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AIRBAG SYSTEM(w/ VSC), Diagnostic DTC:B1647/82

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DTC Code DTC Name
B1647/82 Lost Communication with Side Satellite Sensor Bus LH
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DESCRIPTION

The side collision sensor LH circuit (to determine deployment of the front seat side airbag assembly LH and curtain shield airbag assembly LH) is composed of the airbag sensor assembly, side airbag sensor assembly LH (for 5 door), door side airbag sensor LH (for 3 door) and No. 2 side airbag sensor assembly LH.

The side airbag sensor assembly LH (for 5 door), door side airbag sensor LH (for 3 door) and No. 2 side airbag sensor assembly LH detect impacts to the vehicle and send signals to the airbag sensor assembly to determine if the airbag should be deployed.

This DTC is stored when a malfunction is detected for the side collision sensor LH circuit (to determine deployment of the front seat side airbag assembly LH and curtain shield airbag assembly LH).

DTC No. DTC Detection Condition Trouble Area
B1647/82

  • The airbag sensor assembly receives a line short circuit signal, an open circuit signal, a short circuit to ground signal or a short circuit to B+ signal in the side collision sensor LH circuit (to determine deployment of the front seat side airbag assembly LH and curtain shield airbag assembly LH).

  • Side airbag sensor assembly LH malfunction (for 5 door)

  • Door side airbag sensor LH malfunction (for 3 door)

  • No. 2 side airbag sensor assembly LH malfunction

  • Airbag sensor assembly malfunction

  • Floor wire

  • Front door wire LH

  • Side airbag sensor assembly LH (for 5 door)

  • Door side airbag sensor LH (for 3 door)

  • No. 2 side airbag sensor assembly LH

  • Airbag sensor assembly
A01VI1PE12
Table 2. for 5 Door
*a Side Airbag Sensor Assembly LH
*b No. 2 Side Airbag Sensor Assembly LH
*c Airbag Sensor Assembly
Table 1. for 3 Door *a No. 2 Side Airbag Sensor Assembly LH *b Door Side Airbag Sensor LH *c Airbag Sensor Assembly
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WIRING DIAGRAM

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PROCEDURE


  1. Click here

    SYSTEM CHECK


    1. Check the vehicle specifications.

      Table 3. Result
      Result Proceed to
      for 3 Door A
      for 5 Door B

  2. Click here

    CHECK CONNECTORS


    1. Turn the ignition switch off.

    2. Disconnect the cable from the negative (-) battery terminal.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    3. Check that the connectors are properly connected to the airbag sensor assembly, door side airbag sensor LH and No. 2 side airbag sensor assembly LH.

      OK
      The connectors are properly connected.
      Tip:

      If the connectors are not connected securely, reconnect the connectors and proceed to the next inspection.

    4. Disconnect the connectors from the airbag sensor assembly, door side airbag sensor LH and No. 2 side airbag sensor assembly LH.

    5. Check that the terminals of connectors are not damaged.

      OK
      The terminals are not deformed or damaged.

  3. Click here

    CHECK FLOOR WIRE (OPEN)


    1. A01VEMFE02

      Using a service wire, connect terminals 23 (BBL-) and 24 (BBL+) of connector B.

      Table 4. Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly LH *2 Airbag Sensor Assembly
      *3 Floor Wire *4 Connector B
      *5 Connector C *6 Service Wire
      *a

      Front view of wire harness connector

      (to Airbag Sensor Assembly)

      		 *b

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly LH)
      Note:

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K45-3 (BCL-) - K45-4 (BCL+) Always Below 1 Ω

  4. Click here

    CHECK FLOOR WIRE (SHORT)


    1. A01VIWME02

      Disconnect the service wire from connector B.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K45-3 (BCL-) - K45-4 (BCL+) Always 1 MΩ or higher
      Table 5. Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly LH
      *2 Airbag Sensor Assembly
      *3 Floor Wire
      *4 Connector C
      *a

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly LH)

  5. Click here

    CHECK FLOOR WIRE (SHORT TO B+)


    1. A01VIWME02

      Connect the cable to the negative (-) battery terminal.

    2. Turn the ignition switch to ON.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      K45-3 (BCL-) - Body ground Ignition switch ON Below 1 V
      K45-4 (BCL+) - Body ground Ignition switch ON Below 1 V
      Table 6. Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly LH
      *2 Airbag Sensor Assembly
      *3 Floor Wire
      *4 Connector C
      *a

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly LH)

  6. Click here

    CHECK FLOOR WIRE (SHORT TO GROUND)


    1. A01VIWME02

      Turn the ignition switch off.

