AIRBAG SYSTEM, Diagnostic DTC:B1627, B1628, B1637, B1638, B1647, B1697, B1698

DTC Code DTC Name
B1627 Side Airbag Sensor LH Lost Communication
B1628 Side Airbag Sensor LH Initialization
B1637 Side No. 2 Airbag Sensor LH Lost Communication
B1638 Side No. 2 Airbag Sensor LH Initialization
B1647 Side Satellite Sensor Bus Lost Communication (LH)
B1697 Lost Communication with Side Airbag Sensor LH
B1698 Side Airbag Sensor LH Initialization Incomplete

DESCRIPTION

The side collision sensor LH circuit (to determine deployment of the front seat airbag assembly LH, curtain shield airbag assembly LH and front seat outer belt assembly LH) is composed of the airbag ECU assembly, side airbag sensor assembly LH, side No. 2 airbag sensor assembly LH and rear airbag sensor LH and No. 2 airbag sensor assembly.

The side airbag sensor assembly LH, side No. 2 airbag sensor assembly LH and rear airbag sensor LH detect impacts to the vehicle and send signals to the airbag ECU assembly to determine if the airbag should be deployed.

These DTCs are stored when a malfunction is detected for the side collision sensor LH circuit.

DTC No. DTC Detection Condition Trouble Area

B1627

B1628

B1637

B1638

B1647

B1697

B1698

  • The airbag ECU 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.

  • Side airbag sensor assembly LH malfunction

  • Side No. 2 airbag sensor assembly LH malfunction

  • Rear airbag sensor LH malfunction

  • Airbag ECU assembly malfunction

  • Floor wire

  • Front door wire LH

  • Side airbag sensor assembly LH

  • Side No. 2 airbag sensor assembly LH

  • Rear airbag sensor LH

  • Airbag ECU assembly

WIRING DIAGRAM

A004IOLE01

CAUTION / NOTICE / HINT

Note

After turning the ignition switch off, waiting time may be required before disconnecting the cable from the negative (-) battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) battery terminal notices before proceeding with work Click here.

PROCEDURE


  1. CHECK CURRENT DTC


    1. Check for current DTCs Click here.

      Result
      Result Proceed to
      Current DTC B1647 is output. A
      Current DTC B1628 or B1638 is output. B
      Current DTC B1697 or B1698 is output. C
      Current DTC B1627 or B1637 is output. D
      Current DTCs B1627, B1628, B1637, B1638, B1647, B1697 and B1698 are not output. E

      Tech Tips


      • DTCs indicating communication errors will be changed to DTCs indicating errors in initialization by turning the ignition switch off and then to ON again.

      • Codes other than current DTCs B1627, B1628, B1637, B1638, B1647, B1697 and B1698 may be output at this time, but they are not related to this check.


    B

    CHECK HISTORY DTC Click here

    C

    CHECK CONNECTORS Click here

    D

    CHECK CURRENT DTC Click here

    E

    USE SIMULATION METHOD TO CHECK Click here

    A

  2. 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 ECU assembly, side airbag sensor assembly LH, side No. 2 airbag sensor assembly LH and rear airbag sensor LH. Also check that the connectors that link the floor wire and front door wire LH are properly connected.

      OK
      The connectors are properly connected.

      Tech Tips

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

    4. Disconnect the connectors from the airbag ECU assembly, side airbag sensor assembly LH, side No. 2 airbag sensor assembly LH and rear airbag sensor LH. Also disconnect the connectors that link the floor wire and front door wire LH.

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

      OK
      The terminals are not deformed or damaged.

    NG

    REPLACE WIRE HARNESS

    OK

  3. CHECK FLOOR WIRE (OPEN)


    1. A004IWYE04
      Text in Illustration
      *1 Side No. 2 Airbag Sensor Assembly LH
      *2 Airbag ECU Assembly
      *3 Floor Wire
      *4 Service Wire
      *a

      Front view of wire harness connector

      (to Airbag ECU Assembly)
      *b

      Front view of wire harness connector

      (to Side No. 2 Airbag Sensor Assembly LH)

      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 the wire.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H23-4 (BUSIN) -H23-3 (RTNIN) Always Below 1 Ω

