DTC B1785: Front Occupant Classification Sensor LH Collision Detection [10/2017 - 10/2020]: Procedure

1. Using the Techstream, perform Zero Point Calibration.

   Refer to INITIALIZATION [10/2017 - 10/2023]

   Body Electrical > Occupant Detection > Utility 

   Tester Display
   Zero Point Calibration

   OK

   "Zero Point Calibration is complete." is displayed.

   Result

   Proceed to
   OK
   NG

Result: 

NG 

See step  5

Result: 

OK 

See step  2

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

   Refer to DTC CHECK / CLEAR [10/2017 - 10/2023]

   Body Electrical > Occupant Detection > Clear DTCs 

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

   Refer to DTC CHECK / CLEAR [10/2017 - 10/2020]

   Body Electrical > SRS Airbag > Clear DTCs 

3. Turn the power switch off.
4. Turn the power switch on (IG), and wait for at least 10 seconds.
5. Check for DTCs.

   Refer to DTC CHECK / CLEAR [10/2017 - 10/2023]

   Body Electrical > Occupant Detection > Trouble Codes 

   OK

   DTC B1785 is not output.

   HINT: 

   Codes other than DTC B1785 may be output at this time, but they are not related to this check.

   Result

   Proceed to
   OK
   NG

Result: 

OK 

END (NORMAL AFTER PERFORMING ZERO POINT CALIBRATION) 

Result: 

NG 

See step  3

1. Turn the power switch off.
2. Disconnect the cable from the negative (-) auxiliary battery terminal.
3. Replace the front seat adjuster assembly RH with a new one.

   Refer to DISASSEMBLY [10/2017 - 10/2023]

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

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

1. Using the Techstream, perform Zero Point Calibration.

   Refer to INITIALIZATION [10/2017 - 10/2023]

   Body Electrical > Occupant Detection > Utility 

   Tester Display
   Zero Point Calibration

   Result

   Proceed to
   NEXT

Result: 

NEXT 

END (FRONT SEAT ADJUSTER ASSEMBLY RH WAS DEFECTIVE) 

1. Turn the power switch off.
2. Disconnect the cable from the negative (-) auxiliary battery terminal.
3. Replace the front seat adjuster assembly RH with a new one.

   Refer to DISASSEMBLY [10/2017 - 10/2023]

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

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  6

1. Using the Techstream, perform Zero Point Calibration.

   Refer to INITIALIZATION [10/2017 - 10/2023]

   Body Electrical > Occupant Detection > Utility 

   Tester Display
   Zero Point Calibration

   Result

   Proceed to
   NEXT

Result: 

NEXT 

END (FRONT SEAT ADJUSTER ASSEMBLY RH WAS DEFECTIVE)