AIRBAG SYSTEM, Diagnostic DTC:B1632/81, B1633/81, B1642/81, B1692/81, B1693/81

DTC Code DTC Name
B1632/81 Lost Communication with Rear Airbag Sensor RH
B1633/81 Rear Airbag Sensor Assembly RH Initialization Incomplete
B1642/81 Lost Communication with Side Satellite Sensor Bus RH
B1692/81 Lost Communication with Door Side Airbag Sensor RH
B1693/81 Door Side Airbag Sensor RH Initialization Incomplete

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 center airbag sensor assembly, rear airbag sensor RH and side airbag sensor RH.

The rear airbag sensor RH and side airbag sensor RH 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 stored when a malfunction is detected in the circuit for the side collision sensor RH (to determine deployment of the front seat side airbag assembly RH and curtain shield airbag assembly RH).

DTC No. DTC Detection Condition Trouble Area

B1632/81

B1633/81

B1642/81

B1692/81

B1693/81

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

  • Rear airbag sensor RH malfunction

  • Side airbag sensor RH malfunction

  • Center airbag sensor assembly malfunction

  • No. 2 floor wire

  • Front door wire RH

  • Rear airbag sensor RH

  • Side airbag sensor RH

  • Center airbag sensor assembly

WIRING DIAGRAM

A01EMGXE06

INSPECTION PROCEDURE

PROCEDURE


  1. CHECK CURRENT DTC


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

    2. Check the current DTCs Click here.

      Result
      Result Proceed to
      Current DTC B1633 is output. A
      Current DTC B1642 or 81 is output. B
      Current DTC B1692 or B1693 is output. C
      Current DTC B1632 is output. D
      Current DTC B1632, B1633, B1642, B1692, B1693 or 81 is 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 B1632, B1633, B1642, B1692, B1693 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 RH Click here

    E

    USE SIMULATION METHOD TO CHECK Click here

    A

  2. CHECK HISTORY DTC


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

    2. Check the history DTCs Click here.

      Result
      Result Proceed to
      History DTC B1632 is not output. A
      History DTC B1632 is output. B

      Tech Tips

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


    B

    CHECK REAR AIRBAG SENSOR RH Click here

    A

  3. CHECK CONNECTORS


    1. Turn the ignition 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 RH and side airbag sensor RH. Also check that the connectors that link the No. 2 floor wire and front door wire RH 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 center airbag sensor assembly, rear airbag sensor RH and side airbag sensor RH. Also disconnect the connectors that link the No. 2 floor wire and front door wire RH.

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

      OK
      The terminals are not deformed or damaged.

    NG

    REPLACE WIRE HARNESS

    OK

  4. CHECK NO. 2 FLOOR WIRE (OPEN)


    1. Using SST, connect terminals 17 (BBR+) and 18 (BBR-) of connector B.

      A01EJFRE05

      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
      Tester Connection Condition Specified Condition
      M3-4 (BCR+) - M3-3 (BCR-) Always Below 1 Ω
      Text in Illustration
      *1 Rear Airbag Sensor RH *2 Center Airbag Sensor Assembly
      *3 No. 2 Floor Wire *4

      Front view of wire harness connector

      (to Center Airbag Sensor Assembly)
      *5

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)

      		 *6 Connector B
      *7 Connector C - -

    NG

    REPLACE NO. 2 FLOOR WIRE

    OK

  5. CHECK NO. 2 FLOOR WIRE (SHORT)


    1. A01ELH5E17
      Text in Illustration
      *1 Rear Airbag Sensor RH
      *2 Center Airbag Sensor Assembly
      *3 No. 2 Floor Wire
      *4

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)
      *5 Connector C

      Disconnect SST from connector B.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      M3-4 (BCR+) - M3-3 (BCR-) Always 1 MΩ or higher

    NG

    REPLACE NO. 2 FLOOR WIRE

    OK

  6. CHECK NO. 2 FLOOR WIRE (SHORT TO B+)


    1. A01ELH5E17
      Text in Illustration
      *1 Rear Airbag Sensor RH
      *2 Center Airbag Sensor Assembly
      *3 No. 2 Floor Wire
      *4