    3. Disconnect the service wire from connector B.


    NG

    REPLACE FLOOR WIRE

    OK

  4. CHECK FLOOR WIRE (SHORT)


    1. A004HCUE02
      Text in Illustration
      *1 Side No. 2 Airbag Sensor Assembly LH
      *2 Airbag ECU Assembly
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Side No. 2 Airbag Sensor Assembly LH)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H23-4 (BUSIN) - H23-3 (RTNIN) Always 1 MΩ or higher

    NG

    REPLACE FLOOR WIRE

    OK

  5. CHECK FLOOR WIRE (SHORT TO B+)


    1. A004HCUE02
      Text in Illustration
      *1 Side No. 2 Airbag Sensor Assembly LH
      *2 Airbag ECU Assembly
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Side No. 2 Airbag Sensor Assembly LH)

      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 Condition Specified Condition
      H23-4 (BUSIN) - Body ground Ignition switch ON Below 1 V
      H23-3 (RTNIN) - Body ground Ignition switch ON Below 1 V

    4. Turn the ignition switch off.

    5. 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.


    NG

    REPLACE FLOOR WIRE

    OK

  6. CHECK FLOOR WIRE (SHORT TO GROUND)


    1. A004HCUE02
      Text in Illustration
      *1 Side No. 2 Airbag Sensor Assembly LH
      *2 Airbag ECU Assembly
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Side No. 2 Airbag Sensor Assembly LH)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H23-4 (BUSIN) - Body ground Always 1 MΩ or higher
      H23-3 (RTNIN) - Body ground Always 1 MΩ or higher

    NG

    REPLACE FLOOR WIRE

    OK

  7. CHECK FLOOR WIRE (OPEN)


    1. A004JK9E02
      Text in Illustration
      *1 Rear Airbag Sensor LH
      *2 Side No. 2 Airbag Sensor Assembly LH
      *3 Floor Wire
      *4 Service Wire
      *a

      Front view of wire harness connector

      (to Side No. 2 Airbag Sensor Assembly LH)
      *b

      Front view of wire harness connector

      (to Rear Airbag Sensor LH)

      Using a service wire, connect terminals 4 (BUSIN) and 3 (RTNIN) of connector C.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H23-1 (BUSOUT) - H23-2 (RTNOUT) Always Below 1 Ω

    3. Disconnect the service wire from connector C.


    NG

    REPLACE FLOOR WIRE

    OK

  8. CHECK FLOOR WIRE (SHORT)

    A004JAOE02
    Text in Illustration
    *1 Rear Airbag Sensor LH
    *2 Side No. 2 Airbag Sensor Assembly LH
    *3 Floor Wire
    *a

    Front view of wire harness connector

    (to Side No. 2 Airbag Sensor Assembly LH)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H23-1 (BUSOUT) - H23-2 (RTNOUT) Always 1 MΩ or higher

    NG

    REPLACE FLOOR WIRE

    OK

  9. CHECK FLOOR WIRE (SHORT TO B+)


    1. A004JAOE02
      Text in Illustration
      *1 Rear Airbag Sensor LH
      *2 Side No. 2 Airbag Sensor Assembly LH
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Side No. 2 Airbag Sensor Assembly LH)

      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 Condition Specified Condition
      H23-1 (BUSOUT) - Body ground Ignition switch ON Below 1 V
      H23-2 (RTNOUT) - Body ground Ignition switch ON Below 1 V

    4. Turn the ignition switch off.

    5. 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.


    NG

    REPLACE FLOOR WIRE

    OK

  10. CHECK FLOOR WIRE (SHORT TO GROUND)


    1. A004JAOE02
      Text in Illustration
      *1 Rear Airbag Sensor LH
      *2 Side No. 2 Airbag Sensor Assembly LH
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Side No. 2 Airbag Sensor Assembly LH)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H23-1 (BUSOUT) - Body ground Always 1 MΩ or higher
      H23-2 (RTNOUT) - Body ground Always 1 MΩ or higher

    NG

    REPLACE FLOOR WIRE

    OK

  11. CHECK SIDE AIRBAG SENSOR ASSEMBLY LH CIRCUIT (OPEN)


    1. A004KA1E04
      Text in Illustration
      *1 Side Airbag Sensor Assembly LH
      *2 Rear Airbag Sensor LH
      *3 Service Wire
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor LH)
      *b

      Front view of wire harness connector

      (to Side Airbag Sensor Assembly LH)

      Connect the connectors that link the floor wire and front door wire LH.

