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DTC B1787: Rear Occupant Classification Sensor LH Collision Detection: Procedure

  1. PERFORM ZERO POINT CALIBRATION 
    1. Connect Techstream to the DLC3.
    2. Turn the ignition switch on (IG).
    3. Using Techstream, perform "zero point calibration". Refer to INITIALIZATION .

      OK

      "Zero Point Calibration is complete." is displayed.

    NG → See step   4 

    OK: Go to next step 

  2. PERFORM SENSITIVITY CHECK 
    1. Using Techstream, perform "sensitivity check". Refer to INITIALIZATION .

      Standard value

      27 to 33 kg (59.52 to 72.75 lb)

    NG → See step   4 

    OK: Go to next step 

  3. CHECK DTC 
    1. Turn the ignition switch on (IG).
    2. Clear the DTCs stored in the occupant classification ECU. Refer to DTC CHECK / CLEAR .
    3. for TMC made:

      Clear the DTCs stored in the center airbag sensor assembly. Refer to DTC CHECK / CLEAR .

    4. except TMC made:

      Clear the DTCs stored in the center airbag sensor assembly. Refer to DTC CHECK / CLEAR .

    5. Turn the ignition switch off.
    6. Turn the ignition switch on (IG).
    7. Check the DTCs. Refer to DTC CHECK / CLEAR .

      OK

      DTC B1787 is not output.

      HINT: 

      Codes other than DTC B1787 may be output at this time, but they are not related to this check.

    OK → END 

    NG: Go to next step 

  4. REPLACE FRONT SEAT ASSEMBLY RH 
    1. Turn the ignition switch off.
    2. Disconnect the negative (-) terminal cable from the battery.
    3. Replace the front seat assembly RH. Refer to REMOVAL for power seat or. Refer to REMOVAL for manual seat).

      HINT: 

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

    NEXT: Go to next step 

  5. PERFORM ZERO POINT CALIBRATION 
    1. Connect the negative (-) terminal cable to the battery.
    2. Connect Techstream to the DLC3.
    3. Turn the ignition switch on (IG).
    4. Using Techstream, perform "zero point calibration". Refer to INITIALIZATION .

      OK

      "Zero Point Calibration is complete." is displayed.

    NG → See step   8 

    OK: Go to next step 

  6. PERFORM SENSITIVITY CHECK 
    1. Using Techstream, perform "sensitivity check". Refer to INITIALIZATION .

      Standard value

      27 to 33 kg (59.52 to 72.75 lb)

    NG → See step   8 

    OK: Go to next step 

  7. CHECK DTC 
    1. Turn the ignition switch on (IG).
    2. Clear the DTCs stored in the occupant classification ECU. Refer to DTC CHECK / CLEAR .
    3. for TMC made:

      Clear the DTCs stored in the center airbag sensor assembly. Refer to DTC CHECK / CLEAR .

    4. except TMC made:

      Clear the DTCs stored in the center airbag sensor assembly. Refer to DTC CHECK / CLEAR .

    5. Turn the ignition switch off.
    6. Turn the ignition switch on (IG).
    7. Check the DTCs. Refer to DTC CHECK / CLEAR .

      OK

      DTC B1787 is not output.

      HINT: 

      Codes other than DTC B1787 may be output at this time, but they are not related to this check.

    OK → END 

    NG: Go to next step 

  8. REPLACE OCCUPANT CLASSIFICATION ECU 
    1. Turn the ignition switch off.
    2. Disconnect the negative (-) terminal cable from the battery.
    3. Replace the occupant classification ECU. Refer to REMOVAL .

    NEXT: Go to next step 

  9. PERFORM ZERO POINT CALIBRATION 
    1. Connect the negative (-) terminal cable to the battery.
    2. Connect Techstream to the DLC3.
    3. Turn the ignition switch on (IG).
    4. Using Techstream, perform "zero point calibration". Refer to INITIALIZATION .

      OK

      "Zero Point Calibration is complete." is displayed.

    NEXT: Go to next step 

  10. PERFORM SENSITIVITY CHECK 
    1. Using Techstream, perform "sensitivity check". Refer to INITIALIZATION .

      Standard value

      27 to 33 kg (59.52 to 72.75 lb)

    NEXT → END