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Home >> Toyota >> 2025 >> Corolla LE >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System (Mid 2023-25) - Diagnostic Codes (5 Of 6) >> Airbag System >> DTC B00B5-00: Driver Seat Track Position Restraints Sensor Circuit Undetermined Failure [11/2022 - ] >> Procedure

DTC B00B5-00: Driver Seat Track Position Restraints Sensor Circuit Undetermined Failure [11/2022 - ]: Procedure

  1. CHECK VEHICLE CONDITION 
    1. Choose the model to be inspected.

      Result

      Result Proceed to
      for TMC Made Manual Seat A
      for TMC Made Power Seat B
      for TMMMS Made Manual Seat C
      for TMMMS Made Power Seat D

    Result: 

    B 

    See step  19

    Result: 

    C 

    See step  39

    Result: 

    D 

    See step  56

    Result: 

    A 

    See step  2

  2. CHECK CONNECTION OF CONNECTORS 

    Pre-procedure1

    1. Turn the ignition switch off.
    2. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.

      Procedure1

    3. Check that the connectors are properly connected to the airbag sensor assembly and seat position sensor (front seat adjuster assembly LH).

      OK

      The connectors are properly connected.

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    NG 

    CONNECT CONNECTORS PROPERLY 

    Result: 

    OK 

    See step  3

  3. CHECK CONNECTORS 

    Pre-procedure1

    1. Disconnect the airbag sensor assembly connector.
      GTY1113114Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness
    2. Disconnect the seat position sensor connector.

      Procedure1

    3. Check that the terminals of the connectors are not deformed or damaged.

      OK

      The terminals are not deformed or damaged.

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    NG 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH OR REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  4

  4. INSPECT SEAT POSITION SENSOR (FRONT SEAT ADJUSTER ASSEMBLY LH) 

    Pre-procedure1

    1. Remove the seat position sensor (front seat adjuster assembly LH).

      Refer to REMOVAL [11/2022 - ]

      Procedure1

    2. Inspect the seat position sensor.
      1. Remove and reinsert the metal plate under the bottom face of the seat position sensor and measure the current value.
        GTY1112438Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 Seat Position Sensor *2 Auxiliary battery
        *a Component without harness connected
        (Seat Position Sensor (Front Seat Adjuster Assembly LH))        		 *b Tester
        *c Metal plate *d Bottom Face

        Standard Current

        Tester Connection Condition Specified Condition
        Tester positive (+) - 1
        Tester negative (-) - Auxiliary battery negative (-)        		 Metal plate inserted 4.7 to 7.3 mA
        Metal plate not inserted 11.4 to 17.9 mA

        Result

        Proceed to
        OK
        NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE SEAT POSITION SENSOR (FRONT SEAT ADJUSTER ASSEMBLY LH) 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    OK 

    See step  5

  5. CHECK SEAT POSITION SENSOR CIRCUIT (CHECK FOR OPEN IN THE CIRCUIT) 

    Pre-procedure1

    1. Using a service wire, connect terminals 27 (LSP+) and 24 (GNDL) of connector B.
      NOTE:

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

      GTY1114956Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness
      *5 Service Wire
      *a Front view of wire harness connector
      (to Seat Position Sensor (Front Seat Adjuster Assembly LH))
      *b Front view of wire harness connector
      (to Airbag Sensor Assembly)

      Procedure1

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      z20-1 (GND) - z20-2 (VS) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. Disconnect the service wire from connector B.

    Result: 

    NG 

    See step  16

    Result: 

    OK 

    See step  6

  6. CHECK SEAT POSITION SENSOR CIRCUIT (CHECK FOR SHORT TO GROUND IN THE CIRCUIT) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      z20-1 (GND) - Body ground Always 1 MΩ or higher
      z20-2 (VS) - Body ground Always 1 MΩ or higher
      GTY1117234Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness
      *a Front view of wire harness connector
      (to Seat Position Sensor (Front Seat Adjuster Assembly LH))

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  13

    Result: 

    OK 

    See step  7

  7. CHECK SEAT POSITION SENSOR CIRCUIT (CHECK FOR SHORT TO +B IN THE CIRCUIT) 

    Pre-procedure1

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

      Procedure1

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

      Standard Voltage

      Tester Connection Condition Specified Condition
      z20-1 (GND) - Body ground Ignition switch ON Below 1 V
      z20-2 (VS) - Body ground Ignition switch ON Below 1 V

      Result

      Proceed to
      OK
      NG
      GTY1117234Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness
      *a Front view of wire harness connector
      (to Seat Position Sensor (Front Seat Adjuster Assembly LH))

      Post-procedure1

    4. Turn the ignition switch off.
    5. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.

    Result: 

    NG 

    See step  10

    Result: 

    OK 

    See step  8

  8. CLEAR DTC 

    Pre-procedure1

    1. Connect the airbag sensor assembly connector.
      GTY1103261Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness
    2. Connect the seat position sensor (front seat adjuster assembly LH) connector.
    3. Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
    4. Turn the ignition switch to ON, and wait for at least 60 seconds.