    2. Disconnect the cable from the negative (-) battery terminal.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K45-3 (BCL-) - Body ground Always 1 MΩ or higher
      K45-4 (BCL+) - Body ground Always 1 MΩ or higher
      Table 7. Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly LH
      *2 Airbag Sensor Assembly
      *3 Floor Wire
      *4 Connector C
      *a

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly LH)

  7. Click here

    CHECK FLOOR WIRE AND FRONT DOOR WIRE LH (OPEN)


    1. A01VLFTE01

      Using the service wire, connect terminals 2 (BDL+) and 1 (BDL-) of connector E.

      Table 8. Text in Illustration
      *1 Door Side Airbag Sensor LH *2 No. 2 Side Airbag Sensor Assembly LH
      *3 Front Door Wire LH *4 Floor Wire
      *5 Connector B *6 Connector E
      *7 Service Wire - -
      *a

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly LH)

      		 *b

      Front view of wire harness connector

      (to Door Side Airbag Sensor LH)
      Note:

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K45-1 (BDL+) - K45-2 (BDL-) Always Below 1 Ω

  8. Click here

    CHECK FLOOR WIRE AND FRONT DOOR WIRE LH (SHORT)


    1. A01VIOME02

      Disconnect the service wire from connector E.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K45-1 (BDL+) - K45-2 (BDL-) Always 1 MΩ or higher
      Table 9. Text in Illustration
      *1 Door Side Airbag Sensor LH
      *2 No. 2 Side Airbag Sensor Assembly LH
      *3 Front Door Wire LH
      *4 Floor Wire
      *5 Connector B
      *a

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly LH)

  9. Click here

    CHECK FLOOR WIRE AND FRONT DOOR WIRE LH (SHORT TO B+)


    1. A01VIOME02

      Connect the cable to the negative (-) battery terminal.

    2. Turn the ignition switch to ON.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      K45-1 (BDL+) - Body ground Ignition switch ON Below 1 V
      K45-2 (BDL-) - Body ground Ignition switch ON Below 1 V
      Table 10. Text in Illustration
      *1 Door Side Airbag Sensor LH
      *2 No. 2 Side Airbag Sensor Assembly LH
      *3 Front Door Wire LH
      *4 Floor Wire
      *5 Connector B
      *a

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly LH)

  10. Click here

    CHECK FLOOR WIRE AND FRONT DOOR WIRE LH (SHORT TO GROUND)


    1. A01VIOME02

      Turn the ignition switch off.

    2. Disconnect the cable from the negative (-) battery terminal.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K45-1 (BDL+) - Body ground Always 1 MΩ or higher
      K45-2 (BDL-) - Body ground Always 1 MΩ or higher
      Table 11. Text in Illustration
      *1 Door Side Airbag Sensor LH
      *2 No. 2 Side Airbag Sensor Assembly LH
      *3 Front Door Wire LH
      *4 Floor Wire
      *5 Connector B
      *a

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly LH)

  11. Click here

    CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY LH


    1. A01VEVWE01

      Connect the connectors to the door side airbag sensor LH and airbag sensor assembly.

    2. Interchange the No. 2 side airbag sensor assembly LH with the No. 2 side airbag sensor assembly RH and connect the connectors to them.

    3. Connect the cable to the negative (-) battery terminal.

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

    5. Clear the DTCs stored in the memory (Click here).

    6. Turn the ignition switch off.

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

    8. Check for DTCs (Click here).

      Table 12. Result
      Result Proceed to
      DTC B1647/82 is output. A
      DTC B1642/81 is output. B
      DTC B1642/81 or B1647/82 is not output. C
      Table 13. Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly RH
      *2 Airbag Sensor Assembly
      Tip:

      Codes other than DTCs B1642/81 and B1647/82 may be output at this time, but they are not related to this check.

    9. Turn the ignition switch off.

    10. Disconnect the cable from the negative (-) battery terminal.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    11. Return the No. 2 side airbag sensor assembly LH and the No. 2 side airbag sensor assembly RH to their original positions and connect the connectors to them.


  12. Click here

    CHECK DOOR SIDE AIRBAG SENSOR LH


    1. A01VKDLE03

      Interchange the door side airbag sensor LH with the door side airbag sensor RH and connect the connectors to them.

