OCCUPANT CLASSIFICATION SYSTEM, Diagnostic DTC:B1796

DTC Code DTC Name
B1796 Sleep Operation Failure of Occupant Classification ECU

DESCRIPTION

In sleep mode, the occupant detection ECU reads the condition of each sensor while the power switch is off.

In this mode, if the occupant detection ECU detects an internal malfunction, DTC B1796 is stored.

DTC No. DTC Detection Condition Trouble Area
B1796

  • Occupant detection ECU malfunction

  • Occupant detection ECU

Tech Tips

When DTC B1650/32 is detected as a result of troubleshooting for the airbag system, check the DTCs stored in the occupant detection ECU. When DTC B1796 is output, perform troubleshooting for the DTC.

INSPECTION PROCEDURE

Note

After turning the power switch off, waiting time may be required before disconnecting the cable from the negative (-) auxiliary battery terminal. Therefore, make sure to read the disconnecting the cable from the negative (-) auxiliary battery terminal notices before proceeding with work Click here.

PROCEDURE


  1. REPLACE OCCUPANT DETECTION ECU


    1. Turn the power switch off.

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

    3. Replace the occupant detection ECU Click here.

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


    NEXT

  2. PERFORM ZERO POINT CALIBRATION AND SENSITIVITY CHECK


    1. Using the Techstream, perform Zero Point Calibration and Sensitivity Check Click here.


    NEXT

    END