DTC B1796: Sleep Operation Failure of Occupant Classification ECU [06/2015 - ]: Procedure

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

   Refer to DTC CHECK / CLEAR [06/2015 - ]

   Body Electrical > Occupant Detection > Clear DTCs 

   HINT: 

   Use the Techstream 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 on (IG), and wait for at least 60 seconds.
5. Check for DTCs.

   Refer to DTC CHECK / CLEAR [06/2015 - ]

   Body Electrical > Occupant Detection > Trouble Codes 

   Result

   Result	Proceed to
   DTC B1796 is not output	A
   DTC B1796 is output	B

   HINT: 

   DTCs other than DTC B1796 may be output at this time, but they are not related to this check.

Result: 

A 

USE SIMULATION METHOD TO CHECK. Refer to  DIAGNOSIS SYSTEM [06/2015 - ] 

Result: 

B 

See step  2

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 [06/2015 - 11/2018] , or refer to REMOVAL [11/2018 - ]

   HINT: 

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

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  3

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 [06/2015 - ]

   Result

   Proceed to
   NEXT

Result: 

NEXT 

See step  4

1. Perform the sensitivity check.

   Refer to INITIALIZATION [06/2015 - ]

   Standard

   27 to 33 kg (59.5 to 72.8 lb)

   Result

   Proceed to
   NEXT

Result: 

NEXT 

END (OCCUPANT DETECTION ECU WAS DEFECTIVE)