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Home >> Scion >> 2012 >> tC Automatic Trans >> Repair and Diagnosis (Single Page) >> Restraints >> Air Bag, SRS >> Supplemental Restraint System (Diagnostic Codes & Symptom Tests) >> Airbag System >> DTC B1642/81: Lost Communication with Side Satellite Sensor Bus RH; DTC B1647/82: Lost Communication with Side Satellite Sensor Bus LH >> Procedure

DTC B1642/81: Lost Communication with Side Satellite Sensor Bus RH; DTC B1647/82: Lost Communication with Side Satellite Sensor Bus LH: Procedure

  1. CHECK FOR DTC 
    1. Turn the ignition switch off.
    2. Turn the ignition switch to ON, and wait for at least 60 seconds.
    3. Check for DTCs. Refer to DTC CHECK / CLEAR .
      RESULT

      Result Proceed to
      DTC B1642 and B1647 are not output A
      DTC B1647 is output B
      DTC B1642 is output C

      HINT: 

      Codes other than DTC B1642 and B1647 may be output at this time, but they are not related to this check.

    A → See step   28 

    B → See step   15 

    C: Go to next step 

  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 center airbag sensor and side airbag sensor RH.

      OK

      The connectors are properly connected.

    NG → CONNECT CONNECTORS PROPERLY 

    OK: Go to next step 

  3. CHECK CONNECTORS 
    1. Disconnect the connectors from the center airbag sensor and side airbag sensor RH.
    2. Check that the connectors (on the center airbag sensor side and side airbag sensor RH side) are not damaged.

      OK

      The connectors are not deformed or damaged.

      Fig 1: Identifying Rear Airbag Sensor RH
      GTY213485Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Side Airbag Sensor RH
      *2 Center Airbag Sensor

    NG → REPLACE NO. 2 FLOOR WIRE 

    OK: Go to next step 

  4. CHECK NO. 2 FLOOR WIRE (CENTER AIRBAG SENSOR - SIDE AIRBAG SENSOR RH) 
    1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
      Fig 2: Checking No. 2 Floor Wire (Center Airbag Sensor - Side Airbag Sensor RH)
      GTY311507Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Side Airbag Sensor RH *2 Center Airbag Sensor
      *3 No. 2 Floor Wire *4 Connector C
      *5 Connector B *6 Service Wire
      *a Rear view of wire harness connector
      (to Side Airbag Sensor RH)      		 *b Rear view of wire harness connector
      (to Center Airbag Sensor)
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      J4-4 (BBR+) - Body ground Ignition switch ON Below 1 V
      J4-3 (BBR-) - Body ground Ignition switch ON Below 1 V
    3. Turn the ignition switch off.
    4. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    5. Using a service wire, connect terminals 8 (BBR+) and 11 (BBR-) of connector B.
      NOTE:

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

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      J4-4 (BBR+) - J4-3 (BBR-) Always Below 1 Ω
    7. Disconnect the service wire from connector B.
    8. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J4-4 (BBR+) - J4-3 (BBR-) Always 1 MΩ or higher
      J4-4 (BBR+) - Body ground Always 1 MΩ or higher
      J4-3 (BBR-) - Body ground Always 1 MΩ or higher

    NG → REPLACE NO. 2 FLOOR WIRE 

    OK: Go to next step 

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

      OK

      The connector is properly connected.

    NG → CONNECT CONNECTORS PROPERLY 

    OK: Go to next step 

  6. CHECK CONNECTORS 
    1. Disconnect the connector from the rear airbag sensor RH.
    2. Check that the connector (on the rear airbag sensor RH side) is not damaged.

      OK

      The connector is not deformed or damaged.