      Procedure1

    5. Clear the DTCs stored in memory.

      Body Electrical > SRS Airbag > Clear DTCs 

      Result

      Proceed to
      NEXT

      Post-procedure1

    6. Turn the ignition switch off.

    Result: 

    NEXT 

    See step  9

  9. CHECK DTC 

    Pre-procedure1

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

      Procedure1

    2. Check for DTCs.

      Body Electrical > SRS Airbag > Trouble Codes 

      Result

      Result Proceed to
      B00B5-00 is output A
      B00B5-00 is not output B

      HINT: 

      Codes other than DTC B00B5-00 may be output at this time, but they are not related to this check.

      Post-procedure1

    3. None

    Result: 

    A 

    REPLACE AIRBAG SENSOR ASSEMBLY 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    B 

    USE SIMULATION METHOD TO CHECK 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]

  10. CHECK CONNECTION OF CONNECTORS 
    1. Check that the connectors are properly connected to the front seat inner belt assembly LH.

      OK

      The connectors are properly connected.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CONNECT CONNECTORS PROPERLY 

    Result: 

    OK 

    See step  11

  11. CHECK CONNECTORS 

    Pre-procedure1

    1. Disconnect the front seat inner belt assembly LH connector.
      GTY1111469Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness

      Procedure1

    2. Check that the terminals of the connectors are not deformed or damaged.

      OK

      The terminals are not deformed or damaged.

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH OR REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  12

  12. CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY LH - AIRBAG SENSOR ASSEMBLY) 

    Pre-procedure1

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

      Procedure1

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

      Standard Voltage

      Tester Connection Condition Specified Condition
      O23-4 (LSP+) - Body ground Ignition switch ON Below 1 V
      O23-3 (LSP-) - Body ground Ignition switch ON Below 1 V

      Result

      Proceed to
      OK
      NG
      GTY1109587Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness
      *a Front view of wire harness connector
      (to Front Seat Inner Belt Assembly LH)

      Post-procedure1

    4. Turn the ignition switch off.
    5. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.

    Result: 

    OK 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  13. CHECK CONNECTION OF CONNECTORS 
    1. Check that the connectors are properly connected to the front seat inner belt assembly LH.

      OK

      The connectors are properly connected.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CONNECT CONNECTORS PROPERLY 

    Result: 

    OK 

    See step  14

  14. CHECK CONNECTORS 

    Pre-procedure1

    1. Disconnect the front seat inner belt assembly LH connector.
      GTY1111469Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness

      Procedure1

    2. Check that the terminals of the connectors are not deformed or damaged.

      OK

      The terminals are not deformed or damaged.

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH OR REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  15

  15. CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY LH - AIRBAG SENSOR ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      O23-4 (LSP+) - Body ground Always 1 MΩ or higher
      O23-3 (LSP-) - Body ground Always 1 MΩ or higher

      Result

      Proceed to
      OK
      NG
      GTY1109587Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness
      *a Front view of wire harness connector
      (to Front Seat Inner Belt Assembly LH)

    Result: 

    OK 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  16. CHECK CONNECTION OF CONNECTORS 
    1. Check that the connectors are properly connected to the front seat inner belt assembly LH.

      OK

      The connectors are properly connected.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CONNECT CONNECTORS PROPERLY 

    Result: 

    OK 

    See step  17

  17. CHECK CONNECTORS 

    Pre-procedure1

    1. Disconnect the front seat inner belt assembly LH connector.
      GTY1111469Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness

      Procedure1

    2. Check that the terminals of the connectors are not deformed or damaged.

      OK

      The terminals are not deformed or damaged.

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH OR REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  18

  18. CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY LH - AIRBAG SENSOR ASSEMBLY) 

    Pre-procedure1

    1. Using a service wire, connect terminals 27 (LSP+) and 24 (GNDL) of connector B.
      NOTE:

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

      Procedure1

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      O23-4 (LSP+) - O23-3 (LSP-) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG
      GTY1111473Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness
      *5 Service Wire
      *a Front view of wire harness connector
      (to Front Seat Inner Belt Assembly LH)
      *b Front view of wire harness connector
      (to Airbag Sensor Assembly)

      Post-procedure1

    3. Disconnect the service wire from connector B.

    Result: 

    OK 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  19. CHECK CONNECTION OF CONNECTORS 

    Pre-procedure1

    1. Turn the ignition switch off.
    2. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.

      Procedure1

    3. Check that the connectors are properly connected to the airbag sensor assembly and seat position sensor (front seat adjuster assembly LH).

      OK

      The connectors are properly connected.

