AIRBAG SYSTEM, Diagnostic DTC:B1622/81, B1623/81, B1632/81, B1633/81, B1642/81, B1643/81

DTC Code DTC Name
B1622/81 Lost Communication with Driver Side - Side Airbag Sensor Assembly
B1623/81 Driver Side - Side Airbag Sensor Assembly Initialization Incomplete
B1632/81 Lost Communication with Driver Side Rear Airbag Sensor
B1633/81 Driver Side Rear Airbag Sensor Initialization Incomplete
B1642/81 Lost Communication with Driver Side Satellite Sensor Bus
B1643/81 Driver Side Satellite Sensor Bus Initialization Incomplete

DESCRIPTION

The driver side - side collision sensor circuit (to determine deployment of the front seat side airbag assembly (driver side) and curtain shield airbag assembly (driver side)) is composed of the center airbag sensor assembly, side airbag sensor (driver side), and rear airbag sensor (driver side).

The side airbag sensor (driver side) and rear airbag sensor (driver side) detect impacts to the vehicle and send signals to the center airbag sensor assembly to determine if the airbag should be deployed.

These DTCs are recorded when a malfunction is detected in the driver side - side collision sensor circuit (to determine deployment of the front seat side airbag assembly (driver side) and curtain shield airbag assembly (driver side)).

DTC No. DTC Detection Condition Trouble Area

B1622/81

B1623/81

B1632/81

B1633/81

B1642/81

B1643/81

  • The center 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 driver side - side collision sensor circuit (to determine deployment of the front seat side airbag assembly (driver side) and curtain shield airbag assembly (driver side)) for 2 seconds.


  • Side airbag sensor (driver side) malfunction


  • Rear airbag sensor (driver side) malfunction


  • Center airbag sensor assembly malfunction

  • No. 2 floor wire (for LHD)

  • Floor wire (for RHD)

  • Side airbag sensor (Driver side)

  • Rear airbag sensor (Driver side)

  • Center airbag sensor assembly

WIRING DIAGRAM

A0160YYE03

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK PRESENT DTC


    1. A015ZKHE06

      Turn the engine switch on (IG), and wait for at least 60 seconds.

    2. Check for present DTCs Click here.

      Result
      Result Proceed to
      Present DTC B1623 or B1643 is output. A
      Present DTC B1642 or 81 is output. B
      Present DTC B1632 or B1633 is output. C
      Present DTC B1622 is output. D
      Present DTC B1622, B1623, B1632, B1633, B1642, B1643 or 81 is not output. E

      Tech Tips


      • DTCs indicating communication errors will be changed to DTCs indicating errors in initialization by turning the engine switch off and then on (IG) again.

      • Codes other than present DTC B1622, B1623, B1632, B1633, B1642, B1643, and 81 may be output at this time, but they are not related to this check.


    B

    CHECK CONNECTORS Click here

    C

    CHECK CONNECTORS Click here

    D

    CHECK REAR AIRBAG SENSOR (DRIVER SIDE) Click here

    E

    USE SIMULATION METHOD TO CHECK Click here

    A

  2. CHECK PAST DTC


    1. Check for past DTCs Click here.

      Result
      Result Proceed to
      Past DTC B1622 and B1632 are not output. A
      Past DTC B1632 is output. B
      Past DTC B1622 is output. C

      Tech Tips

      Codes other than past DTC B1622 and B1632 may be output at this time, but they are not related to this check.


    B

    CHECK CONNECTORS Click here

    C

    CHECK REAR AIRBAG SENSOR (DRIVER SIDE) Click here

    A

  3. CHECK CONNECTORS


    1. Turn the engine 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 assembly, rear airbag sensor (driver side) and the side airbag sensor (driver side).

      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 center airbag sensor assembly, rear airbag sensor (driver side) and side airbag sensor (driver side).

