AIRBAG SYSTEM(for Type C), Diagnostic DTC:B162B/85, B163B/86

DTC Code DTC Name
B162B/85 Side Airbag Sensor Assembly No.2 Lost Communication (RH)
B163B/86 Side Airbag Sensor Assembly No.2 Lost Communication (LH)

DESCRIPTION

The circuit for the side collision sensor LH or RH is composed of the airbag sensor assembly, front floor side airbag sensor LH or RH.

The front floor side airbag sensor LH or RH detect impacts to the vehicle and send signals to the airbag sensor assembly to determine if the airbag should be deployed.

DTC B162A/2A or B163A/3A is stored when a malfunction is detected in the circuit for the side collision sensor LH or RH.

DTC No. Detection Item DTC Detection Condition Trouble Area
B162B/85 Side Airbag Sensor Assembly No.2 Lost Communication (RH)

One of the following conditions is met:


  • The airbag sensor assembly detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in the circuit for the side collision sensor RH for 2 seconds.

  • A front floor side airbag sensor RH malfunction.

  • An airbag sensor assembly malfunction.

  • Front floor side airbag sensor RH

  • Floor wire

  • Airbag sensor assembly
B163B/86 Side Airbag Sensor Assembly No.2 Lost Communication (LH)

One of the following conditions is met:


  • The airbag sensor assembly detects a line short circuit signal, open circuit signal, short circuit to ground signal or short circuit to B+ signal in the circuit for the side collision sensor LH for 2 seconds.

  • A front floor side airbag sensor LH malfunction.

  • An airbag sensor assembly malfunction.

  • Front floor side airbag sensor LH

  • Floor wire

  • Airbag sensor assembly

WIRING DIAGRAM

Figure 1. for RH Side:

B00272KE01
*a BFR+
*b BFR-
*c Front Floor Side Airbag Sensor RH
*d Airbag Sensor Assembly

Figure 2. for LH Side:

B00272KE02
*a BFL+
*b BFL-
*c Front Floor Side Airbag Sensor LH
*d Airbag Sensor Assembly

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

  • When disconnecting the cable from the negative (-) battery terminal while performing repairs, some systems need to be initialized after the cable is reconnected.

    Click here

  • After replacing the airbag sensor assembly, refer to initialization.

    Click here

PROCEDURE


  1. CHECK DTC


    1. Turn the ignition switch to ON.

    2. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    3. Turn the ignition switch off.

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

    5. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes
      Result
      Proceed to
      DTC B163A/3A is output
      DTC B162A/2A is output
      DTC B162A/2A and B163A/3A are not output

      Tech Tips

      Codes other than DTC B162A/2A and B163A/3A may be output at this time, but they are not related to this check.


    DTC B162A/2A is output

    CHECK CONNECTION OF CONNECTORS Click here

    DTC B162A/2A and B163A/3A are not output

    USE SIMULATION METHOD TO CHECK Click here

    DTC B163A/3A is output

  2. CHECK CONNECTION OF 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 airbag sensor assembly and front floor side airbag sensor LH.

      Result
      Proceed to
      The connectors are properly connected
      The connectors are not properly connected

    The connectors are not properly connected

    CONNECT CONNECTORS PROPERLY

    The connectors are properly connected

  3. CHECK CONNECTORS


    1. Disconnect the connectors from the airbag sensor assembly and front floor side airbag sensor LH.

    2. B0027QSC30
      *1 Front Floor Side Airbag Sensor LH
      *2 Airbag Sensor Assembly
      *3 Floor Wire

      Check that the connectors (on the airbag sensor assembly side and front floor side airbag sensor LH side) are not damaged.

      Result
      Proceed to
      The connectors are not deformed or damaged
      The connectors are deformed or damaged

    The connectors are deformed or damaged

    REPLACE FLOOR WIRE

    The connectors are not deformed or damaged

  4. CHECK FRONT FLOOR SIDE AIRBAG SENSOR LH


    1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

      B0028UNC01
      *1 Front Floor Side Airbag Sensor LH *2 Airbag Sensor Assembly
      *3 Floor Wire *4 Connector C
      *5 Connector B *6 Service Wire
      *a

      Front view of wire harness connector

      (to Front Floor Side Airbag Sensor LH)

      		 *b

      Rear view of wire harness connector

      (to Airbag Sensor Assembly)

    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
      N39-2 (BFL+) - Body ground Ignition switch ON Below 1 V
      N39-1 (BFL-) - Body ground Ignition switch ON Below 1 V

    4. Turn the ignition switch off.

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

    6. Using a service wire, connect terminals 21 (BCL+) and 22 (BCL-) of connector B.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N39-2 (BFL+) - N39-1 (BFL-) Always Below 1 Ω

    8. Disconnect the service wire from connector B.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N39-2 (BFL+) - N39-1 (BFL-) Always 1 MΩ or higher
      N39-2 (BFL+) - Body ground Always 1 MΩ or higher
      N39-1 (BFL-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  5. CHECK FRONT FLOOR SIDE AIRBAG SENSOR LH


    1. Connect the connectors to the airbag sensor assembly.

    2. B002597C47
      *1 Front Floor Side Airbag Sensor RH
      *2 Airbag Sensor Assembly

      Interchange the front floor side airbag sensor LH with RH and connect the connectors to them.