    2. Using a service wire, connect terminals 2 (BUSIN) and 1 (RTNIN) of connector E.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H25-1 (BUSOUT) - H25-2 (RTNOUT) Always Below 1 Ω

    NG

    CHECK FRONT DOOR WIRE LH (OPEN) Click here

    OK

  12. CHECK SIDE AIRBAG SENSOR ASSEMBLY LH CIRCUIT (SHORT)


    1. A004INSE02
      Text in Illustration
      *1 Side Airbag Sensor Assembly LH
      *2 Rear Airbag Sensor LH
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor LH)

      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
      H25-1 (BUSOUT) - H25-2 (RTNOUT) Always 1 MΩ or higher

    NG

    CHECK FRONT DOOR WIRE LH (SHORT) Click here

    OK

  13. CHECK SIDE AIRBAG SENSOR ASSEMBLY LH CIRCUIT (SHORT TO B+)


    1. A004INSE02
      Text in Illustration
      *1 Side Airbag Sensor Assembly LH
      *2 Rear Airbag Sensor LH
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor LH)

      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 Condition Specified Condition
      H25-1 (BUSOUT) - Body ground Ignition switch ON Below 1 V
      H25-2 (RTNOUT) - Body ground Ignition switch ON Below 1 V

    4. Turn the ignition switch off.

    5. 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.


    NG

    CHECK FRONT DOOR WIRE LH (SHORT TO B+) Click here

    OK

  14. CHECK SIDE AIRBAG SENSOR ASSEMBLY LH CIRCUIT (SHORT TO GROUND)


    1. A004INSE02
      Text in Illustration
      *1 Side Airbag Sensor Assembly LH
      *2 Rear Airbag Sensor LH
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor LH)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H25-1 (BUSOUT) - Body ground Always 1 MΩ or higher
      H25-2 (RTNOUT) - Body ground Always 1 MΩ or higher

    NG

    CHECK FRONT DOOR WIRE LH (SHORT TO GROUND) Click here

    OK

  15. CHECK SIDE NO. 2 AIRBAG SENSOR ASSEMBLY LH


    1. A004H7ME05
      Text in Illustration
      *1 Side No. 2 Airbag Sensor Assembly RH
      *2 Airbag ECU Assembly

      Connect the connectors to the rear airbag sensor LH, side airbag sensor assembly LH and airbag ECU assembly.

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

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

    4. Clear the DTCs stored in 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.

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

      Tech Tips

      Codes other than DTCs B1642 and B1647 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 side No. 2 airbag sensor assembly LH and RH to their original positions and connect the connectors.


    B

    REPLACE SIDE NO. 2 AIRBAG SENSOR ASSEMBLY LH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

    A

  16. CHECK REAR AIRBAG SENSOR LH


    1. A004IWNE03
      Text in Illustration
      *1 Rear Airbag Sensor RH
      *2 Side No. 2 Airbag Sensor Assembly LH

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

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

    3. Clear the DTCs stored in memory Click here.

    4. Turn the ignition switch off.

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

    6. Check for DTCs Click here.

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

      Tech Tips

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

    7. Turn the ignition switch off.

    8. 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.

    9. Return the rear airbag sensor LH and RH to their original positions and connect the connectors.


    B

    REPLACE REAR AIRBAG SENSOR LH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

    A

  17. CHECK SIDE AIRBAG SENSOR ASSEMBLY LH


    1. A004IJWE05
      Text in Illustration
      *1 Side Airbag Sensor Assembly RH
      *2 Rear Airbag Sensor LH

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

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

    3. Clear the DTCs stored in memory Click here.

    4. Turn the ignition switch off.

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

    6. Check for DTCs Click here.

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

      Tech Tips

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

    7. Turn the ignition switch off.

    8. 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.

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


    A

    REPLACE AIRBAG ECU ASSEMBLY Click here

    B

    REPLACE SIDE AIRBAG SENSOR ASSEMBLY LH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

  18. CHECK HISTORY DTC


    1. Check for history DTCs Click here.

      Result
      Result Proceed to
      History DTCs B1627 and B1637 are not output. A
      History DTC B1627 is output. B
      History DTC B1637 is output. C

      Tech Tips

      Codes other than history DTCs B1627 and B1637 may be output at this time, but they are not related to this check.


