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AIRBAG SYSTEM(w/ VSC), Diagnostic DTC:B1642/81

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DTC Code DTC Name
B1642/81 Lost Communication with Side Satellite Sensor Bus RH
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DESCRIPTION

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

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

DTC No. DTC Detection Condition Trouble Area
B1642/81

  • 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 RH circuit (to determine deployment of the front seat side airbag assembly RH and curtain shield airbag assembly RH).

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

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

  • No. 2 side airbag sensor assembly RH malfunction

  • Airbag sensor assembly malfunction

  • Floor wire

  • Front door wire RH

  • Side airbag sensor assembly RH (for 5 door)

  • Door side airbag sensor RH (for 3 door)

  • No. 2 side airbag sensor assembly RH

  • Airbag sensor assembly
A01VI1PE11
Table 2. for 5 Door
*a Side Airbag Sensor Assembly RH
*b No. 2 Side Airbag Sensor Assembly RH
*c Airbag Sensor Assembly
Table 1. for 3 Door *a No. 2 Side Airbag Sensor Assembly RH *b Door Side Airbag Sensor RH *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 RH and No. 2 side airbag sensor assembly RH.

      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 RH and No. 2 side airbag sensor assembly RH.

    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. A01VL40E01

      Using a service wire, connect terminals 17 (BBR+) and 18 (BBR-) of connector B.

      Table 4. Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly RH *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 RH)
      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
      K46-3 (BCR-) - K46-4 (BCR+) Always Below 1 Ω

  4. Click here

    CHECK FLOOR WIRE (SHORT)


    1. A01VJ0XE02

      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
      K46-3 (BCR-) - K46-4 (BCR+) Always 1 MΩ or higher
      Table 5. Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly RH
      *2 Airbag Sensor Assembly
      *3 Floor Wire
      *4 Connector C
      *a

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly RH)

  5. Click here

    CHECK FLOOR WIRE (SHORT TO B+)


    1. A01VJ0XE02

      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
      K46-3 (BCR-) - Body ground Ignition switch ON Below 1 V
      K46-4 (BCR+) - Body ground Ignition switch ON Below 1 V
      Table 6. Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly RH
      *2 Airbag Sensor Assembly
      *3 Floor Wire
      *4 Connector C
      *a

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly RH)

  6. Click here

    CHECK FLOOR WIRE (SHORT TO GROUND)


    1. A01VJ0XE02

      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
      K46-3 (BCR-) - Body ground Always 1 MΩ or higher
      K46-4 (BCR+) - Body ground Always 1 MΩ or higher
      Table 7. Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly RH
      *2 Airbag Sensor Assembly
      *3 Floor Wire
      *4 Connector C
      *a

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly RH)

  7. Click here

    CHECK FLOOR WIRE AND FRONT DOOR WIRE RH (OPEN)


    1. A01VLP1E02

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

      Table 8. Text in Illustration
      *1 Door Side Airbag Sensor RH *2 No. 2 Side Airbag Sensor Assembly RH
      *3 Front Door Wire RH *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 RH)

      		 *b

      Front view of wire harness connector

      (to Door Side Airbag Sensor RH)
      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
      K46-1 (BDR+) - K46-2 (BDR-) Always Below 1 Ω

  8. Click here

    CHECK FLOOR WIRE AND FRONT DOOR WIRE RH (SHORT)


    1. A01VFBUE02

      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
      K46-1 (BDR+) - K46-2 (BDR-) Always 1 MΩ or higher
      Table 9. Text in Illustration
      *1 Door Side Airbag Sensor RH
      *2 No. 2 Side Airbag Sensor Assembly RH
      *3 Front Door Wire RH
      *4 Floor Wire
      *5 Connector B
      *a

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly RH)

  9. Click here

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


    1. A01VFBUE02

      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
      K46-1 (BDR+) - Body ground Ignition switch ON Below 1 V
      K46-2 (BDR-) - Body ground Ignition switch ON Below 1 V
      Table 10. Text in Illustration
      *1 Door Side Airbag Sensor RH
      *2 No. 2 Side Airbag Sensor Assembly RH
      *3 Front Door Wire RH
      *4 Floor Wire
      *5 Connector B
      *a

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly RH)

  10. Click here

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


    1. A01VFBUE02

      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
      K46-1 (BDR+) - Body ground Always 1 MΩ or higher
      K46-2 (BDR-) - Body ground Always 1 MΩ or higher
      Table 11. Text in Illustration
      *1 Door Side Airbag Sensor RH
      *2 No. 2 Side Airbag Sensor Assembly RH
      *3 Front Door Wire RH
      *4 Floor Wire
      *5 Connector B
      *a

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly RH)

  11. Click here

    CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY RH


    1. A01VDPCE01

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

    2. Interchange the No. 2 side airbag sensor assembly RH with the No. 2 side airbag sensor assembly LH 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 B1642/81 is output. A
      DTC B1647/82 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 LH
      *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 RH and the No. 2 side airbag sensor assembly LH to their original positions and connect the connectors to them.