      Fig 3: Checking Connectors
      GTY314037Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Rear Airbag Sensor RH
      *2 Side Airbag Sensor RH

    NG → REPLACE NO. 2 FLOOR WIRE 

    OK: Go to next step 

  7. CHECK REAR AIRBAG SENSOR RH CIRCUIT 
    1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
      Fig 4: Checking Rear Airbag Sensor (RH) Circuit
      GTY311339Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Rear Airbag Sensor RH *2 Side Airbag Sensor RH
      *3 Connector C *4 Connector B
      *5 Service Wire *6 No. 2 Floor Wire
      *a Rear view of wire harness connector
      (to Rear Airbag Sensor RH)      		 *b Rear view of wire harness connector
      (to Side Airbag Sensor RH)
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      J4-1 (BCR+) - Body ground Ignition switch ON Below 1 V
      J4-2 (BCR-) - Body ground Ignition switch ON Below 1 V
    3. Turn the ignition switch off.
    4. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    5. Using a service wire, connect terminals 4 (BCR+) and 3 (BCR-) of connector C.
      NOTE:

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

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      J4-1 (BCR+) - J4-2 (BCR-) Always Below 1 Ω
    7. Disconnect the service wire from connector C.
    8. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J4-1 (BCR+) - J4-2 (BCR-) Always 1 MΩ or higher
      J4-1 (BCR+) - Body ground Always 1 MΩ or higher
      J4-2 (BCR-) - Body ground Always 1 MΩ or higher

    NG → REPLACE NO. 2 FLOOR WIRE 

    OK: Go to next step 

  8. CHECK CONNECTION OF CONNECTORS 
    1. Check that the connector is properly connected to the door side airbag sensor RH.

      OK

      The connector is properly connected.

    NG → CONNECT CONNECTORS PROPERLY 

    OK: Go to next step 

  9. CHECK CONNECTORS 
    1. Disconnect the connector from the door side airbag sensor RH.
    2. Check that the connector (on the door side airbag sensor RH side) is not damaged.

      OK

      The connector is not deformed or damaged.

      Fig 5: Checking Connectors
      GTY224988Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor RH
      *2 Rear Airbag Sensor RH

    NG → REPLACE HARNESS AND CONNECTOR 

    OK: Go to next step 

  10. CHECK DOOR SIDE AIRBAG SENSOR RH CIRCUIT 
    1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
      Fig 6: Checking Door Side Airbag Sensor RH Circuit
      GTY313712Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor RH *2 Rear Airbag Sensor RH
      *3 Connector E *4 Connector B
      *5 Service Wire - -
      *a Front view of wire harness connector
      (to Door Side Airbag Sensor RH)      		 *b Rear view of wire harness connector
      (to Rear Airbag Sensor RH)
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      J5-1 (BDR+) - Body ground Ignition switch ON Below 1 V
      J5-2 (BDR-) - Body ground Ignition switch ON Below 1 V
    3. Turn the ignition switch off.
    4. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    5. Using a service wire, connect terminals 2 (BDR+) and 1 (BDR-) of connector E.
      NOTE:

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

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      J5-1 (BDR+) - J5-2 (BDR-) Always Below 1 Ω
    7. Disconnect the service wire from connector E.
    8. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J5-1 (BDR+) - J5-2 (BDR-) Always 1 MΩ or higher
      J5-1 (BDR+) - Body ground Always 1 MΩ or higher
      J5-2 (BDR-) - Body ground Always 1 MΩ or higher

    NG → See step   14 

    OK: Go to next step 

  11. CHECK SIDE AIRBAG SENSOR RH 
    1. Connect the connectors to the center airbag sensor, rear airbag sensor RH and door side airbag sensor.
      Fig 7: Identifying Rear Floor Side Airbag Sensor
      GTY223657Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Interchange the side 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 stored in memory. Refer to DTC CHECK / CLEAR .
    6. Turn the ignition switch off.
    7. Turn the ignition switch to ON, and wait for at least 90 seconds.
    8. Check for DTCs. Refer to DTC CHECK / CLEAR .
      RESULT

      Result Proceed to
      DTC B1642 and B1647 are not output A
      DTC B1647 is output B
      DTC B1642 is output C

      HINT: 

      Codes other than DTC B1642 and B1647 may be output at this time, but they are not related to this check.

