Inspection Procedure

NOTE:

w/ Navigation system:
After the engine switch is turned off, the HDD navigation system requires approximately 6 minutes to record various types of memory and settings. As a result, after turning the engine switch off, wait 6 minutes or more before disconnecting the cable from the negative (-) battery terminal.
When disconnecting the cable from the negative (-) battery terminal while performing repairs, some systems need to be initialized after the cable is reconnected (See INITIALIZATION ).

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

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 DTCs (See DTC CHECK / CLEAR ).
  OK: DTC B1795 is not output.
  
  HINT:
  
  Codes other than DTC B1795 may be output at this time, but they are not related to this check.
NG: Go to step 2

OK: USE SIMULATION METHOD TO CHECK (See DIAGNOSIS SYSTEM )
REPLACE NO. 1 SEAT CUSHION ASSEMBLY (OCCUPANT CLASSIFICATION ECU)
1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Using the Techstream, save the ECU data from the ECU which is installed in the vehicle (See REGISTRATION ).
4. Turn the engine switch off.
5. Disconnect the cable from the negative (-) battery terminal, and wait for at least 90 seconds.
6. Replace the No. 1 seat cushion (occupant classification ECU) (See DISASSEMBLY ).
7. Connect the cable to the negative (-) battery terminal, and wait for at least 2 seconds.
8. Turn the engine switch on (IG).
9. Using the Techstream, load the previous ECU data stored in the Techstream 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 DTCs are not cleared at this time, past DTCs will remain.
PERFORM ZERO POINT CALIBRATION
1. Connect the Techstream to the DLC3.
2. Turn the engine switch on (IG).
3. Using the Techstream, perform zero point calibration (See INITIALIZATION ).
4. Turn the engine switch off.
5. Turn the engine switch on (IG).
6. Clear the DTCs stored in the occupant classification ECU (See DTC CHECK / CLEAR ).
  HINT:
  
  If the DTCs are not cleared at this time, past DTCs will remain
PERFORM SENSITIVITY CHECK
1. Perform the sensitivity check (See INITIALIZATION ).
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