  12. Click here

    CHECK DOOR SIDE AIRBAG SENSOR RH


    1. A01VKDLE03

      Interchange the door side airbag sensor RH with the door side airbag sensor LH 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 B1642/81 is output. B
      DTC B1647/82 is output. C
      Table 15. Text in Illustration
      *1 Door Side Airbag Sensor LH
      *2 No. 2 Side Airbag Sensor Assembly RH
      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 RH (OPEN)


    1. A01VHHOE01

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

      Table 16. Text in Illustration
      *1 Door Side Airbag Sensor RH *2 No. 2 Side Airbag Sensor Assembly RH
      *3 Front Door Wire RH *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 No. 2 Side Airbag Sensor Assembly RH)
      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
      GK2-1 (BDR+) - GK2-2 (BDR-) Always Below 1 Ω

    • OK

      REPLACE FLOOR WIRE

    • NG

      REPLACE FRONT DOOR WIRE RH

  14. Click here

    CHECK FRONT DOOR WIRE RH (SHORT)


    1. A01VFY0E01

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      GK2-1 (BDR+) - GK2-2 (BDR-) Always 1 MΩ or higher
      Table 17. Text in Illustration
      *1 Door Side Airbag Sensor RH
      *2 No. 2 Side Airbag Sensor Assembly RH
      *3 Front Door Wire RH
      *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 RH

  15. Click here

    CHECK FRONT DOOR WIRE RH (SHORT TO B+)


    1. Turn the ignition switch off.

    2. A01VFY0E01

      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
      GK2-1 (BDR+) - Body ground Ignition switch ON Below 1 V
      GK2-2 (BDR-) - Body ground Ignition switch ON Below 1 V
      Table 18. Text in Illustration
      *1 Door Side Airbag Sensor RH
      *2 No. 2 Side Airbag Sensor Assembly RH
      *3 Front Door Wire RH
      *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 RH

  16. Click here

    CHECK FRONT DOOR WIRE RH (SHORT TO GROUND)


    1. A01VFY0E01

      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
      GK2-1 (BDR+) - Body ground Always 1 MΩ or higher
      GK2-2 (BDR-) - Body ground Always 1 MΩ or higher
      Table 19. Text in Illustration
      *1 Door Side Airbag Sensor RH
      *2 No. 2 Side Airbag Sensor Assembly RH
      *3 Front Door Wire RH
      *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 RH

  17. Click here

    CHECK FLOOR WIRE (OPEN)


    1. A01VISDE02

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

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

      Front view of wire harness connector

      (to Side Airbag Sensor Assembly RH)

      		 *b

      Front view of wire harness connector

      (to No. 2 Side Airbag Sensor Assembly RH)
      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
      K22-1 (BCR+) - K22-2 (BCR-) Always Below 1 Ω

  18. Click here

    CHECK FLOOR WIRE (SHORT)


    1. A01VH73E02

      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
      K22-1 (BCR+) - K22-2 (BCR-) Always 1 MΩ or higher
      Table 21. Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly RH
      *2 Side Airbag Sensor Assembly RH
      *3 Floor Wire
      *4 Connector B
      *a

      Front view of wire harness connector

      (to Side Airbag Sensor Assembly RH)

  19. Click here

    CHECK FLOOR WIRE (SHORT TO B+)


    1. A01VH73E02

      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
      K22-1 (BCR+) - Body ground Ignition switch ON Below 1 V
      K22-2 (BCR-) - Body ground Ignition switch ON Below 1 V
      Table 22. Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly RH
      *2 Side Airbag Sensor Assembly RH
      *3 Floor Wire
      *4 Connector B
      *a

      Front view of wire harness connector

      (to Side Airbag Sensor Assembly RH)

  20. Click here

    CHECK FLOOR WIRE (SHORT TO GROUND)


    1. A01VH73E02

      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
      K22-1 (BCR+) - Body ground Always 1 MΩ or higher
      K22-2 (BCR-) - Body ground Always 1 MΩ or higher
      Table 23. Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly RH
      *2 Side Airbag Sensor Assembly RH
      *3 Floor Wire
      *4 Connector B
      *a

      Front view of wire harness connector

      (to Side Airbag Sensor Assembly RH)

  21. Click here

    CHECK SIDE AIRBAG SENSOR ASSEMBLY RH


    1. A01VDPCE01

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

    2. Interchange the side airbag sensor assembly RH with the side airbag sensor assembly LH 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 B1642/81 is output. A
      DTC B1647/82 is output. B
      DTC B1642/81 or B1647/82 is not output. C
      Table 25. Text in Illustration
      *1 Side Airbag Sensor Assembly LH
      *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 RH and the side airbag sensor assembly LH to their original positions and connect the connectors to them.


  22. Click here

    CHECK NO. 2 SIDE AIRBAG SENSOR ASSEMBLY RH


    1. A01VFE5E16

      Interchange the No. 2 side airbag sensor assembly RH with the No. 2 side airbag sensor assembly LH 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 B1642/81 is output. B
      DTC B1647/82 is output. C
      Table 27. Text in Illustration
      *1 No. 2 Side Airbag Sensor Assembly LH
      *2 Side Airbag Sensor Assembly RH
      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 RH (Click here)