      TEXT IN ILLUSTRATION

      *1 Side Airbag Sensor LH
      *2 Center Airbag Sensor
    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 LH and RH to their original positions and connect the connectors to them.

    A → See step   28 

    B → See step   30 

    C: Go to next step 

  12. CHECK REAR AIRBAG SENSOR RH 
    1. Interchange the rear airbag sensor RH with LH and connect the connectors to them.
      Fig 8: Checking Rear Airbag Sensor LH
      GTY225600Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
    3. Turn the ignition switch to ON, and wait for at least 60 seconds.
    4. Clear the DTCs stored in memory. Refer to DTC CHECK / CLEAR .
    5. Turn the ignition switch off.
    6. Turn the ignition switch to ON, and wait for at least 90 seconds.
    7. Check for DTCs. Refer to DTC CHECK / CLEAR .
      RESULT

      Result Proceed to
      DTC B1642 and B1647 are not output A
      DTC B1647 is output B
      DTC B1642 is output C

      HINT: 

      Codes other than DTC B1642 and B1647 may be output at this time, but they are not related to this check.

      TEXT IN ILLUSTRATION

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

    A → See step   28 

    B → See step   29 

    C: Go to next step 

  13. CHECK DOOR SIDE AIRBAG SENSOR RH 
    1. Interchange the door side airbag sensor RH with LH and connect the connectors to them.
      Fig 9: Identifying Side Airbag Sensor RH
      GTY213957Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
    3. Turn the ignition switch to ON, and wait for at least 60 seconds.
    4. Clear the DTCs stored in memory. Refer to DTC CHECK / CLEAR .
    5. Turn the ignition switch off.
    6. Turn the ignition switch to ON, and wait for at least 90 seconds.
    7. Check for DTCs. Refer to DTC CHECK / CLEAR .
      RESULT

      Result Proceed to
      DTC B1642 and B1647 are not output A
      DTC B1647 is output B
      DTC B1642 is output C

      HINT: 

      Codes other than DTC B1642 and B1647 may be output at this time, but they are not related to this check.

      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor LH
      *2 Rear Airbag Sensor
    8. Turn the ignition switch off.
    9. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    10. Return the door side airbag sensor LH and RH to their original positions and connect the connectors to them.

    A → See step   28 

    B → See step   37 

    C → See step   31 

  14. CHECK NO. 2 FLOOR WIRE (REAR AIRBAG SENSOR RH - FRONT DOOR WIRE RH) 
    1. Disconnect the floor wire connector from the front door wire RH.
      Fig 10: Checking No. 2 Floor Wire (Rear Airbag Sensor RH - Front Door Wire RH)
      GTY313677Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor RH *2 Rear Airbag Sensor RH
      *3 Front Door Wire RH *4 No. 2 Floor Wire
      *5 Connector C *6 Connector B
      *7 Service Wire - -
      *a Front view of wire harness connector
      (to Front Door Wire RH)      		 *b Rear view of wire harness connector
      (to Rear Airbag Sensor RH)
    2. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      J5-1 (BDR+) - Body ground Ignition switch ON Below 1 V
      J5-2 (BDR-) - 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 2 (BDR+) and 1 (BDR-) of connector C.
      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
      J5-1 (BDR+) - J5-2 (BDR-) Always Below 1 Ω
    8. Disconnect the service wire from connector C.
    9. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      J5-1 (BDR+) - J5-2 (BDR-) Always 1 MΩ or higher
      J5-1 (BDR+) - Body ground Always 1 MΩ or higher
      J5-2 (BDR-) - Body ground Always 1 MΩ or higher

    NG → REPLACE NO. 2 FLOOR WIRE 

    OK → See step   33 

  15. 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 center airbag sensor and side airbag sensor LH.

      OK

      The connectors are properly connected.

