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OCCUPANT CLASSIFICATION SYSTEM, Diagnostic DTC:B1795

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DTC Code DTC Name
B1795 Occupant Classification ECU Malfunction
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DESCRIPTION

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

Troubleshoot DTC B1771 first when both DTCs B1771 and B1795 are present.

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

  • When DTC B1650/32 is stored as a result of troubleshooting the airbag system, perform troubleshooting for DTC B1795 of the occupant classification system.

  • Use the GTS to check for DTCs of the occupant detection ECU, otherwise the DTCs cannot be read.

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CAUTION / NOTICE / HINT

Note:

When disconnecting the cable, some systems need to be initialized after the cable is reconnected.

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PROCEDURE


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    CHECK DTC


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

    2. Clear the DTCs.

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      1. Body Electrical > Occupant Detection > Clear DTCs


      Tip:

      • First clear the DTCs stored in the occupant detection ECU, and then clear the DTCs stored in the airbag sensor assembly.

      • Use the GTS to clear the DTCs of the occupant detection ECU, otherwise the DTCs cannot be cleared.

    3. Turn the ignition switch off.

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

    5. Check for DTCs.

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      1. Body Electrical > Occupant Detection > Trouble Codes


      Result
      Proceed to
      DTC B1795 is not output
      DTC B1795 is output
      Tip:

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


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    REPLACE OCCUPANT DETECTION ECU


    1. Turn the ignition switch off.

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

    3. Replace the occupant detection ECU.

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      Tip:

      Perform the inspection using parts from a normal vehicle when possible.

      Result
      Proceed to
      NEXT

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    PERFORM ZERO POINT CALIBRATION


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

    2. Turn the ignition switch to ON.

    3. Perform the zero point calibration.

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      Result
      Proceed to
      "Zero Point Calibration is complete." is displayed

    • "Zero Point Calibration is complete." is displayedClick here
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    PERFORM SENSITIVITY CHECK


    1. Perform the sensitivity check.

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      Standard
      27 to 33 kg (59.5 to 72.8 lb)
      Result
      Proceed to
      NEXT

    • NEXT

      END (OCCUPANT DETECTION ECU WAS DEFECTIVE)