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

      OK
      The terminals are not deformed or damaged.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE NO. 2 FLOOR WIRE

    C

    REPLACE FLOOR WIRE

    A

  4. CHECK WIRE HARNESS (OPEN)


    1. Using SST, connect terminals 8 (BCD+) and 15 (BCD-) of connector B.

      A015YWCE04

      Note

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

      SST
      09843-18040

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      Q15-4 (BCL+) - Q15-3 (BCL-) Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      P11-4 (BCR+) - P11-3 (BCR-) Always Below 1 Ω
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE NO. 2 FLOOR WIRE

    C

    REPLACE FLOOR WIRE

    A

  5. CHECK WIRE HARNESS (SHORT)


    1. A01629TE05

      Disconnect SST from connector B.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      Q15-4 (BCL+) - Q15-3 (BCL-) Always 1 MΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      P11-4 (BCR+) - P11-3 (BCR-) Always 1 MΩ or higher
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE NO. 2 FLOOR WIRE

    C

    REPLACE FLOOR WIRE

    A

  6. CHECK WIRE HARNESS (SHORT TO B+)


    1. A01629TE05

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

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      for LHD
      Tester Connection Switch Condition Specified Condition
      Q15-4 (BCL+) - Body ground Engine switch on (IG) Below 1 V
      Q15-3 (BCL-) - Body ground Engine switch on (IG) Below 1 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      P11-4 (BCR+) - Body ground Engine switch on (IG) Below 1 V
      P11-3 (BCR-) - Body ground Engine switch on (IG) Below 1 V
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE NO. 2 FLOOR WIRE

    C

    REPLACE FLOOR WIRE

    A

  7. CHECK WIRE HARNESS (SHORT TO GROUND)


    1. A01629TE05

      Turn the engine switch off.

    2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      Q15-4 (BCL+) - Body ground Always 1 MΩ or higher
      Q15-3 (BCL-) - Body ground Always 1 MΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      P11-4 (BCR+) - Body ground Always 1 MΩ or higher
      P11-3 (BCR-) - Body ground Always 1 MΩ or higher
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE NO. 2 FLOOR WIRE

    C

    REPLACE FLOOR WIRE

    A

  8. CHECK WIRE HARNESS (OPEN)


    1. Using SST, connect terminals 1 and 2 of connector C.

      A015YJ1E05

      Note

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

      SST
      09843-18040

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      Q15-1 (BBL+) - Q15-2 (BBL-) Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      P11-1 (BBR+) - P11-2 (BBR-) Always Below 1 Ω
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE NO. 2 FLOOR WIRE

    C

    REPLACE FLOOR WIRE

    A

  9. CHECK WIRE HARNESS (SHORT)


    1. A0160Y2E05

      Disconnect SST from connector C.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      Q15-1 (BBL+) - Q15-2 (BBL-) Always 1 MΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      P11-1 (BBR+) - P11-2 (BBR-) Always 1 MΩ or higher
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE NO. 2 FLOOR WIRE

    C

    REPLACE FLOOR WIRE

    A

  10. CHECK WIRE HARNESS (SHORT TO B+)


    1. A0160Y2E05

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

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      for LHD
      Tester Connection Switch Condition Specified Condition
      Q15-1 (BBL+) - Body ground Engine switch on (IG) Below 1 V
      Q15-2 (BBL-) - Body ground Engine switch on (IG) Below 1 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      P11-1 (BBR+) - Body ground Engine switch on (IG) Below 1 V
      P11-2 (BBR-) - Body ground Engine switch on (IG) Below 1 V
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE NO. 2 FLOOR WIRE

    C

    REPLACE FLOOR WIRE

    A

  11. CHECK WIRE HARNESS (SHORT TO GROUND)


    1. A0160Y2E05

      Turn the engine switch off.