    NG → CONNECT CONNECTORS PROPERLY 

    OK: Go to next step 

  16. CHECK CONNECTORS 
    1. Disconnect the connectors from the center airbag sensor and side airbag sensor LH.
    2. Check that the connectors (on the center airbag sensor side and side airbag sensor LH side) are not damaged.

      OK

      The connectors are not deformed or damaged.

      Fig 11: Checking Connectors
      GTY313358Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Side Airbag Sensor LH
      *2 Center Airbag Sensor

    NG → REPLACE FLOOR WIRE 

    OK: Go to next step 

  17. CHECK FLOOR WIRE (CENTER AIRBAG SENSOR - SIDE AIRBAG SENSOR LH) 
    1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
      Fig 12: Checking Floor Wire (Center Airbag Sensor - Side Airbag Sensor LH)
      GTY310439Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Side Airbag Sensor LH *2 Center Airbag Sensor
      *3 Floor Wire *4 Connector C
      *5 Connector B *6 Service Wire
      *a Rear view of wire harness connector
      (to Side Airbag Sensor LH)      		 *b Rear view of wire harness connector
      (to Center Airbag Sensor)
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      H6-4 (BBL+) - Body ground Ignition switch ON Below 1 V
      H6-3 (BBL-) - Body ground Ignition switch ON Below 1 V
    3. Turn the ignition switch off.
    4. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    5. Using a service wire, connect terminals 8 (BBL+) and 15 (BBL-) of connector B.
      NOTE:

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

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      H6-4 (BBL+) - H6-3 (BBL-) Always Below 1 Ω
    7. Disconnect the service wire from connector B.
    8. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H6-4 (BBL+) - H6-3 (BBL-) Always 1 MΩ or higher
      H6-4 (BBL+) - Body ground Always 1 MΩ or higher
      H6-3 (BBL-) - Body ground Always 1 MΩ or higher

    NG → REPLACE FLOOR WIRE 

    OK: Go to next step 

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

      OK

      The connector is properly connected.

    NG → CONNECT CONNECTORS PROPERLY 

    OK: Go to next step 

  19. CHECK CONNECTORS 
    1. Disconnect the connector from the rear airbag sensor LH.
    2. Check that the connector (on the rear airbag sensor LH side) is not damaged.

      OK

      The connector is not deformed or damaged.

      Fig 13: Checking Connectors
      GTY314037Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Rear Airbag Sensor LH
      *2 Side Airbag Sensor LH

    NG → REPLACE FLOOR WIRE 

    OK: Go to next step 

  20. CHECK REAR AIRBAG SENSOR LH CIRCUIT 
    1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
      Fig 14: Checking Rear Airbag Sensor (LH) Circuit
      GTY311207Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Rear Airbag Sensor LH *2 Side Airbag Sensor LH
      *3 Connector C *4 Connector B
      *5 Service Wire *6 Floor Wire
      *a Rear view of wire harness connector
      (to Rear Airbag Sensor LH)      		 *b Rear view of wire harness connector
      (to Side Airbag Sensor LH)
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      H6-1 (BCL+) - Body ground Ignition switch ON Below 1 V
      H6-2 (BCL-) - Body ground Ignition switch ON Below 1 V
    3. Turn the ignition switch off.
    4. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    5. Using a service wire, connect terminals 4 (BCL+) and 3 (BCL-) of connector C.
      NOTE:

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

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      H6-1 (BCL+) - H6-2 (BCL-) Always Below 1 Ω
    7. Disconnect the service wire from connector C.
    8. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H6-1 (BCL+) - H6-2 (BCL-) Always 1 MΩ or higher
      H6-1 (BCL+) - Body ground Always 1 MΩ or higher
      H6-2 (BCL-) - Body ground Always 1 MΩ or higher

    NG → REPLACE FLOOR WIRE 

    OK: Go to next step 

  21. CHECK CONNECTION OF CONNECTORS 
    1. Check that the connector is properly connected to the door side airbag sensor LH.

      OK

      The connector is properly connected.