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)
      *5 Connector C

      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
      M3-4 (BCR+) - Body ground Ignition switch ON Below 1 V
      M3-3 (BCR-) - Body ground Ignition switch ON Below 1 V

    NG

    REPLACE NO. 2 FLOOR WIRE

    OK

  7. CHECK NO. 2 FLOOR WIRE (SHORT TO GROUND)


    1. A01ELH5E17
      Text in Illustration
      *1 Rear Airbag Sensor RH
      *2 Center Airbag Sensor Assembly
      *3 No. 2 Floor Wire
      *4

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)
      *5 Connector C

      Turn the ignition 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
      Tester Connection Condition Specified Condition
      M3-4 (BCR+) - Body ground Always 1 MΩ or higher
      M3-3 (BCR-) - Body ground Always 1 MΩ or higher

    NG

    REPLACE NO. 2 FLOOR WIRE

    OK

  8. CHECK WIRE HARNESS (OPEN)


    1. Connect the connectors that link the No. 2 floor wire and front door wire RH.

      A01EKY2E06

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

      Note

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

      SST
      09843-18040

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      M3-1 (BDR+) - M3-2 (BDR-) Always Below 1 Ω
      Text in Illustration
      *1 Side Airbag Sensor RH *2 Rear Airbag Sensor RH
      *3

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)

      		 *4

      Front view of wire harness connector

      (to Side Airbag Sensor RH)
      *5 Connector B *6 Connector E

    NG

    CHECK FRONT DOOR WIRE RH (OPEN) Click here

    OK

  9. CHECK WIRE HARNESS (SHORT)


    1. A01EM18E24
      Text in Illustration
      *1 Side Airbag Sensor RH
      *2 Rear Airbag Sensor RH
      *3

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)
      *4 Connector B

      Disconnect SST from connector E.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      M3-1 (BDR+) - M3-2 (BDR-) Always 1 MΩ or higher

    NG

    CHECK FRONT DOOR WIRE RH (SHORT) Click here

    OK

  10. CHECK WIRE HARNESS (SHORT TO B+)


    1. A01EM18E24
      Text in Illustration
      *1 Side Airbag Sensor RH
      *2 Rear Airbag Sensor RH
      *3

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)
      *4 Connector B

      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
      M3-1 (BDR+) - Body ground Ignition switch ON Below 1 V
      M3-2 (BDR-) - Body ground Ignition switch ON Below 1 V

    NG

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

    OK

  11. CHECK WIRE HARNESS (SHORT TO GROUND)


    1. A01EM18E24
      Text in Illustration
      *1 Side Airbag Sensor RH
      *2 Rear Airbag Sensor RH
      *3

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)
      *4 Connector B

      Turn the ignition 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
      Tester Connection Condition Specified Condition
      M3-1 (BDR+) - Body ground Always 1 MΩ or higher
      M3-2 (BDR-) - Body ground Always 1 MΩ or higher

    NG

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

    OK

  12. CHECK REAR AIRBAG SENSOR RH


    1. A01EL3VE08
      Text in Illustration
      *1 Rear Airbag Sensor LH
      *2 Center Airbag Sensor Assembly

      Turn the ignition switch off.

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

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

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

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

    6. Clear the DTCs stored in memory Click here.

    7. Turn the ignition switch off.

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

    9. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1633, B1642, or 81 is output. A
      DTC B1638, B1647, or 82 is output. B
      DTCs B1633, B1642, or 81 and B1638, B1647, or 82 are not output. C

      Tech Tips

      Codes other than DTCs B1633, B1642 or 81 and B1638, B1647 or 82 may be output at this time, but they are not related to this check.


    B

    REPLACE REAR AIRBAG SENSOR RH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

    A

  13. CHECK SIDE AIRBAG SENSOR RH


    1. A01ELMTE06
      Text in Illustration
      *1 Side Airbag Sensor LH
      *2 Rear Airbag Sensor RH

      Turn the ignition switch off.

