Inspection Procedure

WARNING: This page is about a different car, the 2005 Toyota Sienna. However, it is still accessible from the selected car via links, so may be relevant.

PERFORM ZERO POINT CALIBRATION
1. Connect the hand-held tester to the DLC3.
2. Turn the ignition switch to the ON position.
3. Using the hand-held tester, perform "Zero point calibration" (see INITIALIZATION ).
  OK:
  
  The "COMPLETED" is displayed.
1. NG: Go to step 4
2. OK: GO TO NEXT STEP
PERFORM SENSITIVITY CHECK
1. Using the hand-held tester, perform "Sensitivity check" (see INITIALIZATION ).
  Standard value: 27 to 33 kg (59.52 to 72.75 lb)
1. NG: Go to step 4
2. OK: GO TO NEXT STEP
CHECK DTC
1. Turn the ignition switch to the ON position.
2. Clear the DTCs stored in memory (see DTC CHECK/CLEAR ).
  HINT:
  
  First clear DTCs stored in the occupant classification ECU and then in the airbag sensor assy center.
3. Turn the ignition switch to the LOCK position.
4. Turn the ignition switch to the ON position.
5. Using the hand-held tester, check the DTCs (see DTC CHECK/CLEAR ).
  OK:
  
  DTC B1785 is not output.
HINT:

Codes other than code B1785 may be output at this time, but they are not related to this check.
1. NG: Go to step 4
2. OK: END
REPLACE SEAT ADJUSTER FRAME ASSY
1. Turn the ignition switch to the LOCK position.
2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
3. Replace the seat adjuster frame assy (see OVERHAUL ).
HINT:

Perform the inspection using parts from a normal vehicle if possible.
1. NEXT: Go to next step.
PERFORM ZERO POINT CALIBRATION
1. Connect the negative (-) terminal cable to the battery.
2. Connect the hand-held tester to the DLC3.
3. Turn the ignition switch to the ON position.
4. Using the hand-held tester, perform "Zero point calibration" (see INITIALIZATION ).
  OK:
  
  The "COMPLETED" is displayed.
1. NG: Go to step 8
2. OK: GO TO NEXT STEP
PERFORM SENSITIVITY CHECK
1. Using the hand-held tester, perform "Sensitivity check" (see INITIALIZATION ).
  Standard value: 27 to 33 kg (59.52 to 72.75 lb)
1. NG: Go to step 8
2. OK: GO TO NEXT STEP
CHECK DTC
1. Turn the ignition switch to the ON position.
2. Clear the DTCs stored in memory (see DTC CHECK/CLEAR ).
  HINT:
  
  First clear DTCs stored in the occupant classification ECU and then in the airbag sensor assy center.
3. Turn the ignition switch to the LOCK position.
4. Turn the ignition switch to the ON position.
5. Using the hand-held tester, check the DTCs (see DTC CHECK/CLEAR ).
  OK:
  
  DTC B1785 is not output.
HINT:

Codes other than code B1785 may be output at this time, but they are not related to this check.
1. NG: Go to step 8
2. OK: END
REPLACE OCCUPANT CLASSIFICATION ECU
1. Turn the ignition switch to the LOCK position.
2. Disconnect the negative (-) terminal cable from the battery, and wait for at least 90 seconds.
3. Replace the occupant classification ECU (see REPLACEMENT ).
1. NEXT: Go to next step.
PERFORM ZERO POINT CALIBRATION
1. Connect the negative (-) terminal cable to the battery.
2. Connect the hand-held tester to the DLC3.
3. Turn the ignition switch to the ON position.
4. Using the hand-held tester, perform "Zero point calibration" (see INITIALIZATION ).
  OK:
  
  The "COMPLETED" is displayed.
1. NEXT: Go to next step.
PERFORM SENSITIVITY CHECK
1. Using the hand-held tester, perform "Sensitivity check" (see INITIALIZATION ).
  Standard value: 27 to 33 kg (59.52 to 72.75 lb)
1. NEXT: END