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Home >> Toyota >> 2021 >> Highlander LE, 4WD >> Repair and Diagnosis >> Restraints >> Air Bag, SRS >> Airbag System - Diagnostic Codes (4 Of 7) >> Airbag System >> DTC B0093-87: Left Side Restraints Sensor 3 Missing Message [11/2023 - ] >> Procedure

DTC B0093-87: Left Side Restraints Sensor 3 Missing Message [11/2023 - ]: Procedure

  1. 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
      B0093-87 and B009B-87 are output A
      B0093-87 is output B
      B0093-87 and B009B-87 are not output C

      Post-procedure1

    3. None

    Result: 

    B 

    REPLACE REAR AIRBAG SENSOR LH. Refer to  REMOVAL [11/2023 - ] 

    Result: 

    C 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] 

    Result: 

    A 

    See step  2

  2. CLEAR DTC 

    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.
    3. Disconnect the side airbag sensor assembly LH connector.
    4. Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
    5. Turn the ignition switch to ON, and wait for at least 60 seconds.

      Procedure1

    6. Clear the DTCs stored in memory.

      Body Electrical > SRS Airbag > Clear DTCs 

      Result

      Proceed to
      NEXT

      Post-procedure1

    7. Turn the ignition switch off.

    Result: 

    NEXT 

    See step  3

  3. CHECK SIDE AIRBAG SENSOR ASSEMBLY LH 

    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
      B0093-87 and B009B-87 are output A
      B0093-87 is output B

      HINT: 

      Codes other than DTCs B0093-87 and B009B-87 may be output at this time, but they are not related to this check.

      Post-procedure1

    3. Turn the ignition switch off.
    4. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.
    5. Connect the side airbag sensor assembly LH connector.

    Result: 

    B 

    REPLACE SIDE AIRBAG SENSOR ASSEMBLY LH. Refer to  REMOVAL [11/2023 - ] 

    Result: 

    A 

    See step  4

  4. CHECK CONNECTION OF CONNECTORS 
    1. Check that the connectors are properly connected to the airbag sensor assembly, rear airbag sensor LH 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  5

  5. CHECK CONNECTORS 

    Pre-procedure1

    1. Disconnect the rear airbag sensor LH connector.
      GTY973561Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Side Airbag Sensor Assembly LH
      *2 Rear Airbag Sensor LH
      *3 Wire Harness
    2. Disconnect the side airbag sensor assembly LH 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  6

  6. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN THE CIRCUIT) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      M62-1 (BDL+) - M62-2 (BDL-) Always 1 MΩ or higher
      GTY1178351Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Side Airbag Sensor Assembly LH
      *2 Rear Airbag Sensor LH
      *3 Wire Harness
      *a Front view of wire harness connector
      (to Rear Airbag Sensor LH)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  7

  7. 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
      M62-1 (BDL+) - Body ground Always 1 MΩ or higher
      M62-2 (BDL-) - Body ground Always 1 MΩ or higher
      GTY1178351Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Side Airbag Sensor Assembly LH
      *2 Rear Airbag Sensor LH
      *3 Wire Harness
      *a Front view of wire harness connector
      (to Rear Airbag Sensor LH)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  8

  8. CHECK HARNESS AND CONNECTOR (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.
      GTY1178351Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Side Airbag Sensor Assembly LH
      *2 Rear Airbag Sensor LH
      *3 Wire Harness
      *a Front view of wire harness connector
      (to Rear Airbag Sensor LH)

      Standard Voltage

      Tester Connection Condition Specified Condition
      M62-1 (BDL+) - Body ground Ignition switch ON Below 1 V
      M62-2 (BDL-) - 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  9

  9. CHECK CONNECTORS 

    Pre-procedure1

    1. Disconnect the airbag sensor assembly connector.
      GTY1015968Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Rear Airbag Sensor LH
      *2 Airbag Sensor Assembly
      *3 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 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  10

  10. CHECK HARNESS AND CONNECTOR (CHECK FOR SHORT IN THE CIRCUIT) 
    1. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      M62-4 (BCL+) - M62-3 (BCL-) Always 1 MΩ or higher
      GTY1178422Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Rear Airbag Sensor LH
      *2 Airbag Sensor Assembly
      *3 Wire Harness
      *a Front view of wire harness connector
      (to Rear Airbag Sensor LH)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  11