    B

    CHECK SIDE NO. 2 AIRBAG SENSOR ASSEMBLY LH Click here

    C

    CHECK REAR AIRBAG SENSOR LH Click here

    A

  19. CHECK CURRENT DTC


    1. Check for current DTCs Click here.

      Result
      Result Proceed to
      Current DTC B1628 is output. A
      Current DTC B1638 is output. B

      Tech Tips

      Codes other than current DTCs B1628 and B1638 may be output at this time, but they are not related to this check.


    B

    CHECK CONNECTORS Click here

    A

  20. 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 ECU assembly and side No. 2 airbag sensor assembly LH.

      OK
      The connectors are properly connected.

      Tech Tips

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

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

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

      OK
      The terminals are not deformed or damaged.

    NG

    REPLACE FLOOR WIRE

    OK

  21. CHECK FLOOR WIRE (OPEN)


    1. A004IWYE04
      Text in Illustration
      *1 Side No. 2 Airbag Sensor Assembly LH
      *2 Airbag ECU Assembly
      *3 Floor Wire
      *4 Service Wire
      *a

      Front view of wire harness connector

      (to Airbag ECU Assembly)
      *b

      Front view of wire harness connector

      (to Side No. 2 Airbag Sensor Assembly LH)

      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 the wire.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H23-4 (BUSIN) - H23-3 (RTNIN) Always Below 1 Ω

    3. Disconnect the service wire from connector B.


    NG

    REPLACE FLOOR WIRE

    OK

  22. CHECK FLOOR WIRE (SHORT)

    A004HCUE02
    Text in Illustration
    *1 Side No. 2 Airbag Sensor Assembly LH
    *2 Airbag ECU Assembly
    *3 Floor Wire
    *a

    Front view of wire harness connector

    (to Side No. 2 Airbag Sensor Assembly LH)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H23-4 (BUSIN) - H23-3 (RTNIN) Always 1 MΩ or higher

    NG

    REPLACE FLOOR WIRE

    OK

  23. CHECK FLOOR WIRE (SHORT TO B+)


    1. A004HCUE02
      Text in Illustration
      *1 Side No. 2 Airbag Sensor Assembly LH
      *2 Airbag ECU Assembly
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Side No. 2 Airbag Sensor Assembly LH)

      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 Condition Specified Condition
      H23-4 (BUSIN) - Body ground Ignition switch ON Below 1 V
      H23-3 (RTNIN) - Body ground Ignition switch ON Below 1 V

    4. Turn the ignition switch off.

    5. 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.


    NG

    REPLACE FLOOR WIRE

    OK

  24. CHECK FLOOR WIRE (SHORT TO GROUND)


    1. A004HCUE02
      Text in Illustration
      *1 Side No. 2 Airbag Sensor Assembly LH
      *2 Airbag ECU Assembly
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Side No. 2 Airbag Sensor Assembly LH)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H23-4 (BUSIN) - Body ground Always 1 MΩ or higher
      H23-3 (RTNIN) - Body ground Always 1 MΩ or higher

    NG

    REPLACE FLOOR WIRE

    OK

  25. CHECK SIDE NO. 2 AIRBAG SENSOR ASSEMBLY LH


    1. A004H7ME05
      Text in Illustration
      *1 Side No. 2 Airbag Sensor Assembly RH
      *2 Airbag ECU Assembly

      Connect the connector to the airbag ECU assembly.

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

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

    4. Clear the DTCs stored in 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.

      Result
      Result Proceed to
      DTC B1628 is output. A
      DTC B1623 is output. B
      DTCs B1623 and B1628 are not output. C

      Tech Tips

      Codes other than DTCs B1623 and B1628 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 side No. 2 airbag sensor assembly LH and RH to their original positions and connect the connectors.


    A

    REPLACE AIRBAG ECU ASSEMBLY Click here

    B

    REPLACE SIDE NO. 2 AIRBAG SENSOR ASSEMBLY LH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

  26. 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 side No. 2 airbag sensor assembly LH and rear airbag sensor LH.

      OK
      The connectors are properly connected.

      Tech Tips

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

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

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

      OK
      The terminals are not deformed or damaged.