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

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

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

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

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

    7. Clear the DTCs stored in memory Click here.

    8. Turn the ignition switch off.

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

    10. Check for DTCs Click here.

      Result
      Result Proceed to
      DTCs B1633, B1642, or 81 and B1638, B1647, or 82 are not output. A
      DTC B1638, B1647, or 82 is output. B
      DTC B1633, B1642, or 81 is output. C

      Tech Tips

      Codes other than DTC B1633, B1642 or 81 and B1638, B1647 or 82 may be output at this time, but they are not related to this check.


    B

    REPLACE SIDE AIRBAG SENSOR RH Click here

    C

    REPLACE CENTER AIRBAG SENSOR ASSEMBLY Click here

    A

    USE SIMULATION METHOD TO CHECK Click here

  14. CHECK CONNECTORS


    1. Turn the ignition 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 RH and side airbag sensor RH. Also check that the connectors that link the No. 2 floor wire and front door wire RH 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 RH and side airbag sensor RH. Also disconnect the connectors that link the No. 2 floor wire and front door wire RH.

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

      OK
      The terminals are not deformed or damaged.

    NG

    REPLACE WIRE HARNESS

    OK

  15. CHECK WIRE HARNESS (OPEN)


    1. Connect the connectors that link the No. 2 floor wire and front door wire RH.

      A01EKY2E06

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

      Note

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

      SST
      09843-18040

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      M3-1 (BDR+) - M3-2 (BDR-) Always Below 1 Ω
      Text in Illustration
      *1 Side Airbag Sensor RH *2 Rear Airbag Sensor RH
      *3

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)

      		 *4

      Front view of wire harness connector

      (to Side Airbag Sensor RH)
      *5 Connector B *6 Connector E

    NG

    CHECK FRONT DOOR WIRE RH (OPEN) Click here

    OK

  16. CHECK WIRE HARNESS (SHORT)


    1. A01EM18E24
      Text in Illustration
      *1 Side Airbag Sensor RH
      *2 Rear Airbag Sensor RH
      *3

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)
      *4 Connector B

      Disconnect SST from connector E.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      M3-1 (BDR+) - M3-2 (BDR-) Always 1 MΩ or higher

    NG

    CHECK FRONT DOOR WIRE RH (SHORT) Click here

    OK

  17. CHECK WIRE HARNESS (SHORT TO B+)


    1. A01EM18E24
      Text in Illustration
      *1 Side Airbag Sensor RH
      *2 Rear Airbag Sensor RH
      *3

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)
      *4 Connector B

      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
      M3-1 (BDR+) - Body ground Ignition switch ON Below 1 V
      M3-2 (BDR-) - Body ground Ignition switch ON Below 1 V

    NG

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

    OK

  18. CHECK WIRE HARNESS (SHORT TO GROUND)


    1. A01EM18E24
      Text in Illustration
      *1 Side Airbag Sensor RH
      *2 Rear Airbag Sensor RH
      *3

      Front view of wire harness connector

      (to Rear Airbag Sensor RH)
      *4 Connector B

      Turn the ignition 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
      Tester Connection Condition Specified Condition
      M3-1 (BDR+) - Body ground Always 1 MΩ or higher
      M3-2 (BDR-) - Body ground Always 1 MΩ or higher

    NG

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

    OK

  19. CHECK SIDE AIRBAG SENSOR RH


    1. A01ELMTE06
      Text in Illustration
      *1 Side Airbag Sensor LH
      *2 Rear Airbag Sensor RH

      Turn the ignition switch off.

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

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

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

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

    6. Clear the DTCs stored in memory Click here.

    7. Turn the ignition switch off.

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

    9. Check for DTCs Click here.

      Result
      Result Proceed to
      DTC B1692 or B1693 is output. A
      DTC B1697 or B1698 is output. B
      DTCs B1692 or B1693 and B1697 or 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.


    B

    REPLACE SIDE AIRBAG SENSOR RH Click here

    C

    USE SIMULATION METHOD TO CHECK Click here

    A

  20. CHECK REAR AIRBAG SENSOR RH


    1. A01EL3VE08
      Text in Illustration
      *1 Rear Airbag Sensor LH
      *2 Center Airbag Sensor Assembly

      Turn the ignition switch off.

