Effectiveness of the VVTi System
Earliest Timing Latest Timing EX IN Earliest Timing Latest Timing EX IN Eliminating overlap to reduce blow back to the intake side. Eliminating overlap to reduce blow back to the intake side. Retarding the intake IN valve close timing for volumetric efficiency To Advance improvement. Increasing overlap increases internal EGR, reducing pumping loss. In Low to Medium Speed Range with Heavy Load Advancing the intake valve close timing for volumetric efficiency improvement. Improved torque in low...
Crankshaft Bearing and Crankshaft Bearing Cap
The crankshaft bearing is made of aluminum alloy. As the connecting rod bearings, the lining surface of the crankshaft bearings is micro-grooved to realize an optimal amount of oil clearance. As a result, cold-engine cranking performance is improved and engine vibration is reduced. The upper main bearing has an oil groove around its inside circumference. The crankshaft bearing caps are tightened using 4 plastic region tightening bolts for each journal. In addition, each cap is tightened...
Without DAC
The DAC operates when all of the following conditions have been met The DAC operates when all of the following conditions have been met Shift lever is in the L or R position. Accelerator pedal and brake pedal are not depressed. Descending a hill at a vehicle speed of 25 km h 16 mph or less.
Connecting Rod and Connecting Rod Bearing
Connecting rods that have been forged for high strength are used for weight reduction. Knock pins are used at the mating surfaces of the bearing caps of the connecting rod to minimize the shifting of the bearing caps during assembly. The connecting rods and caps are made of high-strength steel for weight reduction. Nutless-type plastic region tightening bolts are used on the connecting rods for a lighter design. An aluminum bearing is used for the connecting rod bearings. The connecting rod...
Layout of Main Components Rxr
Master Cylinder Pressure Sensor Master Cylinder Pressure Sensor Master Cylinder amp Brake Booster Brake Fluid Level Warning Switch Master Cylinder amp Brake Booster Brake Fluid Level Warning Switch
Brake Actuator
The brake actuator consists of the actuator portion, skid control ECU, solenoid relay, pump motor, and master cylinder pressure sensor. The actuator portion consists of 10 solenoid valves, 2 pumps, 2 reservoirs, and master cylinder pressure sensor. The 10 solenoid valves consist of 2 master cylinder cut solenoid valves 1 , 2 , 4 pressure holding solenoid valves 3 , 4 , 5 , 6 , and 4 pressure reduction solenoid valves 7 , 8 , 9 , 10 .
Starting Off
The system ensures start-off performance by optimally distributing the entire drive torque, which is transmitted by the engine, to the front and rear wheels. To prevent the tight corner braking phenomenon from occurring during low-speed cornering, the system reduces the amount of torque distribution to the rear wheels.
Service Tip Hhj
When replacing the transponder key ECU or adding a new ignition key, the key's recognition code must be registered. When the transponder key ECU has been replaced, the hand-held tester is necessary for the key registration. At this time, the total number of keys that can be registered is three master key two, sub key one . The recognition codes of additional keys must be registered. At this time, the total number of keys that can be registered is eight master key five, sub key three . For...
Flex Lockup Clutch Control
The flex lock-up clutch control is used. This flex lock-up clutch control regulates the solenoid valve DSL as an intermediate mode between the ON OFF operation of the lock-up clutch. The flex lock-up clutch control operates in the 3rd and 4th gears in the D range during acceleration, and in the 3rd and 4th gears in the D range, and in the 3rd gear in the 3 range during deceleration. During the acceleration, the partition control of the power transmission between the lock-up clutch and torque...
SERPENTINE BELT DRIVE SYSTEM General 1
Accessory components are driven by a serpentine belt consisting of a single V-ribbed belt. It reduces the overall engine length, weight and the number of engine parts. An automatic tensioner eliminates the need for tension adjustment.
Intake and Exhaust VVT Sensors General
The MRE Magnetic Resistance Element type intake and exhaust VVT sensors are used. To detect the camshaft position, a timing rotor that is secured to the camshaft in front of the VVT controller is used to generate 6 3 Hi Output, 3 Lo Output pulses for every 2 revolutions of the crankshaft.
DTC of SRS Airbag System
There are 2 types of DTCs of the SRS airbag system 5-digit and 2-digit. The 5-digit DTC can be read by connecting a hand-held tester to the DLC3 terminal. The 2-digit DTC can be read through the blinking of the SRS warning light with the SST 09843-18040 connected to the TC and CG terminals of the DLC3. If the SRS airbag deploys, the airbag sensor assembly will turn on the SRS warning light. However, it is different from the ordinary diagnosis function that a DTC will not be memorized. The SRS...
Front Wheel Skid Restraining Control Making a Right Turn
In the front wheel skid restraining control, the brakes of the front wheels and the rear wheel of the inner circle of the turn are applied. Also, depending on whether the brake is ON or OFF and the condition of the vehicle, there are circumstances in which the brake might not be applied to the wheels even if those wheels are targeted for braking. The diagram below shows the hydraulic circuit in the pressure increase mode, as it controls the front wheel skid condition while the vehicle makes a...
Piston
The piston is made of aluminum alloy. The piston head portion uses a taper squish shape to accomplish fuel combustion efficiency. The piston skirt is coated with resin to reduce the friction loss. The groove of the top ring is coated with alumite to ensure wear resistance. By increasing the machining precision of the cylinder bore diameter, the outer diameter of the piston is made into one size.
