OCCUPANT CLASSIFICATION SYSTEM, Diagnostic DTC:B1795

DTC Code DTC Name
B1795 Occupant Classification ECU Malfunction

DESCRIPTION

DTC B1795 is stored when a malfunction is detected in the occupant detection ECU.

DTC No. Detection Item DTC Detection Condition Trouble Area
B1795 Occupant Classification ECU Malfunction Occupant detection ECU malfunction Occupant detection ECU

CAUTION / NOTICE / HINT

Note

After turning the engine 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.

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Tech Tips

When DTC B1650 is stored as a result of troubleshooting for the airbag system, check the DTCs stored in the occupant detection ECU. When DTC B1795 is output, perform troubleshooting for this DTC first.

PROCEDURE


  1. CHECK DTC


    1. Clear the DTCs stored in the occupant detection ECU.

      Click here


      Body Electrical > Occupant Detection > Clear DTCs

    2. Clear the DTCs stored in the airbag ECU assembly.

      Click here


      Body Electrical > SRS Airbag > Clear DTCs

    3. Turn the engine switch off.

    4. Turn the engine switch on (IG), and wait for at least 10 seconds.

    5. Check for DTCs.

      Click here


      Body Electrical > Occupant Detection > Trouble Codes
      OK
      DTC B1795 is not output.

      Tech Tips

      Codes other than DTC B1795 may be output at this time, but they are not related to this check.

    6. Turn the engine switch off.

      Result
      Proceed to
      OK
      NG

    OK

    USE SIMULATION METHOD TO CHECK Click here

    NG

  2. REPLACE OCCUPANT DETECTION ECU


    1. Turn the engine switch off.

    2. Disconnect the cable from the negative (-) battery terminal.

    3. Replace the occupant detection ECU with a new one.

      Click here

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

      Result
      Proceed to
      NEXT

    NEXT

  3. PERFORM ZERO POINT CALIBRATION


    1. Using the GTS, perform Zero Point Calibration.

      Click here


      Body Electrical > Occupant Detection > Utility
      Tester Display
      Zero Point Calibration
      Result
      Proceed to
      NEXT

    NEXT

    END (OCCUPANT DETECTION ECU WAS DEFECTIVE)