PRECAUTION
Note. When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. System Name See Procedure Parking Assist Monitor System Refer to INITIALIZATION Side Monitor System (w/ Parking Assist Monitor System) Back Door Closer System Power Back Door System
- INSPECTION PROCEDURE FOR VEHICLE INVOLVED IN ACCIDENT Perform zero point calibration and sensitivity check if any of the following conditions occur: The occupant classification ECU is replaced. Accessories (seatback tray and seat cover, etc.) are installed. The front passenger seat is removed from the vehicle. The passenger airbag ON/OFF indicator ("OFF") comes on when the front passenger seat is not occupied. The vehicle is brought to the workshop for repair due to an accident or a collision.
Note. When disconnecting the cable from the negative (-) battery terminal, initialize the following systems after the cable is reconnected. System Name See Procedure Parking Assist Monitor System Refer to INITIALIZATION Side Monitor System (w/ Parking Assist Monitor System) Back Door Closer System Power Back Door System
- INSPECTION PROCEDURE FOR VEHICLE INVOLVED IN ACCIDENT Perform zero point calibration and sensitivity check if any of the following conditions occur: The occupant classification ECU is replaced. Accessories (seatback tray and seat cover, etc.) are installed. The front passenger seat is removed from the vehicle. The passenger airbag ON/OFF indicator ("OFF") comes on when the front passenger seat is not occupied. The vehicle is brought to the workshop for repair due to an accident or a collision.
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- DESCRIPTION OF OCCUPANT CLASSIFICATION SYSTEM GENERAL DESCRIPTION In the occupant classification system, the occupant classification ECU calculates the weight of the occupant based on signals from the occupant classification sensors. This system recognizes the occupant as a child if it detects a weight of less than 32 kg (70.6 lb), and disables the front passenger airbag and front passenger side knee airbag. This system is mainly comprised of 4 occupant classification sensors that detect the load on the front passenger seat. The occupant classification ECU controls the system, and the passenger airbag ON/OFF indicator indicates the ON/OFF condition of the front passenger airbag and front passenger side knee airbag. OCCUPANT CLASSIFICATION SENSOR The occupant classification sensors are installed on 4 brackets, connecting the seat rail and seat frame. Accordingly, when load is applied to the front passenger seat by an occupant sitting in it, the occupant classification sensors register a distortion. DESCRIPTION FOR PASSENGER AIRBAG ON/OFF INDICATOR This indicator informs the driver whether the occupant classification ECU puts the front passenger airbag and front passenger side knee airbag into an active state or inactive state. If a malfunction occurs in the occupant classification system, the passenger airbag ON/OFF indicator ("OFF") and the SRS warning light come on.
INITIALIZATION
Note. Make sure that the front passenger seat is not occupied before performing the operation.
HINT
Perform zero point calibration and sensitivity check if any of the following conditions occur
- The occupant classification ECU is replaced.
- Accessories (seatback tray and seat cover, etc.) are installed.
- The front passenger seat is removed from the vehicle.
- The passenger airbag ON/OFF indicator ("OFF") comes on when the front passenger seat is not occupied.
- The vehicle is brought to the workshop for repair due to an accident or a collision.
- ZERO POINT CALIBRATION Zero point calibration procedure HINT: Make sure that zero point calibration has finished normally, and then perform the sensitivity check. Check that all of the following conditions are met: The vehicle is parked on a level surface. No objects are placed on the front passenger seat. The front passenger seat belt buckle switch is off. Adjust the seat position according to the table below. Adjustment Item Position Slide Direction Rearmost position Reclining Angle Upright position Headrest Height Lowest position Lifter Height Lowest position Turn the engine switch off. Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Body Electrical / Occupant Detection / Utility / Zero Point Calibration. Perform zero point calibration by following the prompts on the Techstream screen. HINT: Refer to the Techstream operator's service information for further details. If zero point calibration does not complete, replace the front seat assembly RH. OK "Zero Point Calibration is complete." is displayed.
- SENSITIVITY CHECK Sensitivity check procedure Turn the engine switch off. Connect the Techstream to the DLC3. Turn the engine switch on (IG) and turn the Techstream on. Enter the following menus: Body Electrical / Occupant Detection / Utility / Sensitivity Check. Perform sensitivity check by following the prompts on the Techstream screen. HINT: Refer to the Techstream operator's service information for further details. Confirm that the initial sensor reading is within the specified range. Standard -3.2 to 3.2 kg (-7.0 to 7.0 lb) Place a 30 kg (66.1 lb) weight (e.g. a 30 kg (66.1 lb) of lead mass) onto the front passenger seat. Confirm that sensitivity is within the specified range. Standard 27 to 33 kg (59.5 to 72.8 lb) HINT: When performing sensitivity check, use a solid metal weight (the check result may not appear properly if a liquid weight is used). If sensitivity deviates from the specified range, retighten the bolts of the front passenger seat without deforming the seat rail. After performing this procedure, if sensitivity is not within the specified range, replace the front seat assembly RH.
FAIL-SAFE CHART
- FAIL SAFE FUNCTION The following chart shows the status of the controls when the system is normal and malfunctioning. The passenger airbag ON/OFF indicator ("ON" and "OFF") comes on for approximately 4 seconds, then goes off for approximately 2 seconds. Approximately 6 seconds after the engine switch turned on (IG), the passenger airbag ON/OFF indicator will indicate ON or OFF depending on the conditions listed below. Condition ON Indicator OFF Indicator Front Passenger Airbag Front Seat Side Airbag RH Front Seat Belt Pretensioner RH Curtain Shield Airbag RH Adult is seated ON OFF o o o o Child is seated OFF ON - o o o Vacant OFF OFF - o - o Failure OFF ON - o o o HINT: o: Deployable -: Not deployable