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    NG 

    CONNECT CONNECTORS PROPERLY 

    Result: 

    OK 

    See step  20

  20. CHECK CONNECTORS 

    Pre-procedure1

    1. Disconnect the airbag sensor assembly connector.
      GTY1060124Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness
    2. Disconnect the seat position sensor connector.

      Procedure1

    3. Check that the terminals of the connectors are not deformed or damaged.

      OK

      The terminals are not deformed or damaged.

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  21

  21. INSPECT SEAT POSITION SENSOR (FRONT SEAT ADJUSTER ASSEMBLY LH) 

    Pre-procedure1

    1. Remove the seat position sensor (front seat adjuster assembly LH).

      Refer to REMOVAL [11/2022 - ]

      Procedure1

    2. Inspect the seat position sensor.
      1. Remove and reinsert the metal plate under the bottom face of the seat position sensor and measure the current value.
        GTY1112438Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 Seat Position Sensor *2 Auxiliary battery
        *a Component without harness connected
        (Seat Position Sensor (Front Seat Adjuster Assembly LH))        		 *b Tester
        *c Metal plate *d Bottom Face

        Standard Current

        Tester Connection Condition Specified Condition
        Tester positive (+) - 1
        Tester negative (-) - Auxiliary battery negative (-)        		 Metal plate inserted 4.7 to 7.3 mA
        Metal plate not inserted 11.4 to 17.9 mA

        Result

        Proceed to
        OK
        NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE SEAT POSITION SENSOR (FRONT SEAT ADJUSTER ASSEMBLY LH) 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    OK 

    See step  22

  22. CHECK SEAT POSITION SENSOR CIRCUIT (CHECK FOR OPEN IN THE CIRCUIT) 

    Pre-procedure1

    1. Using a service wire, connect terminals 27 (LSP+) and 24 (GNDL) of connector B.
      NOTE:

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

      GTY1110253Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH) *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly *4 Wire Harness
      *5 Service Wire - -
      *a Front view of wire harness connector
      (to Seat Position Sensor (Front Seat Adjuster Assembly LH))      		 *b Front view of wire harness connector
      (to Airbag Sensor Assembly)

      Procedure1

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      q10-1 (GND) - q10-2 (VS) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. Disconnect the service wire from connector B.

    Result: 

    NG 

    See step  35

    Result: 

    OK 

    See step  23

  23. CHECK SEAT POSITION SENSOR CIRCUIT (CHECK FOR SHORT TO GROUND IN THE CIRCUIT) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1118511Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH) *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly *4 Wire Harness
      *a Front view of wire harness connector
      (to Seat Position Sensor (Front Seat Adjuster Assembly LH))      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      q10-1 (GND) - Body ground Always 1 MΩ or higher
      q10-2 (VS) - Body ground Always 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  31

    Result: 

    OK 

    See step  24

  24. CHECK SEAT POSITION SENSOR CIRCUIT (CHECK FOR SHORT TO +B IN THE CIRCUIT) 

    Pre-procedure1

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

      Procedure1

    3. Measure the voltage according to the value(s) in the table below.
      GTY1118511Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH) *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly *4 Wire Harness
      *a Front view of wire harness connector
      (to Seat Position Sensor (Front Seat Adjuster Assembly LH))      		 - -

      Standard Voltage

      Tester Connection Condition Specified Condition
      q10-1 (GND) - Body ground Ignition switch ON Below 1 V
      q10-2 (VS) - Body ground Ignition switch ON Below 1 V

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. Turn the ignition switch off.
    5. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.

    Result: 

    NG 

    See step  27

    Result: 

    OK 

    See step  25

  25. CLEAR DTC 

    Pre-procedure1

    1. Connect the airbag sensor assembly connector.
      GTY1080613Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness
    2. Connect the seat position sensor (front seat adjuster assembly LH) connector.
    3. Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
    4. Turn the ignition switch to ON, and wait for at least 60 seconds.

      Procedure1

    5. Clear the DTCs stored in memory.

      Body Electrical > SRS Airbag > Clear DTCs 

      Result

      Proceed to
      NEXT

      Post-procedure1

    6. Turn the ignition switch off.

    Result: 

    NEXT 

    See step  26

  26. CHECK DTC 

    Pre-procedure1

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

      Procedure1

    2. Check for DTCs.

      Body Electrical > SRS Airbag > Trouble Codes 

      Result

      Result Proceed to
      B00B5-00 is output A
      B00B5-00 is not output B

      HINT: 

      Codes other than DTC B00B5-00 may be output at this time, but they are not related to this check.

      Post-procedure1

    3. None

    Result: 

    A 

    REPLACE AIRBAG SENSOR ASSEMBLY 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    B 

    USE SIMULATION METHOD TO CHECK 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]

  27. CHECK CONNECTION OF CONNECTORS 
    1. Check that the connectors are properly connected to the front seat inner belt assembly LH.

