Inspection Procedure

HINT:

• If troubleshooting (wire harness inspection) is difficult to perform, remove the front passenger seat installation bolts to see the undersurface of the seat cushion.
• In the above case, hold the seat so that it does not fall down. Holding the seat for a long period of time may cause a problem, such as seat rail deformation. Hold the seat only as necessary.

1. CHECK FOR DTC 
   1. Turn the engine switch on (IG).
   2. Clear the DTCs stored in the occupant classification ECU (see DTC CHECK / CLEAR ).
   3. Clear the DTCs stored in the center airbag sensor (see DTC CHECK / CLEAR ).
   4. Turn the engine switch off.
   5. Turn the engine switch on (IG), and wait for at least 10 seconds.
   6. Check for the DTCs (see DTC CHECK / CLEAR ).

      OK: 

      DTC B1795 is not output. 

      HINT:

      Codes other than B1795 may be output at this time, but they are not related to this check.

   OK: USE SIMULATION METHOD TO CHECK (See  DIAGNOSIS SYSTEM  ) 

   NG: Go to next step 

2. REPLACE OCCUPANT CLASSIFICATION ECU 
   1. Connect the intelligent tester (with CAN VIM) to the DLC3.
   2. Turn the engine switch on (IG).
   3. Using the intelligent tester, save the ECU data from the ECU which has been installed on the vehicle (see REGISTRATION ).
   4. Turn the engine switch off.
   5. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
   6. Replace the occupant classification ECU (see DISASSEMBLY ).
   7. Connect the negative (-) terminal cable to the battery.
   8. Turn the engine switch on (IG).
   9. Using the intelligent tester, load the previous ECU data stored into the new ECU (see REGISTRATION ).
   10. Turn the engine switch off.
   11. Turn the engine switch on (IG).
   12. Clear the DTCs stored in the memory (see DTC CHECK / CLEAR ).

       HINT:

       If DTC is not cleared at this time, past DTC will remain.

3. PERFORM SENSITIVITY CHECK 
   1. Perform the sensitivity check (see INITIALIZATION ).

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