    NG

    REPLACE WIRE HARNESS

    OK

  27. CHECK FLOOR WIRE (OPEN)


    1. A004JK9E02
      Text in Illustration
      *1 Rear Airbag Sensor LH
      *2 Side No. 2 Airbag Sensor Assembly LH
      *3 Floor Wire
      *4 Service Wire
      *a

      Front view of wire harness connector

      (to Side No. 2 Airbag Sensor Assembly LH)
      *b

      Front view of wire harness connector

      (to Rear Airbag Sensor LH)

      Using a service wire, connect terminals 4 (BUSIN) and 3 (RTNIN) of connector C.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H23-1 (BUSOUT) - H23-2 (RTNOUT) Always Below 1 Ω

    3. Disconnect the service wire from connector C.


    NG

    REPLACE FLOOR WIRE

    OK

  28. CHECK FLOOR WIRE (SHORT)

    A004JAOE02
    Text in Illustration
    *1 Rear Airbag Sensor LH
    *2 Side No. 2 Airbag Sensor Assembly LH
    *3 Floor Wire
    *a

    Front view of wire harness connector

    (to Side No. 2 Airbag Sensor Assembly LH)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H23-1 (BUSOUT) - H23-2 (RTNOUT) Always 1 MΩ or higher

    NG

    REPLACE FLOOR WIRE

    OK

  29. CHECK FLOOR WIRE (SHORT TO B+)


    1. A004JAOE02
      Text in Illustration
      *1 Rear Airbag Sensor LH
      *2 Side No. 2 Airbag Sensor Assembly LH
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Side No. 2 Airbag Sensor Assembly LH)

      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 Condition Specified Condition
      H23-1 (BUSOUT) - Body ground Ignition switch ON Below 1 V
      H23-2 (RTNOUT) - Body ground Ignition switch ON Below 1 V

    4. Turn the ignition switch off.

    5. 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.


    NG

    REPLACE FLOOR WIRE

    OK

  30. CHECK FLOOR WIRE (SHORT TO GROUND)


    1. A004JAOE02
      Text in Illustration
      *1 Rear Airbag Sensor LH
      *2 Side No. 2 Airbag Sensor Assembly LH
      *3 Floor Wire
      *a

      Front view of wire harness connector

      (to Side No. 2 Airbag Sensor Assembly LH)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H23-1 (BUSOUT) - Body ground Always 1 MΩ or higher
      H23-2 (RTNOUT) - Body ground Always 1 MΩ or higher

    NG

    REPLACE FLOOR WIRE

    OK

  31. CHECK SIDE NO. 2 AIRBAG SENSOR ASSEMBLY LH


    1. A004H7ME05
      Text in Illustration
      *1 Side No. 2 Airbag Sensor Assembly RH
      *2 Airbag ECU Assembly

      Connect the connector to the rear airbag sensor LH.

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

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

    4. Clear the DTCs stored in 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.

      Result
      Result Proceed to
      DTC B1638 is output. A
      DTC B1633 is output. B
      DTCs B1633 and B1638 are not output. C

      Tech Tips

      Codes other than DTCs B1633 and B1638 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 side No. 2 airbag sensor assembly LH and RH to their original positions and connect the connectors.


    B

    REPLACE SIDE NO. 2 AIRBAG SENSOR ASSEMBLY LH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

    A

  32. CHECK REAR AIRBAG SENSOR LH


    1. A004IWNE03
      Text in Illustration
      *1 Rear Airbag Sensor RH
      *2 Side No. 2 Airbag Sensor Assembly LH

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

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

    3. Clear the DTCs stored in memory Click here.

    4. Turn the ignition switch off.

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

    6. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1638 is output. A
      DTC B1633 is output. B
      DTCs B1633 and B1638 are not output. C

      Tech Tips

      Codes other than DTCs B1633 and B1638 may be output at this time, but they are not related to this check.

    7. Turn the ignition switch off.

    8. 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.

    9. Return the rear airbag sensor LH and RH to their original positions and connect the connectors.


    A

    REPLACE AIRBAG ECU ASSEMBLY Click here

    B

    REPLACE REAR AIRBAG SENSOR LH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

  33. 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 rear airbag sensor LH and side airbag sensor assembly LH. Also check that the connectors that link the floor wire and front door wire LH are properly connected.

      OK
      The connectors are properly connected.

      Tech Tips

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

    4. Disconnect the connectors from the rear airbag sensor LH and side airbag sensor assembly LH. Also disconnect the connectors that link the floor wire and front door wire LH.

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

      OK
      The terminals are not deformed or damaged.