      OK

      The connectors are properly connected.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CONNECT CONNECTORS PROPERLY 

    Result: 

    OK 

    See step  28

  28. CHECK CONNECTORS 

    Pre-procedure1

    1. Disconnect the front seat inner belt assembly LH connector.
      GTY1060318Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness

      Procedure1

    2. Check that the terminals of the connectors are not deformed or damaged.

      OK

      The terminals are not deformed or damaged.

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH OR REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  29

  29. CHECK HARNESS AND CONNECTOR (SEAT POSITION SENSOR - FRONT SEAT INNER BELT ASSEMBLY LH) 

    Pre-procedure1

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

      Procedure1

    3. Measure the voltage according to the value(s) in the table below.
      GTY1111035Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH) *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly *4 Wire Harness
      *a Front view of wire harness connector
      (to Seat Position Sensor (Front Seat Adjuster Assembly LH))      		 - -

      Standard Voltage

      Tester Connection Condition Specified Condition
      q10-2 (VS) - Body ground Ignition switch ON Below 1 V
      q10-1 (GND) - Body ground Ignition switch ON Below 1 V

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. Turn the ignition switch off.
    5. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  30

  30. CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY LH - AIRBAG SENSOR ASSEMBLY) 

    Pre-procedure1

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

      Procedure1

    3. Measure the voltage according to the value(s) in the table below.
      GTY1117514Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH) *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly *4 Wire Harness
      *a Front view of wire harness connector
      (to Front Seat Inner Belt Assembly LH)      		 - -

      Standard Voltage

      Tester Connection Condition Specified Condition
      O23-4 (LSP+) - Body ground Ignition switch ON Below 1 V
      O23-3 (LSP-) - Body ground Ignition switch ON Below 1 V

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. Turn the ignition switch off.
    5. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.

    Result: 

    OK 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  31. CHECK CONNECTION OF CONNECTORS 
    1. Check that the connectors are properly connected to the front seat inner belt assembly LH.

      OK

      The connectors are properly connected.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CONNECT CONNECTORS PROPERLY 

    Result: 

    OK 

    See step  32

  32. CHECK CONNECTORS 

    Pre-procedure1

    1. Disconnect the front seat inner belt assembly LH connector.
      GTY1060318Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness

      Procedure1

    2. Check that the terminals of the connectors are not deformed or damaged.

      OK

      The terminals are not deformed or damaged.

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH OR REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  33

  33. CHECK HARNESS AND CONNECTOR (SEAT POSITION SENSOR - FRONT SEAT INNER BELT ASSEMBLY LH) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1111035Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH) *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly *4 Wire Harness
      *a Front view of wire harness connector
      (to Seat Position Sensor (Front Seat Adjuster Assembly LH))      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      q10-2 (VS) - Body ground Always 1 MΩ or higher
      q10-1 (GND) - Body ground Always 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  34

  34. CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY LH - AIRBAG SENSOR ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1117514Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH) *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly *4 Wire Harness
      *a Front view of wire harness connector
      (to Front Seat Inner Belt Assembly LH)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      O23-4 (LSP+) - Body ground Always 1 MΩ or higher
      O23-3 (LSP-) - Body ground Always 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  35. CHECK CONNECTION OF CONNECTORS 
    1. Check that the connectors are properly connected to the front seat inner belt assembly LH.

      OK

      The connectors are properly connected.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CONNECT CONNECTORS PROPERLY 

    Result: 

    OK 

    See step  36

  36. CHECK CONNECTORS 

    Pre-procedure1

    1. Disconnect the front seat inner belt assembly LH connector.
      GTY1060318Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness

      Procedure1

    2. Check that the terminals of the connectors are not deformed or damaged.

      OK

      The terminals are not deformed or damaged.

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH OR REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  37

  37. CHECK HARNESS AND CONNECTOR (SEAT POSITION SENSOR - FRONT SEAT INNER BELT ASSEMBLY LH) 

    Pre-procedure1

    1. Using a service wire, connect terminals 2 (LSP+) and 1 (LSP-) of connector F.
      NOTE:

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

      Procedure1

    2. Measure the resistance according to the value(s) in the table below.
      GTY1113965Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH) *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly *4 Wire Harness
      *5 Service Wire - -
      *a Front view of wire harness connector
      (to Seat Position Sensor (Front Seat Adjuster Assembly LH))      		 *b Front view of wire harness connector
      (to Front Seat Inner Belt Assembly LH)

      Standard Resistance

      Tester Connection Condition Specified Condition
      q10-2 (VS) - q10-1 (GND) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. Disconnect the service wire from connector F.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  38

  38. CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY LH - AIRBAG SENSOR ASSEMBLY) 

    Pre-procedure1

    1. Using a service wire, connect terminals 27 (LSP+) and 24 (GNDL) of connector B.
      NOTE:

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

      Procedure1

    2. Measure the resistance according to the value(s) in the table below.
      GTY1119036Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH) *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly *4 Wire Harness
      *5 Service Wire - -
      *a Front view of wire harness connector
      (to Front Seat Inner Belt Assembly LH)      		 *b Front view of wire harness connector
      (to Airbag Sensor Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      O23-4 (LSP+) - O23-3 (LSP-) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. Disconnect the service wire from connector B.