    2. Connect the cable to the negative (-) battery terminal.

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

    4. Clear the DTCs stored in the memory (Click here).

    5. Turn the ignition switch off.

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

    7. Check for DTCs (Click here).

      Table 14. Result
      Result Proceed to
      DTC B1642/81 or B1647/82 is not output. A
      DTC B1647/82 is output. B
      DTC B1642/81 is output. C
      Table 15. Text in Illustration
      *1 Door Side Airbag Sensor RH
      *2 No. 2 Side Airbag Sensor Assembly LH
      Tip:

      Codes other than DTCs B1642/81 and B1647/82 may be output at this time, but they are not related to this check.

    8. Turn the ignition switch off.

    9. Disconnect the cable from the negative (-) battery terminal.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    10. Return the door side airbag sensor LH and the door side airbag sensor RH to their original positions and connect the connectors to them.


  13. Click here

    CHECK FRONT DOOR WIRE LH (OPEN)


    1. A01VLXPE01

      Disconnect the floor wire connector from the front door wire LH.

      Table 16. Text in Illustration
      *1 Door Side Airbag Sensor LH *2 No. 2 Side Airbag Sensor Assembly LH
      *3 Front Door Wire LH *4 Floor Wire
      *5 Connector D *6 Connector E
      *7 Service Wire - -
      *a

      Front view of wire harness connector

      (to Floor Wire)

      		 *b

      Front view of wire harness connector

      (to Door Side Airbag Sensor LH)
      Tip:

      The service wire has already been inserted into connector E.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      HK2-1 (BDL+) - HK2-2 (BDL-) Always Below 1 Ω

    • OK

      REPLACE FLOOR WIRE

    • NG

      REPLACE FRONT DOOR WIRE LH

  14. Click here

    CHECK FRONT DOOR WIRE LH (SHORT)


    1. A01VFY0E02

      Disconnect the floor wire connector from the front door wire LH.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      HK2-1 (BDL+) - HK2-2 (BDL-) Always 1 MΩ or higher
      Table 17. Text in Illustration
      *1 Door Side Airbag Sensor LH
      *2 No. 2 Side Airbag Sensor Assembly LH
      *3 Front Door Wire LH
      *4 Floor Wire
      *5 Connector D
      *a

      Front view of wire harness connector

      (to Floor Wire)

    • OK

      REPLACE FLOOR WIRE

    • NG

      REPLACE FRONT DOOR WIRE LH

  15. Click here

    CHECK FRONT DOOR WIRE LH (SHORT TO B+)


    1. Turn the ignition switch off.

    2. A01VFY0E02

      Disconnect the cable from the negative (-) battery terminal.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    3. Disconnect the front door wire connector from the floor wire.

    4. Connect the cable to the negative (-) battery terminal.

    5. Turn the ignition switch to ON.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      HK2-1 (BDL+) - Body ground Ignition switch ON Below 1 V
      HK2-2 (BDL-) - Body ground Ignition switch ON Below 1 V
      Table 18. Text in Illustration
      *1 Door Side Airbag Sensor LH
      *2 No. 2 Side Airbag Sensor Assembly LH
      *3 Front Door Wire LH
      *4 Floor Wire
      *5 Connector D
      *a

      Front view of wire harness connector

      (to Floor Wire)

    • OK

      REPLACE FLOOR WIRE

    • NG

      REPLACE FRONT DOOR WIRE LH

  16. Click here

    CHECK FRONT DOOR WIRE LH (SHORT TO GROUND)


    1. A01VFY0E02

      Disconnect the front door wire connector from the floor wire.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      HK2-1 (BDL+) - Body ground Always 1 MΩ or higher
      HK2-2 (BDL-) - Body ground Always 1 MΩ or higher
      Table 19. Text in Illustration
      *1 Door Side Airbag Sensor LH
      *2 No. 2 Side Airbag Sensor Assembly LH
      *3 Front Door Wire LH
      *4 Floor Wire
      *5 Connector D
      *a

      Front view of wire harness connector

      (to Floor Wire)

    • OK

      REPLACE FLOOR WIRE

    • NG

      REPLACE FRONT DOOR WIRE LH

  17. Click here

    CHECK FLOOR WIRE (OPEN)


    1. A01VG7HE02

      Using the service wire, connect terminals 2 (BCL+) and 1 (BCL-) of connector C.