    NG

    REPLACE WIRE HARNESS

    OK

  34. CHECK SIDE AIRBAG SENSOR ASSEMBLY LH CIRCUIT (OPEN)


    1. A004KA1E04
      Text in Illustration
      *1 Side Airbag Sensor Assembly LH
      *2 Rear Airbag Sensor LH
      *3 Service Wire
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor LH)
      *b

      Front view of wire harness connector

      (to Side Airbag Sensor Assembly LH)

      Connect the connectors that link the floor wire and front door wire LH.

    2. Using a service wire, connect terminals 2 (BUSIN) and 1 (RTNIN) of connector E.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H25-1 (BUSOUT) - H25-2 (RTNOUT) Always Below 1 Ω

    NG

    CHECK FRONT DOOR WIRE LH (OPEN) Click here

    OK

  35. CHECK SIDE AIRBAG SENSOR ASSEMBLY LH CIRCUIT (SHORT)


    1. A004INSE02
      Text in Illustration
      *1 Side Airbag Sensor Assembly LH
      *2 Rear Airbag Sensor LH
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor LH)

      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
      H25-1 (BUSOUT) - H25-2 (RTNOUT) Always 1 MΩ or higher

    NG

    CHECK FRONT DOOR WIRE LH (SHORT) Click here

    OK

  36. CHECK SIDE AIRBAG SENSOR ASSEMBLY LH CIRCUIT (SHORT TO B+)


    1. A004INSE02
      Text in Illustration
      *1 Side Airbag Sensor Assembly LH
      *2 Rear Airbag Sensor LH
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor LH)

      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 Condition Specified Condition
      H25-1 (BUSOUT) - Body ground Ignition switch ON Below 1 V
      H25-2 (RTNOUT) - Body ground Ignition switch ON Below 1 V

    4. Turn the ignition switch off.

    5. 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.


    NG

    CHECK FRONT DOOR WIRE LH (SHORT TO B+) Click here

    OK

  37. CHECK SIDE AIRBAG SENSOR ASSEMBLY LH CIRCUIT (SHORT TO GROUND)


    1. A004INSE02
      Text in Illustration
      *1 Side Airbag Sensor Assembly LH
      *2 Rear Airbag Sensor LH
      *a

      Front view of wire harness connector

      (to Rear Airbag Sensor LH)

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      H25-1 (BUSOUT) - Body ground Always 1 MΩ or higher
      H25-2 (RTNOUT) - Body ground Always 1 MΩ or higher

    NG

    CHECK FRONT DOOR WIRE LH (SHORT TO GROUND) Click here

    OK

  38. CHECK SIDE AIRBAG SENSOR ASSEMBLY LH


    1. A004IJWE03
      Text in Illustration
      *1 Side Airbag Sensor Assembly RH
      *2 Rear Airbag Sensor LH

      Connect the connectors to the rear airbag sensor LH.

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

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

    4. Clear the DTCs stored in 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.

      Result
      Result Proceed to
      DTC B1697 or B1698 is output. A
      DTC B1692 or B1693 is output. B
      DTCs B1692, B1693, B1697 and B1698 are not output. C

      Tech Tips

      Codes other than DTCs B1692, B1693, B1697 and B1698 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 side airbag sensor assembly LH and RH to their original positions and connect the connectors.


    B

    REPLACE SIDE AIRBAG SENSOR ASSEMBLY LH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

    A

  39. CHECK REAR AIRBAG SENSOR LH


    1. A004IWNE03
      Text in Illustration
      *1 Rear Airbag Sensor RH
      *2 Side No. 2 Airbag Sensor Assembly LH

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

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

    3. Clear the DTCs stored in memory Click here.

    4. Turn the ignition switch off.

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

    6. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1697 or B1698 is output. A
      DTC B1692 or B1693 is output. B
      DTCs B1692, B1693, B1697 and B1698 are not output. C

      Tech Tips

      Codes other than DTCs B1692, B1693, B1697 and B1698 may be output at this time, but they are not related to this check.

    7. Turn the ignition switch off.

    8. 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.

    9. Return the rear airbag sensor LH and RH to their original positions and connect the connectors.


    A

    REPLACE AIRBAG ECU ASSEMBLY Click here

    B

    REPLACE REAR AIRBAG SENSOR LH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

  40. CHECK CURRENT DTC


    1. Check for current DTCs Click here.

      Result
      Result Proceed to
      Current DTC B1627 is output. A
      Current DTC B1637 is output. B

      Tech Tips

      Codes other than current DTCs B1627 and B1637 may be output at this time, but they are not related to this check.