    Result: 

    OK 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  39. CHECK CONNECTION OF CONNECTORS 

    Pre-procedure1

    1. Turn the ignition switch off.
    2. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.

      Procedure1

    3. Check that the connectors are properly connected to the airbag sensor assembly and seat position sensor (separate type front seat cushion spring assembly LH).

      OK

      The connectors are properly connected.

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    NG 

    CONNECT CONNECTORS PROPERLY 

    Result: 

    OK 

    See step  40

  40. CHECK CONNECTORS 

    Pre-procedure1

    1. Disconnect the airbag sensor assembly connector.
      GTY1113114Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness
    2. Disconnect the seat position sensor connector.

      Procedure1

    3. Check that the terminals of the connectors are not deformed or damaged.

      OK

      The terminals are not deformed or damaged.

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    NG 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH OR REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  41

  41. INSPECT SEAT POSITION SENSOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) 

    Pre-procedure1

    1. Remove the seat position sensor (separate type front seat cushion spring assembly LH).

      Refer to REMOVAL [11/2022 - ]

      Procedure1

    2. Inspect the seat position sensor.
      1. Remove and reinsert the metal plate under the bottom face of the seat position sensor and measure the current value.
        GTY1112438Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 Seat Position Sensor *2 Auxiliary battery
        *a Component without harness connected
        (Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH))        		 *b Tester
        *c Metal plate *d Bottom Face

        Standard Current

        Tester Connection Condition Specified Condition
        Tester positive (+) - 1
        Tester negative (-) - Auxiliary battery negative (-)        		 Metal plate inserted 4.7 to 7.3 mA
        Metal plate not inserted 11.4 to 17.9 mA

        Result

        Proceed to
        OK
        NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE SEAT POSITION SENSOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    OK 

    See step  42

  42. CHECK SEAT POSITION SENSOR CIRCUIT (CHECK FOR OPEN IN THE CIRCUIT) 

    Pre-procedure1

    1. Using a service wire, connect terminals 27 (LSP+) and 24 (GNDL) of connector B.
      NOTE:

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

      GTY1114956Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness
      *5 Service Wire
      *a Front view of wire harness connector
      (to Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH))
      *b Front view of wire harness connector
      (to Airbag Sensor Assembly)

      Procedure1

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      z20-1 (GND) - z20-2 (VS) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. Disconnect the service wire from connector B.

    Result: 

    NG 

    See step  53

    Result: 

    OK 

    See step  43

  43. CHECK SEAT POSITION SENSOR CIRCUIT (CHECK FOR SHORT TO GROUND IN THE CIRCUIT) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      z20-1 (GND) - Body ground Always 1 MΩ or higher
      z20-2 (VS) - Body ground Always 1 MΩ or higher
      GTY1117234Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness
      *a Front view of wire harness connector
      (to Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH))

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  50

    Result: 

    OK 

    See step  44

  44. CHECK SEAT POSITION SENSOR CIRCUIT (CHECK FOR SHORT TO +B IN THE CIRCUIT) 

    Pre-procedure1

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

      Procedure1

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

      Standard Voltage

      Tester Connection Condition Specified Condition
      z20-1 (GND) - Body ground Ignition switch ON Below 1 V
      z20-2 (VS) - Body ground Ignition switch ON Below 1 V

      Result

      Proceed to
      OK
      NG
      GTY1117234Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness
      *a Front view of wire harness connector
      (to Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH))

      Post-procedure1

    4. Turn the ignition switch off.
    5. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.

    Result: 

    NG 

    See step  47

    Result: 

    OK 

    See step  45

  45. CLEAR DTC 

    Pre-procedure1

    1. Connect the airbag sensor assembly connector.
      GTY1103261Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness
    2. Connect the seat position sensor (separate type front seat cushion spring assembly LH) connector.
    3. Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
    4. Turn the ignition switch to ON, and wait for at least 60 seconds.

      Procedure1

    5. Clear the DTCs stored in memory.

      Body Electrical > SRS Airbag > Clear DTCs 

      Result

      Proceed to
      NEXT

      Post-procedure1

    6. Turn the ignition switch off.

    Result: 

    NEXT 

    See step  46

  46. CHECK DTC 

    Pre-procedure1

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

      Procedure1

    2. Check for DTCs.

      Body Electrical > SRS Airbag > Trouble Codes 

      Result

      Result Proceed to
      B00B5-00 is output A
      B00B5-00 is not output B

      HINT: 

      Codes other than DTC B00B5-00 may be output at this time, but they are not related to this check.

