Occupant Classification System (Diagnostics - Introduction): Other Toyota Prius C I facelift

PRECAUTION [12/2013 - ]

1. PRECAUTION FOR DISCONNECTING CABLE FROM NEGATIVE AUXILIARY BATTERY TERMINAL NOTE: When disconnecting the cable from the negative (-) auxiliary battery terminal, initialize the following system(s) after the cable is reconnected: System See Procedure Power Door Lock Control System Refer to «INITIALIZATION [12/2013 - ]»(ref-651173-S02781721552014081900000)
2. IGNITION SWITCH EXPRESSIONS The type of ignition switch used on this model differs according to the specification of the vehicle. The expressions listed in the table below are used in this article. Expression Ignition Switch (Position) Power Switch (Condition) Ignition Switch off LOCK Off (Lock) Ignition Switch ACC ACC On (ACC) Ignition Switch ON (IG) ON (IG) On (IG) Ignition Switch ON (READY) ON (READY) On (Ready)
3. GENERAL PRECAUTION Perform zero point calibration and sensitivity check if any of the following conditions occur: The occupant detection ECU is replaced. Accessories (seatback tray and seat cover, etc.) are installed. The front passenger seat is removed from the vehicle. One of the bolts that is used to install the front passenger seat is removed and reinstalled. The vehicle is brought to the workshop for repair due to an accident or a collision.

Scheme 131

Scheme 132

Scheme 133

INITIALIZATION [12/2013 - ]

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

1. The occupant detection ECU is replaced.
2. Accessories (seatback tray and seat cover, etc.) are installed.
3. The front passenger seat is removed from the vehicle.
4. One of the bolts that install the front passenger seat is removed.
5. The vehicle is brought to the workshop for repair due to an accident or a collision.

1. ZERO POINT CALIBRATION AND SENSITIVITY CHECK Zero point calibration and sensitivity check procedure HINT: Make sure that zero point calibration has finished normally, and then perform the sensitivity check. Check that both of the following conditions are met: The vehicle is parked on a level surface. No objects are placed on the front passenger seat. Adjust the seat position according to the table below. Adjustment Item Position Slide Direction Foremost position Headrest Height Lowest position Recline Angle Follow the prompts on the Techstream screen. Turn the ignition switch off. Connect the Techstream to the DLC3. Turn the ignition switch to ON (IG). Turn the Techstream on. Enter the following menus: Body Electrical / Occupant Detection / Utility / Zero Point Calibration & Sensitivity Check. Perform zero point calibration and sensitivity check by following the prompts on the Techstream screen. OK "Zero Point Calibration is complete." and "Sensitivity Check is complete." are displayed. HINT: Refer to the Techstream operator's manual for further details. If zero point calibration does not complete, replace the separate type front seat cushion spring assembly. When performing sensitivity check, use a solid metal weight (the check result may not appear properly if a liquid weight is used). When performing sensitivity check, place the weight on the seat cushion so that it contacts the seatback. 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 separate type front seat cushion spring assembly.

FAIL-SAFE CHART [12/2013 - ]

1. 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 ignition switch is turned to 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 SRS Seat Cushion Airbag RH Curtain Shield Airbag RH Front Seat Belt Pretensioner RH Adult is seated. ON OFF o o o* o o Child is seated. OFF ON X o X o o Child restraint system is installed. OFF ON X o X o o Vacant OFF ON X o X o o Failure OFF ON X o X o o o: Deployable X: Not deployable *: Not be deployed when the front passenger seat belt has been unfastened.