AIRBAG SYSTEM, Diagnostic DTC:B1627/82, B1628/82, B1637/82, B1638/82, B1647/82, B1648/82

DTC Code DTC Name
B1627/82 Lost Communication with Front Passenger Side - Side Airbag Sensor Assembly
B1628/82 Front Passenger Side - Side Airbag Sensor Assembly Initialization Incomplete
B1637/82 Lost Communication with Passenger Side Rear Airbag Sensor
B1638/82 Passenger Side Rear Airbag Sensor Initialization Incomplete
B1647/82 Lost Communication with Front Passenger Side Satellite Sensor Bus
B1648/82 Front Passenger Side Satellite Sensor Bus Initialization Incomplete

DESCRIPTION

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

The side airbag sensor (passenger side) and rear airbag sensor (passenger 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 front passenger side - side collision sensor circuit (to determine deployment of the front seat side airbag assembly (passenger side) and curtain shield airbag assembly (passenger side)).

DTC No. DTC Detection Condition Trouble Area

B1627/82

B1628/82

B1637/82

B1638/82

B1647/82

B1648/82

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


  • Side airbag sensor (passenger side) malfunction


  • Rear airbag sensor (passenger side) malfunction


  • Center airbag sensor assembly malfunction

  • Floor wire (for LHD)

  • No. 2 floor wire (for RHD)

  • Side airbag sensor (Passenger side)

  • Rear airbag sensor (Passenger side)

  • Center airbag sensor assembly

WIRING DIAGRAM

A0160YYE07

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK PRESENT DTC


    1. A0161UKE04

      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 B1628 or B1648 is output. A
      Present DTC B1647 or 82 is output. B
      Present DTC B1637 or B1638 is output. C
      Present DTC B1627 is output. D
      Present DTC B1627, B1628, B1637, B1638, B1647, B1648, or 82 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 B1627, B1628, B1637, B1638, B1647, B1648, and 82 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 (PASSENGER 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 B1627 or B1637 is not output. A
      Past DTC B1637 is output. B
      Past DTC B1627 is output. C

      Tech Tips

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


    B

    CHECK CONNECTORS Click here

    C

    CHECK REAR AIRBAG SENSOR (PASSENGER 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 (passenger side) and the side airbag sensor (passenger 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 (passenger side) and side airbag sensor (passenger 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 FLOOR WIRE

    C

    REPLACE NO. 2 FLOOR WIRE

    A

  4. CHECK WIRE HARNESS (OPEN)


    1. Using SST, connect terminals 8 (BCP+) and 11 (BCP-) of connector B.

      A0160Q5E06

      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
      P39-4 (BCR+) - P39-3 (BCR-) Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      Q58-4 (BCL+) - Q58-3 (BCL-) Always Below 1 Ω
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE FLOOR WIRE

    C

    REPLACE NO. 2 FLOOR WIRE

    A

  5. CHECK WIRE HARNESS (SHORT)


    1. A015YL6E06

      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
      P39-4 (BCR+) - P39-3 (BCR-) Always 1 MΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      Q58-4 (BCL+) - Q58-3 (BCL-) Always 1 MΩ or higher
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE FLOOR WIRE

    C

    REPLACE NO. 2 FLOOR WIRE

    A

  6. CHECK WIRE HARNESS (SHORT TO B+)


    1. A015YL6E06

      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
      P39-4 (BCR+) - Body ground Engine switch on (IG) Below 1 V
      P39-3 (BCR-) - Body ground Engine switch on (IG) Below 1 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      Q58-4 (BCL+) - Body ground Engine switch on (IG) Below 1 V
      Q58-3 (BCL-) - 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 FLOOR WIRE

    C

    REPLACE NO. 2 FLOOR WIRE

    A

  7. CHECK WIRE HARNESS (SHORT TO GROUND)


    1. A015YL6E06

      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
      P39-4 (BCR+) - Body ground Always 1 MΩ or higher
      P39-3 (BCR-) - Body ground Always 1 MΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      Q58-4 (BCL+) - Body ground Always 1 MΩ or higher
      Q58-3 (BCL-) - Body ground Always 1 MΩ or higher
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE FLOOR WIRE

    C

    REPLACE NO. 2 FLOOR WIRE

    A

  8. CHECK WIRE HARNESS (OPEN)


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

      A015YJ1E10

      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
      P39-2 (BBR-) - P39-1 (BBR+) Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      Q58-1 (BBL+) - Q58-2 (BBL-) Always Below 1 Ω
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE FLOOR WIRE

    C

    REPLACE NO. 2 FLOOR WIRE

    A

  9. CHECK WIRE HARNESS (SHORT)


    1. A0160Y2E10

      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
      P39-1 (BBR+) - P39-2 (BBR-) Always 1 MΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      Q58-1 (BBL+) - Q58-2 (BBL-) Always 1 MΩ or higher
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE FLOOR WIRE