    2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      Q15-1 (BBL+) - Body ground Always 1 MΩ or higher
      Q15-2 (BBL-) - Body ground Always 1 MΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      P11-1 (BBR+) - Body ground Always 1 MΩ or higher
      P11-2 (BBR-) - Body ground Always 1 MΩ or higher
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE NO. 2 FLOOR WIRE

    C

    REPLACE FLOOR WIRE

    A

  12. CHECK REAR AIRBAG SENSOR (DRIVER SIDE)


    1. A0160E1E04

      Connect the connector to the side airbag sensor (driver side) and center airbag sensor assembly.

    2. Interchange the rear airbag sensor (passenger side) with the rear airbag sensor (driver side) and connect the connectors.

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

    4. Turn the engine switch on (IG), and wait for at least 60 seconds.

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

    6. Turn the engine switch off.

    7. Turn the engine switch on (IG), and wait for at least 60 seconds.

    8. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1623, B1642, B1643, or 81 is output. A
      DTC B1628, B1647, B1648, or 82 is output. B
      DTC B1623, B1642, B1643, or 81 and B1628, B1647, B1648, or 82 are not output. C

      Tech Tips

      Codes other than DTC B1623, B1642, B1643, or 81 and B1628, B1647, B1648, or 82 may be output at this time, but they are not related to this check.


    B

    REPLACE REAR AIRBAG SENSOR (DRIVER SIDE) Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

    A

  13. CHECK SIDE AIRBAG SENSOR (DRIVER SIDE)


    1. A015YH0E08

      Turn the engine switch off.

    2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

    3. Return the rear airbag sensor (passenger side) and rear airbag sensor (driver side) to their original positions and connect the connectors.

    4. Interchange the side airbag sensor (passenger side) with the side airbag sensor (driver side) and connect the connectors.

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

    6. Turn the engine switch on (IG), and wait for at least 60 seconds.

    7. Clear the DTCs stored in the memory Click here.

    8. Turn the engine switch off.

    9. Turn the engine switch on (IG), and wait for at least 60 seconds.

    10. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1623, B1642, B1643, or 81 and B1628, B1647, B1648, or 82 are not output. A
      DTC B1623, B1642, B1643, or 81 is output. B
      DTC B1628, B1647, B1648, or 82 is output. C

      Tech Tips

      Codes other than DTC B1623, B1642, B1643, or 81 and B1628, B1647, B1648, or 82 may be output at this time, but they are not related to this check.


    B

    REPLACE CENTER AIRBAG SENSOR ASSEMBLY Click here

    C

    REPLACE SIDE AIRBAG SENSOR (DRIVER SIDE) Click here

    A

    USE SIMULATION METHOD TO CHECK Click here

  14. CHECK CONNECTORS


    1. Turn the engine 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 rear airbag sensor (driver side) and side airbag sensor (driver side).

      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 (driver side) and side airbag sensor (driver side).

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

      OK
      The terminals are not deformed or damaged.
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE NO. 2 FLOOR WIRE

    C

    REPLACE FLOOR WIRE

    A

  15. CHECK WIRE HARNESS (OPEN)


    1. Using SST, connect terminals 2 and 1 of connector C.

      A015YJ1E05

      Note

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

      SST
      09843-18040

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      Q15-1 (BBL+) - Q15-2 (BBL-) Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      P11-1 (BBR+) - P11-2 (BBR-) Always Below 1 Ω
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE NO. 2 FLOOR WIRE

    C

    REPLACE FLOOR WIRE

    A

  16. CHECK WIRE HARNESS (SHORT)


    1. A0160Y2E05

      Disconnect SST from connector C.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      Q15-1 (BBL+) - Q15-2 (BBL-) Always 1 MΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      P11-1 (BBR+) - P11-2 (BBR-) Always 1 MΩ or higher
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE NO. 2 FLOOR WIRE

    C

    REPLACE FLOOR WIRE

    A

  17. CHECK WIRE HARNESS (SHORT TO B+)


    1. A0160Y2E05

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

    2. Turn the engine switch on (IG).

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

      Standard Voltage
      for LHD
      Tester Connection Switch Condition Specified Condition
      Q15-1 (BBL+) - Body ground Engine switch on (IG) Below 1 V
      Q15-2 (BBL-) - Body ground Engine switch on (IG) Below 1 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      P11-1 (BBR+) - Body ground Engine switch on (IG) Below 1 V
      P11-2 (BBR-) - Body ground Engine switch on (IG) Below 1 V
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE NO. 2 FLOOR WIRE

    C

    REPLACE FLOOR WIRE

    A

  18. CHECK WIRE HARNESS (SHORT TO GROUND)


    1. A0160Y2E05

      Turn the engine switch off.