      Post-procedure1

    3. None

    Result: 

    A 

    REPLACE AIRBAG SENSOR ASSEMBLY 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    B 

    USE SIMULATION METHOD TO CHECK 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]

  47. CHECK CONNECTION OF CONNECTORS 
    1. Check that the connectors are properly connected to the front seat inner belt assembly LH.

      OK

      The connectors are properly connected.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CONNECT CONNECTORS PROPERLY 

    Result: 

    OK 

    See step  48

  48. CHECK CONNECTORS 

    Pre-procedure1

    1. Disconnect the front seat inner belt assembly LH connector.
      GTY1111469Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness

      Procedure1

    2. Check that the terminals of the connectors are not deformed or damaged.

      OK

      The terminals are not deformed or damaged.

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH OR REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  49

  49. CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY LH - AIRBAG SENSOR ASSEMBLY) 

    Pre-procedure1

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

      Procedure1

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

      Standard Voltage

      Tester Connection Condition Specified Condition
      O23-4 (LSP+) - Body ground Ignition switch ON Below 1 V
      O23-3 (LSP-) - Body ground Ignition switch ON Below 1 V

      Result

      Proceed to
      OK
      NG
      GTY1109587Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness
      *a Front view of wire harness connector
      (to Front Seat Inner Belt Assembly LH)

      Post-procedure1

    4. Turn the ignition switch off.
    5. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.

    Result: 

    OK 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  50. CHECK CONNECTION OF CONNECTORS 
    1. Check that the connectors are properly connected to the front seat inner belt assembly LH.

      OK

      The connectors are properly connected.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CONNECT CONNECTORS PROPERLY 

    Result: 

    OK 

    See step  51

  51. CHECK CONNECTORS 

    Pre-procedure1

    1. Disconnect the front seat inner belt assembly LH connector.
      GTY1111469Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness

      Procedure1

    2. Check that the terminals of the connectors are not deformed or damaged.

      OK

      The terminals are not deformed or damaged.

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH OR REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  52

  52. CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY LH - AIRBAG SENSOR ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      O23-4 (LSP+) - Body ground Always 1 MΩ or higher
      O23-3 (LSP-) - Body ground Always 1 MΩ or higher

      Result

      Proceed to
      OK
      NG
      GTY1109587Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness
      *a Front view of wire harness connector
      (to Front Seat Inner Belt Assembly LH)

    Result: 

    OK 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  53. CHECK CONNECTION OF CONNECTORS 
    1. Check that the connectors are properly connected to the front seat inner belt assembly LH.

      OK

      The connectors are properly connected.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CONNECT CONNECTORS PROPERLY 

    Result: 

    OK 

    See step  54

  54. CHECK CONNECTORS 

    Pre-procedure1

    1. Disconnect the front seat inner belt assembly LH connector.
      GTY1111469Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness

      Procedure1

    2. Check that the terminals of the connectors are not deformed or damaged.

      OK

      The terminals are not deformed or damaged.

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH OR REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  55

  55. CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY LH - AIRBAG SENSOR ASSEMBLY) 

    Pre-procedure1

    1. Using a service wire, connect terminals 27 (LSP+) and 24 (GNDL) of connector B.
      NOTE:

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

      Procedure1

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      O23-4 (LSP+) - O23-3 (LSP-) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG
      GTY1111473Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness
      *5 Service Wire
      *a Front view of wire harness connector
      (to Front Seat Inner Belt Assembly LH)
      *b Front view of wire harness connector
      (to Airbag Sensor Assembly)

      Post-procedure1

    3. Disconnect the service wire from connector B.

    Result: 

    OK 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  56. CHECK CONNECTION OF CONNECTORS 

    Pre-procedure1

    1. Turn the ignition switch off.
    2. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.

      Procedure1

    3. Check that the connectors are properly connected to the airbag sensor assembly and seat position sensor (separate type front seat cushion spring assembly LH).

      OK

      The connectors are properly connected.

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    NG 

    CONNECT CONNECTORS PROPERLY 

    Result: 

    OK 

    See step  57

  57. CHECK CONNECTORS 

    Pre-procedure1

    1. Disconnect the airbag sensor assembly connector.
      GTY1060124Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness
    2. Disconnect the seat position sensor connector.

      Procedure1

    3. Check that the terminals of the connectors are not deformed or damaged.

      OK

      The terminals are not deformed or damaged.