      Table 20. Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly LH *2 Side Airbag Sensor Assembly LH
      *3 Floor Wire *4 Connector B
      *5 Connector C *6 Service Wire
      *a

      Front view of wire harness connector

      (to Side Airbag Sensor Assembly LH)

      		 *b

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly LH)
      Note:

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K21-1 (BCL+) - K21-2 (BCL-) Always Below 1 Ω

  18. Click here

    CHECK FLOOR WIRE (SHORT)


    1. A01VFOFE02

      Disconnect the service wire from connector C.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K21-1 (BCL+) - K21-2 (BCL-) Always 1 MΩ or higher
      Table 21. Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly LH
      *2 Side Airbag Sensor Assembly LH
      *3 Floor Wire
      *4 Connector B
      *a

      Front view of wire harness connector

      (to Side Airbag Sensor Assembly LH)

  19. Click here

    CHECK FLOOR WIRE (SHORT TO B+)


    1. A01VFOFE02

      Connect the cable to the negative (-) battery terminal.

    2. Turn the ignition switch to ON.

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

      Standard Voltage
      Tester Connection Switch Condition Specified Condition
      K21-1 (BCL+) - Body ground Ignition switch ON Below 1 V
      K21-2 (BCL-) - Body ground Ignition switch ON Below 1 V
      Table 22. Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly LH
      *2 Side Airbag Sensor Assembly LH
      *3 Floor Wire
      *4 Connector B
      *a

      Front view of wire harness connector

      (to Side Airbag Sensor Assembly LH)

  20. Click here

    CHECK FLOOR WIRE (SHORT TO GROUND)


    1. A01VFOFE02

      Turn the ignition switch off.

    2. Disconnect the cable from the negative (-) battery terminal.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      K21-1 (BCL+) - Body ground Always 1 MΩ or higher
      K21-2 (BCL-) - Body ground Always 1 MΩ or higher
      Table 23. Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly LH
      *2 Side Airbag Sensor Assembly LH
      *3 Floor Wire
      *4 Connector B
      *a

      Front view of wire harness connector

      (to Side Airbag Sensor Assembly LH)

  21. Click here

    CHECK SIDE AIRBAG SENSOR ASSEMBLY LH


    1. A01VEVWE01

      Connect the connectors to the No. 2 side airbag sensor assembly LH and airbag sensor assembly.

    2. Interchange the side airbag sensor assembly LH with the side airbag sensor assembly RH and connect the connectors to them.

    3. Connect the cable to the negative (-) battery terminal.

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

    5. Clear the DTCs stored in the memory (Click here).

    6. Turn the ignition switch off.

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

    8. Check for DTCs (Click here).

      Table 24. Result
      Result Proceed to
      DTC B1647/82 is output. A
      DTC B1642/81 is output. B
      DTC B1642/81 or B1647/82 is not output. C
      Table 25. Text in Illustration
      *1 Side Airbag Sensor Assembly RH
      *2 Airbag Sensor Assembly
      Tip:

      Codes other than DTCs B1642/81 and B1647/82 may be output at this time, but they are not related to this check.

    9. Turn the ignition switch off.

    10. Disconnect the cable from the negative (-) battery terminal.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    11. Return the side airbag sensor assembly LH and the side airbag sensor assembly RH to their original positions and connect the connectors to them.


  22. Click here

    CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY LH


    1. A01VFE5E16

      Interchange the No. 2 side airbag sensor assembly LH with the No. 2 side airbag sensor assembly RH and connect the connectors to them.

    2. Connect the cable to the negative (-) battery terminal.

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

    4. Clear the DTCs stored in the memory (Click here).

    5. Turn the ignition switch off.

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

    7. Check for DTCs (Click here).

      Table 26. Result
      Result Proceed to
      DTC B1642/81 or B1647/82 is not output. A
      DTC B1647/82 is output. B
      DTC B1642/81 is output. C
      Table 27. Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly RH
      *2 Side Airbag Sensor Assembly LH
      Tip:

      Codes other than DTCs B1642/81 and B1647/82 may be output at this time, but they are not related to this check.

    8. Turn the ignition switch off.

    9. Disconnect the cable from the negative (-) battery terminal.

      CAUTION:

      Wait at least 90 seconds after disconnecting the cable from the negative (-) battery terminal to disable the SRS system.

    10. Return the No. 2 side airbag sensor assembly LH and the No. 2 side airbag sensor assembly RH to their original positions and connect the connectors to them.


    • A

      USE SIMULATION METHOD TO CHECK (Click here)

    • B

      REPLACE AIRBAG SENSOR ASSEMBLY (Click here)

    • C

      REPLACE NO. 2 SIDE AIRBAG SENSOR ASSEMBLY LH (Click here)