    2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

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

      Standard Resistance
      for LHD
      Tester Connection Condition Specified Condition
      Q15-1 (BBL+) - Body ground Always 1 MΩ or higher
      Q15-2 (BBL-) - Body ground Always 1 MΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      P11-1 (BBR+) - Body ground Always 1 MΩ or higher
      P11-2 (BBR-) - Body ground Always 1 MΩ or higher
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE NO. 2 FLOOR WIRE

    C

    REPLACE FLOOR WIRE

    A

  19. CHECK REAR AIRBAG SENSOR (DRIVER SIDE)


    1. A015ZZJE04

      Connect the connector to the side airbag sensor (driver side).

    2. Interchange the rear airbag sensor (passenger side) with the rear airbag sensor (driver side) and connect the connectors.

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

    4. Turn the engine switch on (IG), and wait for at least 60 seconds.

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

    6. Turn the engine switch off.

    7. Turn the engine switch on (IG), and wait for at least 60 seconds.

    8. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1632 or B1633 is output. A
      DTC B1637 or B1638 is output. B
      DTC B1632 or B1633 and B1637 or B1638 are not output. C

      Tech Tips

      Codes other than DTC B1632 or B1633 and B1637 or B1638 may be output at this time, but they are not related to this check.


    B

    REPLACE REAR AIRBAG SENSOR (DRIVER SIDE) Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

    A

  20. CHECK SIDE AIRBAG SENSOR (DRIVER SIDE)


    1. A015Z94E09

      Turn the engine switch off.

    2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

    3. Return the rear airbag sensor (passenger side) and rear airbag sensor (driver side) to their original positions and connect the connectors.

    4. Interchange the side airbag sensor (passenger side) with the side airbag sensor (driver side) and connect the connectors.

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

    6. Turn the engine switch on (IG), and wait for at least 60 seconds.

    7. Clear the DTCs stored in the memory Click here.

    8. Turn the engine switch off.

    9. Turn the engine switch on (IG), and wait for at least 60 seconds.

    10. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1632 or B1633 and B1637 or B1638 are not output. A
      DTC B1632 or B1633 is output. B
      DTC B1637 or B1638 is output. C

      Tech Tips

      Codes other than DTC B1632 or B1633 and B1637 or B1638 may be output at this time, but they are not related to this check.


    B

    REPLACE CENTER AIRBAG SENSOR ASSEMBLY Click here

    C

    REPLACE SIDE AIRBAG SENSOR (DRIVER SIDE) Click here

    A

    USE SIMULATION METHOD TO CHECK Click here

  21. CHECK REAR AIRBAG SENSOR (DRIVER SIDE)


    1. A015ZZJE04

      Turn the engine switch off.

    2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.

    3. Interchange the rear airbag sensor (passenger side) with the rear airbag sensor (driver side) and connect the connectors.

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

    5. Turn the engine switch on (IG), and wait for at least 60 seconds.

    6. Clear the DTCs stored in the memory Click here.

    7. Turn the engine switch off.

    8. Turn the engine switch on (IG), and wait for at least 60 seconds.

    9. Check for DTCs Click here.

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

      Tech Tips

      Codes other than DTC B1622 and B1627 may be output at this time, but they are not related to this check.


    B

    REPLACE CENTER AIRBAG SENSOR ASSEMBLY Click here

    C

    REPLACE REAR AIRBAG SENSOR (DRIVER SIDE) Click here

    A

    USE SIMULATION METHOD TO CHECK Click here