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. None

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  58

  58. INSPECT SEAT POSITION SENSOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) 

    Pre-procedure1

    1. Remove the seat position sensor (separate type front seat cushion spring assembly LH).

      Refer to REMOVAL [11/2022 - ]

      Procedure1

    2. Inspect the seat position sensor.
      1. Remove and reinsert the metal plate under the bottom face of the seat position sensor and measure the current value.
        GTY1112438Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
        *1 Seat Position Sensor *2 Auxiliary battery
        *a Component without harness connected
        (Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH))        		 *b Tester
        *c Metal plate *d Bottom Face

        Standard Current

        Tester Connection Condition Specified Condition
        Tester positive (+) - 1
        Tester negative (-) - Auxiliary battery negative (-)        		 Metal plate inserted 4.7 to 7.3 mA
        Metal plate not inserted 11.4 to 17.9 mA

        Result

        Proceed to
        OK
        NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE SEAT POSITION SENSOR (SEPARATE TYPE FRONT SEAT CUSHION SPRING ASSEMBLY LH) 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    OK 

    See step  59

  59. CHECK SEAT POSITION SENSOR CIRCUIT (CHECK FOR OPEN IN THE CIRCUIT) 

    Pre-procedure1

    1. Using a service wire, connect terminals 27 (LSP+) and 24 (GNDL) of connector B.
      NOTE:

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

      GTY1110253Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH) *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly *4 Wire Harness
      *5 Service Wire - -
      *a Front view of wire harness connector
      (to Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH))      		 *b Front view of wire harness connector
      (to Airbag Sensor Assembly)

      Procedure1

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      q10-1 (GND) - q10-2 (VS) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. Disconnect the service wire from connector B.

    Result: 

    NG 

    See step  72

    Result: 

    OK 

    See step  60

  60. CHECK SEAT POSITION SENSOR CIRCUIT (CHECK FOR SHORT TO GROUND IN THE CIRCUIT) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1118511Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH) *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly *4 Wire Harness
      *a Front view of wire harness connector
      (to Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH))      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      q10-1 (GND) - Body ground Always 1 MΩ or higher
      q10-2 (VS) - Body ground Always 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    See step  68

    Result: 

    OK 

    See step  61

  61. CHECK SEAT POSITION SENSOR CIRCUIT (CHECK FOR SHORT TO +B IN THE CIRCUIT) 

    Pre-procedure1

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

      Procedure1

    3. Measure the voltage according to the value(s) in the table below.
      GTY1118511Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH) *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly *4 Wire Harness
      *a Front view of wire harness connector
      (to Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH))      		 - -

      Standard Voltage

      Tester Connection Condition Specified Condition
      q10-1 (GND) - Body ground Ignition switch ON Below 1 V
      q10-2 (VS) - Body ground Ignition switch ON Below 1 V

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. Turn the ignition switch off.
    5. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.

    Result: 

    NG 

    See step  64

    Result: 

    OK 

    See step  62

  62. CLEAR DTC 

    Pre-procedure1

    1. Connect the airbag sensor assembly connector.
      GTY1080613Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness
    2. Connect the seat position sensor (separate type front seat cushion spring assembly LH) connector.
    3. Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
    4. Turn the ignition switch to ON, and wait for at least 60 seconds.

      Procedure1

    5. Clear the DTCs stored in memory.

      Body Electrical > SRS Airbag > Clear DTCs 

      Result

      Proceed to
      NEXT

      Post-procedure1

    6. Turn the ignition switch off.

    Result: 

    NEXT 

    See step  63

  63. CHECK DTC 

    Pre-procedure1

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

      Procedure1

    2. Check for DTCs.

      Body Electrical > SRS Airbag > Trouble Codes 

      Result

      Result Proceed to
      B00B5-00 is output A
      B00B5-00 is not output B

      HINT: 

      Codes other than DTC B00B5-00 may be output at this time, but they are not related to this check.

      Post-procedure1

    3. None

    Result: 

    A 

    REPLACE AIRBAG SENSOR ASSEMBLY 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    B 

    USE SIMULATION METHOD TO CHECK 

    Refer to HOW TO PROCEED WITH TROUBLESHOOTING [06/2018 - ]

  64. CHECK CONNECTION OF CONNECTORS 
    1. Check that the connectors are properly connected to the front seat inner belt assembly LH.

      OK

      The connectors are properly connected.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CONNECT CONNECTORS PROPERLY 

    Result: 

    OK 

    See step  65

  65. CHECK CONNECTORS 

    Pre-procedure1

    1. Disconnect the front seat inner belt assembly LH connector.
      GTY1060318Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness

      Procedure1

    2. Check that the terminals of the connectors are not deformed or damaged.

      OK

      The terminals are not deformed or damaged.

