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Home >> Toyota >> 2021 >> Venza LE >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System - Diagnostic Codes (4 Of 4) & Symptom Tests >> Airbag System >> DTC B00B5-00: Driver Seat Track Position Restraints Sensor Circuit Undetermined Failure [07/2020 - ] >> Procedure

DTC B00B5-00: Driver Seat Track Position Restraints Sensor Circuit Undetermined Failure [07/2020 - ]: Procedure

  1. CHECK CONNECTION OF CONNECTORS 
    1. Turn the ignition switch off.
    2. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.
    3. Check that the connectors are properly connected to the airbag sensor assembly and seat position sensor (front seat adjuster assembly LH).

      Result

      Proceed to
      Connectors are properly connected
      Connectors are not properly connected

    Result: 

    Connectors are not properly connected 

    CONNECT CONNECTORS PROPERLY 

    Result: 

    Connectors are properly connected 

    See step  2

  2. CHECK CONNECTORS 
    1. Disconnect the airbag sensor assembly connector.
      GTY972961Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH)
      *2 Airbag Sensor Assembly
      *3 Wire Harness
    2. Disconnect the seat position sensor connector.
    3. Check that the connectors (on the airbag sensor assembly side and seat position sensor (front seat adjuster assembly LH) side) are not damaged.

      Result

      Proceed to
      Connectors are not deformed or damaged
      Connectors are deformed or damaged

    Result: 

    Connectors are deformed or damaged 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    Connectors are not deformed or damaged 

    See step  3

  3. INSPECT SEAT POSITION SENSOR (FRONT SEAT ADJUSTER ASSEMBLY LH) 
    1. Remove the seat position sensor (front seat adjuster assembly LH).

      Refer to REMOVAL [07/2020 - 10/2022] , or refer to REMOVAL [10/2022 - ]

    2. Inspect the seat position sensor.
      1. Remove and reinsert the metal plate into the slit of the seat position sensor and measure the current value.
        GTY986855Courtesy 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 - -

        Standard Current

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

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPLACE SEAT POSITION SENSOR (FRONT SEAT ADJUSTER ASSEMBLY LH). Refer to  REMOVAL [07/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - ] 

    Result: 

    OK 

    See step  4

  4. CHECK HARNESS AND CONNECTOR (CHECK FOR OPEN IN THE CIRCUIT) 
    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.

      GTY986637Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH)
      *2 Airbag Sensor Assembly
      *3 Wire Harness
      *4 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)
    2. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      U24-1 (GND) - U24-2 (VS) Always Below 1 Ω
    3. Disconnect the service wire from connector B.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  5

  5. CHECK HARNESS AND CONNECTOR (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
      U24-1 (GND) - Body ground Always 1 MΩ or higher
      U24-2 (VS) - Body ground Always 1 MΩ or higher
      GTY1010926Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH)
      *2 Airbag Sensor Assembly
      *3 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 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  6

  6. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT TO +B IN THE CIRCUIT) 
    1. Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
      GTY1010926Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH)
      *2 Airbag Sensor Assembly
      *3 Wire Harness
      *a Front view of wire harness connector
      (to Seat Position Sensor (Front Seat Adjuster 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 Condition Specified Condition
      U24-1 (GND) - Body ground Ignition switch ON Below 1 V
      U24-2 (VS) - Body ground Ignition switch ON Below 1 V
    4. Turn the ignition switch off.
    5. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  7

  7. CHECK DTC 
    1. Connect the airbag sensor assembly connector.
      GTY972931Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Seat Position Sensor (Front Seat Adjuster Assembly LH)
      *2 Airbag Sensor Assembly
      *3 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.
    5. Clear the DTCs stored in memory.

      Body Electrical > SRS Airbag > Clear DTCs 

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

      Body Electrical > SRS Airbag > Trouble Codes 

      Result

      Proceed to
      DTC B00B5-00 is output
      DTC B00B5-00 is not output

      HINT: 

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

    Result: 

    DTC B00B5-00 is output 

    REPLACE AIRBAG SENSOR ASSEMBLY. Refer to  REMOVAL [07/2020 - 10/2022]  , or refer to  REMOVAL [10/2022 - ] 

    Result: 

    DTC B00B5-00 is not output 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [07/2020 - ] 

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