    2. Turn the ignition switch off.


    B

    CHECK REAR AIRBAG SENSOR LH Click here

    A

  41. CHECK SIDE NO. 2 AIRBAG SENSOR ASSEMBLY LH


    1. A004H7ME05
      Text in Illustration
      *1 Side No. 2 Airbag Sensor Assembly RH
      *2 Airbag ECU Assembly

      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.

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

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

    4. Clear the DTCs stored in 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.

      Result
      Result Proceed to
      DTC B1627 is output. A
      DTC B1622 is output. B
      DTCs B1622 and B1627 are not output. C

      Tech Tips

      Codes other than DTCs B1622 and B1627 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 side No. 2 airbag sensor assembly LH and RH to their original positions and connect the connectors.


    A

    REPLACE AIRBAG ECU ASSEMBLY Click here

    B

    REPLACE SIDE NO. 2 AIRBAG SENSOR ASSEMBLY LH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

  42. CHECK REAR AIRBAG SENSOR LH


    1. A004IWNE03
      Text in Illustration
      *1 Rear Airbag Sensor RH
      *2 Side No. 2 Airbag Sensor Assembly LH

      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.

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

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

    4. Clear the DTCs stored in 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.

      Result
      Result Proceed to
      DTC B1637 is output. A
      DTC B1632 is output. B
      DTCs B1632 and B1637 are not output. C

      Tech Tips

      Codes other than DTCs B1632 and B1637 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 rear airbag sensor LH and RH to their original positions and connect the connectors.


    A

    REPLACE AIRBAG ECU ASSEMBLY Click here

    B

    REPLACE REAR AIRBAG SENSOR LH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

  43. CHECK FRONT DOOR WIRE LH (OPEN)


    1. A004HUZE02
      Text in Illustration
      *1 Side Airbag Sensor Assembly LH
      *2 Rear Airbag Sensor LH
      *3 Front Door Wire LH
      *4 Floor Wire
      *5 Service Wire
      *a

      Front view of wire harness connector

      (to Floor Wire)
      *b

      Front view of wire harness connector

      (to Side Airbag Sensor Assembly LH)

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

      Tech Tips

      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
      EH1-1 - EH1-2 Always Below 1 Ω

    3. Disconnect the service wire from connector E.


    OK

    REPLACE FLOOR WIRE

    NG

    REPLACE FRONT DOOR WIRE LH

  44. CHECK FRONT DOOR WIRE LH (SHORT)


    1. A004JK2E02
      Text in Illustration
      *1 Side Airbag Sensor Assembly LH
      *2 Rear Airbag Sensor LH
      *3 Front Door Wire LH
      *4 Floor Wire
      *a

      Front view of wire harness connector

      (to Floor Wire)

      Disconnect the front door wire LH 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
      EH1-1 - EH1-2 Always 1 MΩ or higher

    OK

    REPLACE FLOOR WIRE

    NG

    REPLACE FRONT DOOR WIRE LH

  45. CHECK FRONT DOOR WIRE LH (SHORT TO B+)


    1. A004JK2E02
      Text in Illustration
      *1 Side Airbag Sensor Assembly LH
      *2 Rear Airbag Sensor LH
      *3 Front Door Wire LH
      *4 Floor Wire
      *a

      Front view of wire harness connector

      (to Floor Wire)

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

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

    3. Turn the ignition switch to ON.

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

      Standard Voltage
      Tester Connection Condition Specified Condition
      EH1-1 - Body ground Ignition switch ON Below 1 V
      EH1-2 - Body ground Ignition switch ON Below 1 V

    OK

    REPLACE FLOOR WIRE

    NG

    REPLACE FRONT DOOR WIRE LH

  46. CHECK FRONT DOOR WIRE LH (SHORT TO GROUND)


    1. A004JK2E02
      Text in Illustration
      *1 Side Airbag Sensor Assembly LH
      *2 Rear Airbag Sensor LH
      *3 Front Door Wire LH
      *4 Floor Wire
      *a

      Front view of wire harness connector

      (to Floor Wire)

      Disconnect the front door wire LH 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
      EH1-1 - Body ground Always 1 MΩ or higher
      EH1-2 - Body ground Always 1 MΩ or higher

    OK

    REPLACE FLOOR WIRE

    NG

    REPLACE FRONT DOOR WIRE LH