    C

    REPLACE NO. 2 FLOOR WIRE

    A

  10. CHECK WIRE HARNESS (SHORT TO B+)


    1. A0160Y2E10

      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
      P39-1 (BBR+) - Body ground Engine switch on (IG) Below 1 V
      P39-2 (BBR-) - Body ground Engine switch on (IG) Below 1 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      Q58-1 (BBL+) - Body ground Engine switch on (IG) Below 1 V
      Q58-2 (BBL-) - 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 FLOOR WIRE

    C

    REPLACE NO. 2 FLOOR WIRE

    A

  11. CHECK WIRE HARNESS (SHORT TO GROUND)


    1. A0160Y2E10

      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
      P39-1 (BBR+) - Body ground Always 1 MΩ or higher
      P39-2 (BBR-) - Body ground Always 1 MΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      Q58-1 (BBL+) - Body ground Always 1 MΩ or higher
      Q58-2 (BBL-) - Body ground Always 1 MΩ or higher
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE FLOOR WIRE

    C

    REPLACE NO. 2 FLOOR WIRE

    A

  12. CHECK REAR AIRBAG SENSOR (PASSENGER SIDE)


    1. A01621DE04

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

    2. Interchange the rear airbag sensor (driver side) with the rear airbag sensor (passenger 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 B1628, B1647, B1648, or 82 is output. A
      DTC B1623, B1642, B1643, or 81 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 (PASSENGER SIDE) Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

    A

  13. CHECK SIDE AIRBAG SENSOR (PASSENGER SIDE)


    1. A015YH0E09

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

    4. Interchange the side airbag sensor (driver side) with the side airbag sensor (passenger 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 B1628, B1647, B1648, or 82 is output. B
      DTC B1623, B1642, B1643, or 81 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 (PASSENGER 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 (passenger side) and the side airbag sensor (passenger 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 (passenger side) and side airbag sensor (passenger 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 FLOOR WIRE

    C

    REPLACE NO. 2 FLOOR WIRE

    A

  15. CHECK WIRE HARNESS (OPEN)


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

      A015YJ1E10

      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
      P39-1 (BBR+) - P39-2 (BBR-) Always Below 1 Ω
      for RHD
      Tester Connection Condition Specified Condition
      Q58-1 (BBL+) - Q58-2 (BBL-) Always Below 1 Ω
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE FLOOR WIRE

    C

    REPLACE NO. 2 FLOOR WIRE

    A

  16. CHECK WIRE HARNESS (SHORT)


    1. A0160Y2E10

      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
      P39-1 (BBR+) - P39-2 (BBR-) Always 1 MΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      Q58-1 (BBL+) - Q58-2 (BBL-) Always 1 MΩ or higher
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE FLOOR WIRE

    C

    REPLACE NO. 2 FLOOR WIRE

    A

  17. CHECK WIRE HARNESS (SHORT TO B+)


    1. A0160Y2E10

      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
      P39-1 (BBR+) - Body ground Engine switch on (IG) Below 1 V
      P39-2 (BBR-) - Body ground Engine switch on (IG) Below 1 V
      for RHD
      Tester Connection Switch Condition Specified Condition
      Q58-1 (BBL+) - Body ground Engine switch on (IG) Below 1 V
      Q58-2 (BBL-) - 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 FLOOR WIRE

    C

    REPLACE NO. 2 FLOOR WIRE

    A

  18. CHECK WIRE HARNESS (SHORT TO GROUND)


    1. A0160Y2E10

      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
      P39-1 (BBR+) - Body ground Always 1 MΩ or higher
      P39-2 (BBR-) - Body ground Always 1 MΩ or higher
      for RHD
      Tester Connection Condition Specified Condition
      Q58-1 (BBL+) - Body ground Always 1 MΩ or higher
      Q58-2 (BBL-) - Body ground Always 1 MΩ or higher
      Result
      Result Proceed to
      OK A
      NG (for LHD) B
      NG (for RHD) C

    B

    REPLACE FLOOR WIRE

    C

    REPLACE NO. 2 FLOOR WIRE

    A

  19. CHECK REAR AIRBAG SENSOR (PASSENGER SIDE)


    1. A0162CRE04

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

    2. Interchange the rear airbag sensor (driver side) with the rear airbag sensor (passenger 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 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 B1637 or B1638 is output. A
      DTC B1632 or B1633 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 (PASSENGER SIDE) Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

    A

  20. CHECK SIDE AIRBAG SENSOR (PASSENGER SIDE)


    1. A015Z94E10

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

    4. Interchange the side airbag sensor (driver side) with the side airbag sensor (passenger 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 B1637 or B1638 is output. B
      DTC B1632 or B1633 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 (PASSENGER SIDE) Click here

    A

    USE SIMULATION METHOD TO CHECK Click here

  21. CHECK REAR AIRBAG SENSOR (PASSENGER SIDE)


    1. A0162CRE04

      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 (driver side) with the rear airbag sensor (passenger 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 B1627 is output. B
      DTC B1622 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 (PASSENGER SIDE) Click here

    A

    USE SIMULATION METHOD TO CHECK Click here