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH OR REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  66

  66. CHECK HARNESS AND CONNECTOR (SEAT POSITION SENSOR - FRONT SEAT INNER BELT ASSEMBLY LH) 

    Pre-procedure1

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

      Procedure1

    3. Measure the voltage according to the value(s) in the table below.
      GTY1111035Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH) *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly *4 Wire Harness
      *a Front view of wire harness connector
      (to Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH))      		 - -

      Standard Voltage

      Tester Connection Condition Specified Condition
      q10-2 (VS) - Body ground Ignition switch ON Below 1 V
      q10-1 (GND) - Body ground Ignition switch ON Below 1 V

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. Turn the ignition switch off.
    5. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  67

  67. CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY LH - AIRBAG SENSOR ASSEMBLY) 

    Pre-procedure1

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

      Procedure1

    3. Measure the voltage according to the value(s) in the table below.
      GTY1117514Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH) *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly *4 Wire Harness
      *a Front view of wire harness connector
      (to Front Seat Inner Belt Assembly LH)      		 - -

      Standard Voltage

      Tester Connection Condition Specified Condition
      O23-4 (LSP+) - Body ground Ignition switch ON Below 1 V
      O23-3 (LSP-) - Body ground Ignition switch ON Below 1 V

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    4. Turn the ignition switch off.
    5. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.

    Result: 

    OK 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  68. CHECK CONNECTION OF CONNECTORS 
    1. Check that the connectors are properly connected to the front seat inner belt assembly LH.

      OK

      The connectors are properly connected.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CONNECT CONNECTORS PROPERLY 

    Result: 

    OK 

    See step  69

  69. CHECK CONNECTORS 

    Pre-procedure1

    1. Disconnect the front seat inner belt assembly LH connector.
      GTY1060318Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness

      Procedure1

    2. Check that the terminals of the connectors are not deformed or damaged.

      OK

      The terminals are not deformed or damaged.

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH OR REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  70

  70. CHECK HARNESS AND CONNECTOR (SEAT POSITION SENSOR - FRONT SEAT INNER BELT ASSEMBLY LH) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1111035Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH) *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly *4 Wire Harness
      *a Front view of wire harness connector
      (to Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH))      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      q10-2 (VS) - Body ground Always 1 MΩ or higher
      q10-1 (GND) - Body ground Always 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  71

  71. CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY LH - AIRBAG SENSOR ASSEMBLY) 
    1. Measure the resistance according to the value(s) in the table below.
      GTY1117514Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH) *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly *4 Wire Harness
      *a Front view of wire harness connector
      (to Front Seat Inner Belt Assembly LH)      		 - -

      Standard Resistance

      Tester Connection Condition Specified Condition
      O23-4 (LSP+) - Body ground Always 1 MΩ or higher
      O23-3 (LSP-) - Body ground Always 1 MΩ or higher

      Result

      Proceed to
      OK
      NG

    Result: 

    OK 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

  72. CHECK CONNECTION OF CONNECTORS 
    1. Check that the connectors are properly connected to the front seat inner belt assembly LH.

      OK

      The connectors are properly connected.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    CONNECT CONNECTORS PROPERLY 

    Result: 

    OK 

    See step  73

  73. CHECK CONNECTORS 

    Pre-procedure1

    1. Disconnect the front seat inner belt assembly LH connector.
      GTY1060318Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH)
      *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly
      *4 Wire Harness

      Procedure1

    2. Check that the terminals of the connectors are not deformed or damaged.

      OK

      The terminals are not deformed or damaged.

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. None

    Result: 

    NG 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH OR REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  74

  74. CHECK HARNESS AND CONNECTOR (SEAT POSITION SENSOR - FRONT SEAT INNER BELT ASSEMBLY LH) 

    Pre-procedure1

    1. Using a service wire, connect terminals 2 (LSP+) and 1 (LSP-) of connector F.
      NOTE:

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

      Procedure1

    2. Measure the resistance according to the value(s) in the table below.
      GTY1113965Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH) *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly *4 Wire Harness
      *5 Service Wire - -
      *a Front view of wire harness connector
      (to Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH))      		 *b Front view of wire harness connector
      (to Front Seat Inner Belt Assembly LH)

      Standard Resistance

      Tester Connection Condition Specified Condition
      q10-2 (VS) - q10-1 (GND) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. Disconnect the service wire from connector F.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  75

  75. CHECK HARNESS AND CONNECTOR (FRONT SEAT INNER BELT ASSEMBLY LH - AIRBAG SENSOR ASSEMBLY) 

    Pre-procedure1

    1. Using a service wire, connect terminals 27 (LSP+) and 24 (GNDL) of connector B.
      NOTE:

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

      Procedure1

    2. Measure the resistance according to the value(s) in the table below.
      GTY1119036Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Separate Type Front Seat Cushion Spring Assembly LH) *2 Front Seat Inner Belt Assembly LH
      *3 Airbag Sensor Assembly *4 Wire Harness
      *5 Service Wire - -
      *a Front view of wire harness connector
      (to Front Seat Inner Belt Assembly LH)      		 *b Front view of wire harness connector
      (to Airbag Sensor Assembly)

      Standard Resistance

      Tester Connection Condition Specified Condition
      O23-4 (LSP+) - O23-3 (LSP-) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. Disconnect the service wire from connector B.

    Result: 

    OK 

    REPLACE FRONT SEAT INNER BELT ASSEMBLY LH 

    Refer to REMOVAL [11/2022 - ]

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

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