Ô tô Camry 3.5Q - Phần 1 Phần 1 (Tài liệu bằng tiếng anh) gồm: - Kết cấu thân xe - Kết cấu phần điện - CHASSIS - Kích thước xe - Động cơ xe
BODY ELECTRICAL – SRS AIRBAG SYSTEM026BE37TECollision ImpactFront Airbag Sensor (LH or RH)Seat Belt Buckle Switch (Driver)Seat Position SensorCombination Meter D SRS Warning LightCAN (CAN No.1 Bus)Fuel Cut SignalEngine ECUAirbag Sensor AssemblyDriver Seat Belt PretensionerDriver AirbagFront Passenger AirbagFront Passenger Seat Belt PretensionerModels with Dual-stage SRS Airbag SystemBE-192JAIRBAG FOR FRONTAL COLLISION1. GeneralD In conjunction with their impact absorbing structure for frontal collisions, the driver and front passengerSRS airbags deploy simultaneously, and are supplements to the seat belts. The driver and front passengerdual-stage SRS airbags have been designed to help reduce injuries to the head and chest in the event ofa frontal collision. The driver knee airbag restrict the lower parts of the occupant’s body, thus enhancingthe excellent passenger protection provided by the seat belt and front airbag.D The deceleration sensor is enclosed in the front airbag sensor. Due to the deceleration of the vehicle duringa front collision, a distortion is created in the sensor and converted into an electrical signal. Accordingly,the extent of the initial collision can be detected in detail." Front Airbag Operation A(Continued) BEBODY ELECTRICAL – SRS AIRBAG SYSTEM02KBE178TECollision ImpactFront Airbag Sensor (LH or RH)Combination Meter D SRS Warning LightCAN (CAN No.1 Bus)Fuel Cut SignalEngine ECUAirbag SensorAssemblyDriver Seat Belt PretensionerDriver AirbagFront Passenger AirbagFront Passenger Seat Belt PretensionerModels without Dual-stage SRS Airbag SystemBE-193 BODY ELECTRICAL – SRS AIRBAG SYSTEM01YBE111YSeat Position Sensor01YBE93YSeat Position SensorSeat Rail (Lower Rail)Seat Rail (Upper Rail)Seat position is rearward Seat position is forwardBE-1942. Dual-stage SRS Airbag SystemGeneralIn this system, when the front airbag sensors and airbag sensor assembly detect a front collision, the airbagsensor assembly judges the extent of impact, seat position and whether or not the seat belts are fastened,thus optimizing the airbag inflating output by delaying the inflation timing of the 2nd initiator and the 1stinitiator.Seat Position Sensor1) GeneralThe seat position sensor is mounted on the upper rail portion of the driver seat rail, and includes a HallIC and a magnet. This sensor is used to detect the sliding position of the driver seat.2) OperationWhen the seat is in the rearward position, the lower rail portion of the seat rail is close to the seat positionsensor. When it is in the forward position, the distance between the lower rail portion and the sensorbecomes larger.Thus, the magnetic flux of the magnet inside the seat position sensor varies depending on the seatposition. The Hall IC detects this variation and outputs signals to the airbag sensor assembly. BEBODY ELECTRICAL – SRS AIRBAG SYSTEMService TipFollow the procedure indicated below to install the seat position sensor.1) Insert a 1.0 mm (0.04 in.) feeler gauge between the seat position sensor and the lower railportion.2) Tighten the mounting bolt to the specified torque with the seat position sensor pushed downas shown.For details, see the Camry Repair Manual.01YBE94YSeat Position Sensor1.0 mm (0.04 in.)Lower Rail259ESW27Seat BeltEjectorHallICMagnetsAirbag Sensor AssemblyMagnetic FluxPlateSeat Belt Not Fastened Seat Belt FastenedBE-195Seat Belt Buckle SwitchThe seat belt buckle switch detects whether or not the seat belt is fastened.D The non-contact type switch is composed of a Hall IC and two magnets, installed into the front seat innerbelt assembly.D The ejector inside the front seat inner belt assembly and the plate installed to the ejector move when theseat belt is removed or inserted. The movement of the plate changes the magnetic flux density of themagnet.D The Hall IC detects the changes in the magnetic flux density in accordance with the seat belt removalor insertion, and outputs a signal to the airbag sensor assembly (for driver seat) and occupantclassification ECU (for front passenger seat). BODY ELECTRICAL – SRS AIRBAG SYSTEMBE-1963. SRS Driver and Front Passenger AirbagsDual-stage SRS driver and front passenger airbags contain two sets of initiators and propellants. The airbagsensor assembly helps optimize the airbag inflation speed by controlling the inflation timing of theseinitiators.4. Front Airbag SensorFront airbag sensor uses an electrical type deceleration sensor. Based on the deceleration of the vehicle duringa frontal collision, distortion is created in the sensor and converted into an electrical signal. Accordingly, theextent of the initial collision can be accurately detected. . PretensionerModels without Dual-stage SRS Airbag SystemBE -1 93 BODY ELECTRICAL – SRS AIRBAG SYSTEM01YBE 111 YSeat Position Sensor01YBE93YSeat Position SensorSeat. Passenger Seat Belt PretensionerModels with Dual-stage SRS Airbag SystemBE -1 9 2JAIRBAG FOR FRONTAL COLLISION1. GeneralD In conjunction with their impact absorbing