DTC B1796: Sleep Operation Failure of Occupant Classification ECU [12/2012 - ]: Procedure

1. Turn the ignition switch to ON, and wait for at least 60 seconds.
2. Clear the DTCs.

   Refer to DATA LIST / ACTIVE TEST [12/2012 - ]

   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 ignition switch off.
4. Turn the ignition switch to ON, and wait for at least 60 seconds.
5. Check for DTCs.

   Refer to DATA LIST / ACTIVE TEST [12/2012 - ]

   Body Electrical > Occupant Detection > Trouble Codes 

   Result

   Proceed to
   DTC B1796 is not output
   DTC B1796 is output

   HINT: 

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

Result: 

DTC B1796 is not output 

USE SIMULATION METHOD TO CHECK. Refer to  DIAGNOSIS SYSTEM [12/2012 - ] 

Result: 

DTC B1796 is output 

See step  2

1. Turn the ignition switch off.
2. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
3. Replace the occupant detection ECU.

   Refer to DTC CHECK / CLEAR [12/2012 - ]

   HINT: 

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

Result: 

NEXT 

See step  3

1. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
2. Turn the ignition switch to ON.
3. Perform the zero point calibration.

   Refer to INITIALIZATION [12/2012 - ]

   Result

   Proceed to
   "Zero Point Calibration is complete." is displayed

Result: 

"Zero Point Calibration is complete." is displayed 

See step  4

1. Perform the sensitivity check.

   Refer to INITIALIZATION [12/2012 - ]

   Standard

   27 to 33 kg (59.5 to 72.8 lb)

Result: 

NEXT 

END (OCCUPANT DETECTION ECU WAS DEFECTIVE)