire LH.
      GTY758551Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Side Airbag Sensor Assembly LH
      *2 Airbag Sensor Assembly
      *3 Front Door Wire LH
      *4 Floor Wire
      *5 Service Wire
      *a Front view of wire harness connector
      (to Front Door Wire LH)
      *b Front view of wire harness connector
      (to Airbag Sensor Assembly)
    2. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
    3. Turn the ignition switch to ON.
    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      MO1-4 (BBL+) - Body ground Ignition switch ON Below 1 V
      MO1-3 (BBL-) - Body ground Ignition switch ON Below 1 V
    5. Turn the ignition switch off.
    6. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    7. Using a service wire, connect terminals 32 (BBL+) and 31 (BBL-) of connector B.
      NOTE:

      Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      MO1-4 (BBL+) - MO1-3 (BBL-) Always Below 1 Ω
    9. Disconnect the service wire from connector B.
    10. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      MO1-4 (BBL+) - MO1-3 (BBL-) Always 1 MΩ or higher
      MO1-4 (BBL+) - Body ground Always 1 MΩ or higher
      MO1-3 (BBL-) - Body ground Always 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE FRONT DOOR WIRE LH 

    Result: 

    NG 

    REPLACE FLOOR WIRE 

  17. CHECK CONNECTION OF CONNECTOR 
    1. Check that the connector is properly connected to the rear airbag sensor LH.

      OK

      The connector is properly connected.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CONNECT CONNECTOR PROPERLY 

    Result: 

    OK 

    See step  18

  18. CHECK CONNECTOR 
    1. Disconnect the connectors from the rear airbag sensor LH and side airbag sensor assembly LH.
    2. Check that the connector (on the rear airbag sensor LH side) is not damaged.
      GTY516347Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Rear Airbag Sensor LH
      *2 Side Airbag Sensor Assembly LH
      *3 Front Door Wire LH
      *4 Floor Wire

      OK

      The connector is not deformed or damaged.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE FRONT DOOR WIRE LH 

    Result: 

    OK 

    See step  19

  19. CHECK REAR AIRBAG SENSOR LH CIRCUIT 
    1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
      GTY765636Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Rear Airbag Sensor LH
      *2 Side Airbag Sensor Assembly LH
      *3 Front Door Wire LH
      *4 Floor Wire
      *5 Service Wire
      *a Front view of wire harness connector
      (to Rear Airbag Sensor LH)
      *b Front view of wire harness connector
      (to Side Airbag Sensor Assembly LH)
    2. Turn the ignition switch to ON.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      O52-2 (BCL+) - Body ground Ignition switch ON Below 1 V
      O52-1 (BCL-) - Body ground Ignition switch ON Below 1 V
    4. Turn the ignition switch off.
    5. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    6. Using a service wire, connect terminals 1 (BCL+) and 2 (BCL-) of connector B.
      NOTE:

      Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      O52-2 (BCL+) - O52-1 (BCL-) Always Below 1 Ω
    8. Disconnect the service wire from connector B.
    9. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      O52-2 (BCL+) - O52-1 (BCL-) Always 1 MΩ or higher
      O52-2 (BCL+) - Body ground Always 1 MΩ or higher
      O52-1 (BCL-) - Body ground Always 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  21

    Result: 

    OK 

    See step  20

  20. CHECK REAR AIRBAG SENSOR LH 
    1. Connect the connectors to the side airbag sensor assembly LH.
      GTY747930Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Rear Airbag Sensor RH
      *2 Side Airbag Sensor Assembly LH
    2. Interchange the rear airbag sensor LH with RH and connect the connectors to them.
    3. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
    4. Turn the ignition switch to ON, and wait for at least 60 seconds.
    5. Clear the DTCs.

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

    6. Turn the ignition switch off.
    7. Turn the ignition switch to ON, and wait for at least 60 seconds.
    8. Check for DTCs.

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

      Result

      Result Proceed to
      DTC B1692 or B1693 is output A
      DTC B1697 or B1698 is output B
      DTC B1692, B1693, B1697 and B1698 are not output C

      HINT: 

      Codes other than DTC B1692, B1693, B1697 and B1698 may be output at this time, but they are not related to this check.

    9. Turn the ignition switch off.
    10. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    11. Return the rear airbag sensor RH and LH to their original positions and connect the connectors to them.

    Result: 

    A 

    REPLACE REAR AIRBAG SENSOR LH. Refer to  REMOVAL [08/2015 - 08/2019] 

    Result: 

    B 

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

    Result: 

    C 

    USE SIMULATION METHOD TO CHECK.  Refer to

    HOW TO PROCEED WITH TROUBLESHOOTING [08/2017 - 08/2018]

    HOW TO PROCEED WITH TROUBLESHOOTING [08/2018 - 08/2019]

  21. CHECK FLOOR WIRE 
    1. Disconnect the floor wire connector from the front door wire LH.
      GTY743707Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Rear Airbag Sensor LH
      *2 Side Airbag Sensor Assembly LH
      *3 Front Door Wire LH
      *4 Floor Wire
      *5 Service Wire
      *a Front view of wire harness connector
      (to Front Door Wire LH)
      *b Front view of wire harness connector
      (to Side Airbag Sensor Assembly LH)
    2. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
    3. Turn the ignition switch to ON.
    4. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      MO1-2 (BCL+) - Body ground Ignition switch ON Below 1 V
      MO1-1 (BCL-) - Body ground Ignition switch ON Below 1 V
    5. Turn the ignition switch off.
    6. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    7. Using a service wire, connect terminals 1 (BCL+) and 2 (BCL-) of connector B.
      NOTE:

      Do not forcibly insert the service wire into the terminals of the connector when connecting a service wire.

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      MO1-2 (BCL+) - MO1-1 (BCL-) Always Below 1 Ω
    9. Disconnect the service wire from connector B.
    10. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      MO1-2 (BCL+) - MO1-1 (BCL-) Always 1 MΩ or higher
      MO1-2 (BCL+) - Body ground Always 1 MΩ or higher
      MO1-1 (BCL-) - Body ground Always 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE FRONT DOOR WIRE LH 

    Result: 

    NG 

    REPLACE FLOOR WIRE 

scientia non olet · About LEMON Manuals