    3. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

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

    5. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    6. Turn the ignition switch off.

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

    8. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes
      Result
      Proceed to
      DTC B162A/2A is output
      DTC B163A/3A is output
      DTC B162A/2A and B163A/3A are not output

      Tech Tips

      Codes other than DTC B162A/2A and B163A/3A and B1637/82 may be output at this time, but they are not related to this check.

    9. Turn the ignition switch off.

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

    11. Return the front floor side airbag sensor RH and LH to their original positions and connect the connectors to them.


    DTC B162A/2A is output

    REPLACE FRONT FLOOR SIDE AIRBAG SENSOR LH Click here

    DTC B163A/3A is output

    REPLACE AIRBAG SENSOR ASSEMBLY Click here

    DTC B162A/2A and B163A/3A are not output

    USE SIMULATION METHOD TO CHECK Click here

  6. CHECK CONNECTION OF 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 airbag sensor assembly and front floor side airbag sensor RH.

      Result
      Proceed to
      The connectors are properly connected
      The connectors are not properly connected

    The connectors are not properly connected

    CONNECT CONNECTORS PROPERLY

    The connectors are properly connected

  7. CHECK CONNECTORS


    1. Disconnect the connectors from the airbag sensor assembly and front floor side airbag sensor RH.

    2. B0025AOC01
      *1 Front Floor Side Airbag Sensor RH
      *2 Airbag Sensor Assembly
      *3 Floor Wire

      Check that the connectors (on the airbag sensor assembly side and front floor side airbag sensor RH side) are not damaged.

      Result
      Proceed to
      The connectors are not deformed or damaged
      The connectors are deformed or damaged

    The connectors are deformed or damaged

    REPLACE FLOOR WIRE

    The connectors are not deformed or damaged

  8. CHECK FRONT FLOOR SIDE AIRBAG SENSOR RH


    1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

      B00296OC01
      *1 Front Floor Side Airbag Sensor RH *2 Airbag Sensor Assembly
      *3 Floor Wire *4 Connector C
      *5 Connector B *6 Service Wire
      *a

      Front view of wire harness connector

      (to Front Floor Side Airbag Sensor RH)

      		 *b

      Rear view of wire harness connector

      (to Airbag Sensor Assembly)

    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
      N38-2 (BFR+) - Body ground Ignition switch ON Below 1 V
      N38-1 (BFR-) - Body ground Ignition switch ON Below 1 V

    4. Turn the ignition switch off.

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

    6. Using a service wire, connect terminals 20 (BCR+) and 19 (BCR-) of connector B.

      Note

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

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N38-2 (BFR+) - N38-1 (BFR-) Always Below 1 Ω

    8. Disconnect the service wire from connector B.

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

      Standard Resistance
      Tester Connection Condition Specified Condition
      N38-2 (BFR+) - N38-1 (BFR-) Always 1 MΩ or higher
      N38-2 (BFR+) - Body ground Always 1 MΩ or higher
      N38-1 (BFR-) - Body ground Always 1 MΩ or higher
      Result
      Proceed to
      OK
      NG

    NG

    REPLACE FLOOR WIRE

    OK

  9. CHECK FRONT FLOOR SIDE AIRBAG SENSOR RH


    1. Connect the connectors to the airbag sensor assembly.

    2. B00288PC09
      *1 Front Floor Side Airbag Sensor LH
      *2 Airbag Sensor Assembly

      Interchange the front floor side airbag sensor LH with RH and connect the connectors to them.

    3. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.

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

    5. Clear the DTCs stored in memory.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    6. Turn the ignition switch off.

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

    8. Check for DTCs.

      Click here


      Body Electrical > SRS Airbag > Trouble Codes
      Result
      Proceed to
      DTC B163A/3A is output
      DTC B162A/2A is output
      DTC B162A/2A and B163A/3A are not output

      Tech Tips

      Codes other than DTC B162A/2A and B163A/3A may be output at this time, but they are not related to this check.

    9. Turn the ignition switch off.

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

    11. Return the front floor side airbag sensor LH and RH to their original positions and connect the connectors to them.


    DTC B163A/3A is output

    REPLACE FRONT FLOOR SIDE AIRBAG SENSOR RH Click here

    DTC B162A/2A is output

    REPLACE AIRBAG SENSOR ASSEMBLY Click here

    DTC B162A/2A and B163A/3A are not output

    USE SIMULATION METHOD TO CHECK Click here