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.

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.

CAUTION / NOTICE / HINT

Note:

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

Click here

PROCEDURE

  1. CHECK DTC

    1. Turn the power switch to on (IG), and wait for at least 60 seconds.

    2. Clear the DTCs.

      Click here

      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 power switch off.

    4. Turn the power switch to on (IG), and wait for at least 60 seconds.

    5. Check for DTCs.

      Click here

      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.

    DTC B1795 is not output

    USE SIMULATION METHOD TO CHECK

    Click here

    DTC B1795 is output

  2. REPLACE OCCUPANT DETECTION ECU

    1. Turn the power switch off.

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

    3. Replace the occupant detection ECU.

      Click here

      Tip:

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

    Result

    Proceed to

    NEXT
    NEXT

  3. PERFORM ZERO POINT CALIBRATION

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

    2. Turn the power switch to on (IG).

    3. Perform the zero point calibration.

      Click here

    Result

    Proceed to

    "Zero Point Calibration is complete." is displayed
    "Zero Point Calibration is complete." is displayed

  4. PERFORM SENSITIVITY CHECK

    1. Perform the sensitivity check.

      Click here

      Standard

      27 to 33 kg (59.5 to 72.8 lb)

    Result

    Proceed to

    NEXT
    NEXT

    END (OCCUPANT DETECTION ECU WAS DEFECTIVE)