    NG → CONNECT CONNECTORS PROPERLY 

    OK: Go to next step 

  22. CHECK CONNECTORS 
    1. Disconnect the connector from the door side airbag sensor LH.
    2. Check that the connector (on the door side airbag sensor LH side) is not damaged.

      OK

      The connector is not deformed or damaged.

      Fig 15: Checking Connectors
      GTY224988Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor LH
      *2 Rear Airbag Sensor LH

    NG → REPLACE HARNESS AND CONNECTOR 

    OK: Go to next step 

  23. CHECK DOOR SIDE AIRBAG SENSOR LH CIRCUIT 
    1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
      Fig 16: Checking Door Side Airbag Sensor (LH) Circuit
      GTY314393Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor LH *2 Rear Airbag Sensor LH
      *3 Connector E *4 Connector B
      *5 Service Wire - -
      *a Front view of wire harness connector
      (to Door Side Airbag Sensor LH)      		 *b Rear view of wire harness connector
      (to Rear Airbag Sensor LH)
    2. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      H7-1 (BDL+) - Body ground Ignition switch ON Below 1 V
      H7-2 (BDL-) - Body ground Ignition switch ON Below 1 V
    3. Turn the ignition switch off.
    4. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    5. Using a service wire, connect terminals 2 (BDL+) and 1 (BDL-) of connector E.
      NOTE:

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

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

      Standard Resistance

      Tester Connection Condition Specified Condition
      H7-1 (BDL+) - H7-2 (BDL-) Always Below 1 Ω
    7. Disconnect the service wire from connector E.
    8. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H7-1 (BDL+) - H7-2 (BDL-) Always 1 MΩ or higher
      H7-1 (BDL+) - Body ground Always 1 MΩ or higher
      H7-2 (BDL-) - Body ground Always 1 MΩ or higher

    NG → See step   27 

    OK: Go to next step 

  24. CHECK SIDE AIRBAG SENSOR LH 
    1. Connect the connectors to the center airbag sensor, rear airbag sensor LH and door side airbag sensor.
      Fig 17: Checking Side Airbag Sensor (LH)
      GTY312494Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Interchange the side 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 stored in memory. Refer to DTC CHECK / CLEAR .
    6. Turn the ignition switch off.
    7. Turn the ignition switch to ON, and wait for at least 90 seconds.
    8. Check for DTCs. Refer to DTC CHECK / CLEAR .
      RESULT

      Result Proceed to
      DTC B1642 and B1647 are not output A
      DTC B1642 is output B
      DTC B1647 is output C

      HINT: 

      Codes other than DTC B1642 and B1647 may be output at this time, but they are not related to this check.

      TEXT IN ILLUSTRATION

      *1 Side Airbag Sensor RH
      *2 Center Airbag Sensor
    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 LH and RH to their original positions and connect the connectors to them.

    A → See step   35 

    B → See step   32 

    C: Go to next step 

  25. CHECK REAR AIRBAG SENSOR LH 
    1. Interchange the rear airbag sensor LH with RH and connect the connectors to them.
      Fig 18: Checking Rear Airbag Sensor LH
      GTY225600Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
    3. Turn the ignition switch to ON, and wait for at least 60 seconds.
    4. Clear the DTCs stored in memory. Refer to DTC CHECK / CLEAR .
    5. Turn the ignition switch off.
    6. Turn the ignition switch to ON, and wait for at least 90 seconds.
    7. Check for DTCs. Refer to DTC CHECK / CLEAR .
      RESULT

      Result Proceed to
      DTC B1642 and B1647 are not output A
      DTC B1642 is output B
      DTC B1647 is output C

      HINT: 

      Codes other than DTC B1642 and B1647 may be output at this time, but they are not related to this check.