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

    Pre-procedure1

    1. Using a service wire, connect terminals 32 (BBL+) and 31 (BBL-) of connector B.
      GTY1177928Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Rear Airbag Sensor LH
      *2 Airbag Sensor Assembly
      *3 Wire Harness
      *4 Service Wire
      *a Front view of wire harness connector
      (to Rear Airbag Sensor LH)
      *b Front view of wire harness connector
      (to Airbag Sensor Assembly)
      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
      M62-4 (BCL+) - M62-3 (BCL-) Always Below 1 Ω

      Result

      Proceed to
      OK
      NG

      Post-procedure1

    3. Disconnect the service wire from connector B.

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  12

  12. 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
      M62-4 (BCL+) - Body ground Always 1 MΩ or higher
      M62-3 (BCL-) - Body ground Always 1 MΩ or higher
      GTY1178422Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Rear Airbag Sensor LH
      *2 Airbag Sensor Assembly
      *3 Wire Harness
      *a Front view of wire harness connector
      (to Rear Airbag Sensor LH)

      Result

      Proceed to
      OK
      NG

    Result: 

    NG 

    REPAIR OR REPLACE HARNESS OR CONNECTOR 

    Result: 

    OK 

    See step  13

  13. CHECK HARNESS AND CONNECTOR (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.
      GTY1178422Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Rear Airbag Sensor LH
      *2 Airbag Sensor Assembly
      *3 Wire Harness
      *a Front view of wire harness connector
      (to Rear Airbag Sensor LH)

      Standard Voltage

      Tester Connection Condition Specified Condition
      M62-4 (BCL+) - Body ground Ignition switch ON Below 1 V
      M62-3 (BCL-) - 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  14

  14. CLEAR DTC 

    Pre-procedure1

    1. Connect the airbag sensor assembly connector.
    2. Connect the side airbag sensor assembly LH connector.
    3. Interchange the rear airbag sensor LH with RH and connect the connectors to them.
      GTY972932Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Rear Airbag Sensor RH
      *2 Airbag Sensor Assembly
      *3 Wire Harness
    4. Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
    5. Turn the ignition switch to ON, and wait for at least 60 seconds.

      Procedure1

    6. Clear the DTCs stored in memory.

      Body Electrical > SRS Airbag > Clear DTCs 

      Result

      Proceed to
      NEXT

      Post-procedure1

    7. Turn the ignition switch off.

    Result: 

    NEXT 

    See step  15

  15. CHECK REAR AIRBAG SENSOR LH 

    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
      B0093-87 and B009B-87 are output A
      B0098-87 and B009E-87 are output B
      B0093-87, B0098-87, B009B-87 and B009E-87 are not output C

      HINT: 

      Codes other than DTCs B0093-87, B0098-87, B009B-87 and B009E-87 may be output at this time, but they are not related to this check.

      Post-procedure1

    3. Turn the ignition switch off.
    4. Disconnect the cable from the negative (-) auxiliary battery terminal, and wait for at least 60 seconds.
    5. Return the rear airbag sensor RH and LH to their original positions and connect the connectors to them.

    Result: 

    B 

    REPLACE REAR AIRBAG SENSOR LH. Refer to  REMOVAL [11/2023 - ] 

    Result: 

    C 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] 

    Result: 

    A 

    See step  16

  16. CLEAR DTC 

    Pre-procedure1

    1. Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
      GTY972932Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      *1 Rear Airbag Sensor LH
      *2 Airbag Sensor Assembly
      *3 Wire Harness
    2. Turn the ignition switch to ON, and wait for at least 60 seconds.

      Procedure1

    3. Clear the DTCs stored in memory.

      Body Electrical > SRS Airbag > Clear DTCs 

      Result

      Proceed to
      NEXT

      Post-procedure1

    4. Turn the ignition switch off.

    Result: 

    NEXT 

    See step  17

  17. CHECK AIRBAG SENSOR ASSEMBLY 

    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
      B0093-87 and B009B-87 are output A
      B0093-87 and B009B-87 are not output B

      HINT: 

      Codes other than DTCs B0093-87 and B009B-87 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 [11/2023 - ] 

    Result: 

    B 

    USE SIMULATION METHOD TO CHECK. Refer to  HOW TO PROCEED WITH TROUBLESHOOTING [12/2019 - ] 

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