DTC B1785: Front Occupant Classification Sensor LH Collision Detection: Procedure

1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Using the 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 

1. Using the Techstream, perform Sensitivity Check. Refer to INITIALIZATION .

   Standard

   27 to 33 kg (59.5 to 72.8 lb)

NG → See step   4 

OK: Go to next step 

1. Turn the engine switch on (IG).
2. Clear the DTCs stored in the occupant classification ECU. Refer to DTC CHECK / CLEAR .
3. Clear the DTCs stored in the center airbag sensor assembly. Refer to DTC CHECK / CLEAR .
4. Turn the engine switch off.
5. Turn the engine switch on (IG).
6. Check for DTCs. Refer to DTC CHECK / CLEAR .

   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.

NG → See step   4 

OK → END 

1. Turn the engine switch off.
2. Disconnect the cable from the negative (-) battery terminal.
3. Replace the front seat assembly RH*1 or front seat frame with adjuster assembly RH*2. Refer to REMOVAL .

   HINT: 

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

   *1: for TMMC Made

   *2: for TMC Made

NEXT: Go to next step 

1. Connect the cable to the negative (-) battery terminal.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG).
4. Using the 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 

1. Using the Techstream, perform Sensitivity Check. Refer to INITIALIZATION .

   Standard

   27 to 33 kg (59.5 to 72.8 lb)

NG → See step   8 

OK: Go to next step 

1. Turn the engine switch on (IG).
2. Clear the DTCs stored in the occupant classification ECU. Refer to DTC CHECK / CLEAR .
3. Clear the DTCs stored in the center airbag sensor assembly. Refer to DTC CHECK / CLEAR .
4. Turn the engine switch off.
5. Turn the engine switch on (IG).
6. Check for DTCs. Refer to DTC CHECK / CLEAR .

   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.

NG → See step   8 

OK → END 

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

NEXT: Go to next step 

1. Connect the cable to the negative (-) battery terminal.
2. Connect the Techstream to the DLC3.
3. Turn the engine switch on (IG).
4. Using the Techstream, perform Zero Point Calibration. Refer to INITIALIZATION .

   OK

   "Zero Point Calibration is complete." is displayed.

NEXT: Go to next step 

1. Using the Techstream, perform Sensitivity Check. Refer to INITIALIZATION .

   Standard

   27 to 33 kg (59.5 to 72.8 lb)

NEXT → END