DTC B1785: Front Occupant Classification Sensor LH Collision Detection [09/2013 - ]: Procedure

1. Turn the power switch on (IG), and wait for at least 60 seconds.
2. Clear the DTCs. Refer to DTC CHECK / CLEAR [09/2013 - ] .
3. Turn the power switch off.
4. Turn the power switch on (IG), and wait for at least 60 seconds.
5. Check for DTCs. Refer to DTC CHECK / CLEAR [09/2013 - ] .

   OK

   DTC B1785 is not output.

   HINT: 

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

NG → See step   2 

OK → See step   12 

1. Perform the zero point calibration. Refer to INITIALIZATION [09/2013 - ] .

NG → See step   5 

OK: Go to next step 

1. Perform the sensitivity check. Refer to INITIALIZATION [09/2013 - ] .

NG → See step   5 

OK: Go to next step 

1. Clear the DTCs. Refer to DTC CHECK / CLEAR [09/2013 - ] .
2. Turn the power switch off.
3. Turn the power switch on (IG), and wait for at least 60 seconds.
4. Check for DTCs. Refer to DTC CHECK / CLEAR [09/2013 - ] .

   OK

   DTC B1785 is not output.

   HINT: 

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

NG → See step   5 

OK → END 

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 front seat assembly RH. Refer to REMOVAL [09/2013 - ] .

   HINT: 

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

NEXT: Go to next step 

1. Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
2. Turn the power switch on (IG).
3. Perform the zero point calibration. Refer to INITIALIZATION [09/2013 - ] .

NG → See step   9 

OK: Go to next step 

1. Perform the sensitivity check. Refer to INITIALIZATION [09/2013 - ] .

NG → See step   9 

OK: Go to next step 

1. Clear the DTCs. Refer to DTC CHECK / CLEAR [09/2013 - ] .

   HINT: 

   • First clear the DTCs stored in the occupant detection ECU, and then clear the DTCs stored in the center airbag sensor.
   • Use the Techstream to clear the DTCs of the occupant detection ECU, otherwise the DTCs cannot be cleared.
2. Turn the power switch off.
3. Turn the power switch on (IG), and wait for at least 60 seconds.
4. Check for DTCs. Refer to DTC CHECK / CLEAR [09/2013 - ] .

   OK

   DTC B1785 is not output.

   HINT: 

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

NG → See step   9 

OK → END (FRONT SEAT ASSEMBLY RH WAS DEFECTIVE) 

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. Refer to REMOVAL [09/2013 - ] .

   HINT: 

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

NEXT: Go to next step 

1. Connect the cable to the negative (-) auxiliary battery terminal, and wait for at least 2 seconds.
2. Turn the power switch on (IG).
3. Perform the zero point calibration. Refer to INITIALIZATION [09/2013 - ] .

NEXT: Go to next step 

1. Perform the sensitivity check. Refer to INITIALIZATION [09/2013 - ] .

NEXT → END (OCCUPANT DETECTION ECU WAS DEFECTIVE)