Inspection Procedure

WARNING: This page is about a different car, the 2008 Toyota Yaris. However, it is still accessible from the selected car via links, so may be relevant.

CHECK SRS WARNING LIGHT
1. Turn the ignition switch to the on position and check the SRS warning light condition.
  OK: The SRS warning light does not come on.
NG: Go to step 9

OK: GO TO NEXT STEP

CHECK PASSENGER AIRBAG ON/OFF INDICATOR CONDITION

Turn the ignition switch to the on position.

Check if the passenger airbag ON/OFF indicator correctly indicates the front passenger seat condition.

OK: GO TO NEXT STEP

FRONT PASSENGER SEAT CONDITION

Front passenger seat condition	ON Indicator	OFF Indicator
Vacant	OFF	OFF
Adult is seated	ON	OFF
Child is seated	OFF	ON
Child restraint system is set	OFF	ON
Front passenger occupant classification system failure	OFF	ON

OK: END

NG: GO TO NEXT STEP

PERFORM ZERO POINT CALIBRATION
1. Turn the ignition switch to the lock position.
2. Connect the Techstream to the DLC3.
3. Turn the ignition switch to the on position.
4. Using the Techstream, perform the zero point calibration (See INITIALIZATION ).
  OK: COMPLETE is displayed.
NG: Go to step 5

OK: GO TO NEXT STEP
PERFORM SENSITIVITY CHECK
1. Using the Techstream, perform the sensitivity check (See INITIALIZATION ).
  1. Confirm that nothing is placed on the passenger seat.
  2. Confirm that the beginning sensor reading is within the standard range.
    Standard range: -3.2 to 3.2 kg (-7 to 7 lb)
  3. Place a 30 kg (66.14 lb) weight (e.g. a lead mass) onto the front passenger seat.
  4. Confirm that the sensitivity is within the standard range.
    Standard range: 27 to 33 kg (59.52 to 72.75 lb)
    
    HINT:
    
    When performing the sensitivity check, use a solid metal weight (the check result may not be accurate if a liquid weight is used).
NG: Go to step 5

OK: END
RETIGHTEN FRONT SEAT ASSEMBLY RH BOLT
1. Turn the ignition switch to the lock position.
2. Loosen the 4 installation bolts of the front seat assembly RH.
3. Tighten the 4 installation bolts of the front seat assembly RH to the specified torque.
  Torque: 37 N*m (375 kgf*cm, 27 ft.*lbf)
NG: Go to step 8

OK: GO TO NEXT STEP
PERFORM ZERO POINT CALIBRATION
1. Connect the Techstream to the DLC3.
2. Turn the ignition switch to the on position.
3. Using the Techstream, perform the zero point calibration (See INITIALIZATION ).
  OK: COMPLETE is displayed.
NG: Go to step 8

OK: GO TO NEXT STEP
PERFORM SENSITIVITY CHECK
1. Using the Techstream, perform the sensitivity check (See INITIALIZATION ).
  1. Confirm that nothing is placed on the passenger seat.
  2. Confirm that the beginning sensor reading is within the standard range.
    Standard range: -3.2 to 3.2 kg (-7 to 7 lb)
  3. Place a 30 kg (66.14 lb) weight (e.g. a lead mass) onto the front passenger seat.
  4. Confirm that the sensitivity is within the standard range.
    Standard range: 27 to 33 kg (59.52 to 72.75 lb)
    
    HINT:
    
    When performing the sensitivity check, use a solid metal weight (the check result may not be accurate if a liquid weight is used).
NG: Go to step 8

OK: GO TO NEXT STEP
CHECK CONNECTORS
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. Check that the connectors are properly connected to the occupant classification ECU and the 4 occupant classification sensors.
  OK: The connectors are connected.
4. Disconnect the connectors from the occupant classification ECU and the 4 occupant classification sensors.
5. Check that the connectors are not damaged or deformed.
  OK: The connectors are normal.
NG: REPAIR OR REPLACE WIRE HARNESS AND CONNECTOR

OK: GO TO NEXT STEP
CHECK DTC
1. Connect the connectors to the occupant classification ECU and the 4 occupant classification sensors.
2. Connect the negative (-) terminal cable to the battery.
3. Turn the ignition switch to the on position and wait for at least 60 seconds.
4. Turn the ignition switch to the lock position.
5. Clear the DTCs stored in the memory (See DTC CHECK/CLEAR ).
6. Turn the ignition switch to the on position and wait for at least 60 seconds.
7. Check the DTCs (See DTC CHECK/CLEAR ).
  OK: DTC is not output.
NG: REPLACE CENTER AIRBAG SENSOR ASSEMBLY

OK: GO TO NEXT STEP
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 ON-VEHICLE INSPECTION ).
  HINT:
  
  Perform the inspection using parts from a normal vehicle if possible.
PERFORM ZERO POINT CALIBRATION
1. Connect the negative (-) terminal cable to the battery.
2. Connect the Techstream to the DLC3.
3. Turn the ignition switch to the on position.
4. Using the Techstream, perform the zero point calibration (See INITIALIZATION ).
OK: COMPLETE is displayed.
PERFORM SENSITIVITY CHECK
1. Using the Techstream, perform the sensitivity check (See INITIALIZATION ).
  1. Confirm that nothing is placed on the passenger seat.
  2. Confirm that the beginning sensor reading is within the standard range.
    Standard range: -3.2 to 3.2 kg (-7 to 7 lb)
  3. Place a 30 kg (66.14 lb) weight (e.g. a lead mass) onto the front passenger seat.
  4. Confirm that the sensitivity is within the standard range.
    Standard range: 27 to 33 kg (59.52 to 72.75 lb)
    
    HINT:
    
    When performing the sensitivity check, use a solid metal weight (the check result may not be accurate if a liquid weight is used).