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

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

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

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

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

    7. Clear the DTCs stored in memory Click here.

    8. Turn the ignition switch off.

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

    10. Check for DTCs Click here.

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


    B

    REPLACE REAR AIRBAG SENSOR RH Click here

    C

    REPLACE CENTER AIRBAG SENSOR ASSEMBLY Click here

    A

    USE SIMULATION METHOD TO CHECK Click here

  21. CHECK REAR AIRBAG SENSOR RH


    1. A01EL3VE08
      Text in Illustration
      *1 Rear Airbag Sensor LH
      *2 Center Airbag Sensor Assembly

      Turn the ignition switch off.

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

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

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

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

    6. Clear the DTCs stored in memory Click here.

    7. Turn the ignition switch off.

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

    9. Check for DTCs Click here.

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


    B

    REPLACE REAR AIRBAG SENSOR RH Click here

    C

    REPLACE CENTER AIRBAG SENSOR ASSEMBLY Click here

    A

    USE SIMULATION METHOD TO CHECK Click here

  22. CHECK FRONT DOOR WIRE RH (OPEN)


    1. Disconnect the front door wire RH connector from the No. 2 floor wire.

      A01ELGFE05

      Tech Tips

      SST 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
      HM1-1 (BDR+) - HM1-2 (BDR-) Always Below 1 Ω
      Text in Illustration
      *1 Side Airbag Sensor RH *2 Rear Airbag Sensor RH
      *3 Front Door Wire RH *4 No. 2 Floor Wire
      *5

      Front view of wire harness connector

      (to No. 2 Floor Wire)

      		 *6

      Front view of wire harness connector

      (to Side Airbag Sensor RH)
      *7 Connector D *8 Connector E

    NG

    REPLACE FRONT DOOR WIRE RH

    OK

    REPLACE NO. 2 FLOOR WIRE

  23. CHECK FRONT DOOR WIRE RH (SHORT)


    1. Disconnect the front door wire RH connector from the No. 2 floor wire.

      A01EK0ME15

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      HM1-1 (BDR+) - HM1-2 (BDR-) Always 1 MΩ or higher
      Text in Illustration
      *1 Side Airbag Sensor RH *2 Rear Airbag Sensor RH
      *3 Front Door Wire RH *4 No. 2 Floor Wire
      *5

      Front view of wire harness connector

      (to No. 2 Floor Wire)

      		 *6 Connector D

    NG

    REPLACE FRONT DOOR WIRE RH

    OK

    REPLACE NO. 2 FLOOR WIRE

  24. CHECK FRONT DOOR WIRE RH (SHORT TO B+)


    1. Turn the ignition switch off.

      A01EK0ME15

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

    3. Disconnect the front door wire RH connector from the No. 2 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
      HM1-1 (BDR+) - Body ground Ignition switch ON Below 1 V
      HM1-2 (BDR-) - Body ground Ignition switch ON Below 1 V
      Text in Illustration
      *1 Side Airbag Sensor RH *2 Rear Airbag Sensor RH
      *3 Front Door Wire RH *4 No. 2 Floor Wire
      *5

      Front view of wire harness connector

      (to No. 2 Floor Wire)

      		 *6 Connector D

    NG

    REPLACE FRONT DOOR WIRE RH

    OK

    REPLACE NO. 2 FLOOR WIRE

  25. CHECK FRONT DOOR WIRE RH (SHORT TO GROUND)


    1. Disconnect the front door wire RH connector from the No. 2 floor wire.

      A01EK0ME15

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      HM1-1 (BDR+) - Body ground Always 1 MΩ or higher
      HM1-2 (BDR-) - Body ground Always 1 MΩ or higher
      Text in Illustration
      *1 Side Airbag Sensor RH *2 Rear Airbag Sensor RH
      *3 Front Door Wire RH *4 No. 2 Floor Wire
      *5

      Front view of wire harness connector

      (to No. 2 Floor Wire)

      		 *6 Connector D

    NG

    REPLACE FRONT DOOR WIRE RH

    OK

    REPLACE NO. 2 FLOOR WIRE