      TEXT IN ILLUSTRATION

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

    A → See step   35 

    B → See step   36 

    C: Go to next step 

  26. CHECK DOOR SIDE AIRBAG SENSOR LH 
    1. Interchange the door side airbag sensor LH with RH and connect the connectors to them.
      Fig 19: Identifying Side Airbag Sensor RH
      GTY213957Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
    2. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
    3. Turn the ignition switch to ON, and wait for at least 60 seconds.
    4. Clear the DTCs stored in memory. Refer to DTC CHECK / CLEAR .
    5. Turn the ignition switch off.
    6. Turn the ignition switch to ON, and wait for at least 90 seconds.
    7. Check for DTCs. Refer to DTC CHECK / CLEAR .
      RESULT

      Result Proceed to
      DTC B1642 and B1647 are not output A
      DTC B1642 is output B
      DTC B1647 is output C

      HINT: 

      Codes other than DTC B1642 and B1647 may be output at this time, but they are not related to this check.

      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor RH
      *2 Rear Airbag Sensor LH
    8. Turn the ignition switch off.
    9. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
    10. Return the door side airbag sensor RH and LH to their original positions and connect the connectors to them.

    A → See step   35 

    B → See step   38 

    C → See step   39 

  27. CHECK FLOOR WIRE (REAR AIRBAG SENSOR LH - FRONT DOOR WIRE LH) 
    1. Disconnect the No. 2 floor wire connector from the front door wire LH.
      Fig 20: Checking Floor Wire (Rear Airbag Sensor LH - Front Door Wire LH)
      GTY313704Courtesy of © TOYOTA, LICENSE AGREEMENT TMS1002
      TEXT IN ILLUSTRATION

      *1 Door Side Airbag Sensor LH *2 Rear Airbag Sensor LH
      *3 Front Door Wire LH *4 Floor Wire
      *5 Connector C *6 Connector B
      *7 Service Wire - -
      *a Front view of wire harness connector
      (to Front Door Wire LH)      		 *b Rear view of wire harness connector
      (to Rear Airbag Sensor LH)
    2. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
    3. Measure the voltage according to the value(s) in the table below.

      Standard Voltage

      Tester Connection Switch Condition Specified Condition
      H7-1 (BDL+) - Body ground Ignition switch ON Below 1 V
      H7-2 (BDL-) - 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 2 (BDL+) and 1 (BDL-) of connector C.
      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
      H7-1 (BDL+) - H7-2 (BDL-) Always Below 1 Ω
    8. Disconnect the service wire from connector C.
    9. Measure the resistance according to the value(s) in the table below.

      Standard Resistance

      Tester Connection Condition Specified Condition
      H7-1 (BDL+) - H7-2 (BDL-) Always 1 MΩ or higher
      H7-1 (BDL+) - Body ground Always 1 MΩ or higher
      H7-2 (BDL-) - Body ground Always 1 MΩ or higher

    NG → REPLACE FLOOR WIRE 

    OK → See step   34 

  28. USE SIMULATION METHOD TO CHECK. Refer to  DIAGNOSIS SYSTEM 
  29. REPLACE REAR AIRBAG SENSOR RH. Refer to  REMOVAL 
  30. REPLACE SIDE AIRBAG SENSOR ASSEMBLY RH. Refer to  REMOVAL 
  31. REPLACE CENTER AIRBAG SENSOR ASSEMBLY. Refer to  REMOVAL 
  32. REPLACE SIDE AIRBAG SENSOR ASSEMBLY LH. Refer to  REMOVAL 
  33. REPLACE FRONT DOOR WIRE RH. Refer to  DISASSEMBLY 
  34. REPLACE FRONT DOOR WIRE LH. Refer to  DISASSEMBLY 
  35. USE SIMULATION METHOD TO CHECK. Refer to  DIAGNOSIS SYSTEM 
  36. REPLACE REAR AIRBAG SENSOR LH. Refer to  REMOVAL 
  37. REPLACE DOOR SIDE AIRBAG SENSOR RH. Refer to  REMOVAL 
  38. REPLACE DOOR SIDE AIRBAG SENSOR LH. Refer to  REMOVAL 
  39. REPLACE CENTER AIRBAG SENSOR ASSEMBLY. Refer to  REMOVAL 
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