Seat Position Sensor for Driver
The seat position sensor which is attached to the seat rail of the driver seat detects the sliding position of the seat. In addition, the shielding plate is installed on this seat rail to make the seat position sensor judge the seat position. The seat position sensor uses a Hall IC for its sensor and has a magnet portion on its opposite side. The seat position sensor judges that the seat position is rearward if the sensor is located over the shielding plate, and the seat position is forward if...
Evaporator
A revolutionary super-slim structure evaporator is used. Placing the tanks at the top and the bottom of the evaporator and adopting a micropore tube construction have realized the following effects The heat exchanging efficiency is improved. The temperature distribution is made more uniform. The evaporator is made thinner 58 mm 2.3 in. 38 mm 1.5 in. The evaporator body has been coated with a type of resin that contains an antibacterial agent in order to minimize the source of foul odor and the...
Reducing Wind Noise
Wind noise has been reduce through the adoption of the following constructions The offset between various areas of the body and the glass surface has been reduced. A hood-to-fender seal has been provided along the parting line between the hood panel and the fender panel. A weatherstrip has been provided along the parting line between the front door and the rear door. Airflow routing plates have been provided to both sides of the cowl louver, in order to properly route the airflow. A fender seal...
Function of Solenoid Valves SL SL SL and SLT
Clutch and brake engagement pressure control Lock-up clutch pressure control
Solenoid Valves SL SL SL and SLT General
In order to provide a hydraulic pressure that is proportion to current that flows to the solenoid coil, the solenoid valves SL1, SL2, SL3, and SLT linearly control the line pressure, and clutch and brake engagement pressures based on the signals received from the ECM. The solenoid valves SL, SL2, SL3, and SLT have the same basic structure.
Shift Control in UphillDownhill Traveling General
This control helps minimize the gear shifting when the driver operates the accelerator pedal while driving on a winding uphill or downhill road in order to ensure a smooth drive. When the ECM detects uphill travel, it prohibits upshifting to the 4th after downshifting to the 3rd. If a signal indicating that the driver has operated the brake pedal is input while the ECM detects downhill travel, it downshifts from the 4th to 3rd. The actual acceleration calculated from the speed sensor signal is...
Description Sbc
A GF1A type transfer that is compact and lightweight is used on the 4WD models. Oil Capacity Liters US qts, Imp. qts Weight shows the figure with the oil fully filled. Weight shows the figure with the oil fully filled.
FUEL SYSTEM General
The fuel returnless system is used to reduce evaporative emissions. A fuel cut control is used to stop the fuel pump when the SRS airbag is deployed in a front or side collision. For details, see page EG-53. A quick connector is used in the fuel main pipe to improve serviceability. The 12-hole type fuel injector is used. The ORVR On-board Refueling Vapor Recovery system is used. For details, see page EG-54. Fuel returnless system is used to reduce the evaporative emission. As shown below, by...
ENGINE CONTROL SYSTEM General
The engine control system for the 2AZ-FE engine has the following systems. The engine control system for the 2AZ-FE engine has the following systems. An L-type SFI system directly detects the intake air volume with a hot-wire type mass air flow meter. The fuel injection system is a sequential multiport fuel injection system. Ignition timing is determined by the ECM based on signals from various sensors. The ECM corrects ignition timing in response to engine knocking. ETCS-i Electronic Throttle...
Batter Temperature Sensor
The battery temperature sensor is built into the battery current sensor. The battery characteristic battery internal resistance of taking in current for charging varies according to battery electrolyte temperature. If the electrolyte temperature is too low or too high, the battery internal resistance will increase, resulting in early deterioration. To prevent this, the battery temperature sensor changes its resistance as shown below to detect the temperature.
Heater Control Cable
The '06 models use two cables on pulleys that are always operated in the pulling direction to operate the heater control panel and damper. This cable is circular, and is placed around the cable pulleys that are provided at the heater control panel and the damper. The operation of the heater control panel is transmitted to the damper via the control cable, which always moves in the pulling direction. Due to the consistent action point of the pulleys, the fluctuation of the operating effort has...
Layout Of Can Components
If a malfunction occurs on CAN communication line, the ECU that is connected to CAN communication line stores the DTCs Diagnostic Trouble Codes in its memory. There are 2-digit DTCs and 5-digit DTCs for CAN communication. - The 5-digit DTCs can be read by connecting a hand-held tester to the DLC3. - The 2-digit DTCs can be read by connecting the SST 09843-18040 to TC and CG terminals of the DLC3. For details, see the 2006 RAV4 Repair Manual Pub. No. RM01M1U .
COOLING SYSTEM General
The cooling system is a pressurized, forced-circulation type. A thermostat with a bypass valve is located on the water inlet housing to maintain suitable temperature distribution in the cooling system. A cooling fan control system in which the ECM optimally controls cooling fan speed is used. For details, see page EG-129. An air bleeder plug is provided on the water inlet assembly to improve the efficiency of changing the engine coolant. For details, refer to the 2006 RAV4 Repair Manual Pub....
Biisl
Sensor Element Zirconia Planar Type Air-fuel Ratio Sensor The compact and lightweight mass air flow meter, which is a plug-in type, allows a portion of the intake air to flow through the detection area. By directly measuring the mass and the flow rate of the intake air, the detection precision is ensured and the intake air resistance is reduced. This mass air flow meter has a built-in intake air temperature sensor. In the conventional type knock sensor resonant type , a vibration plate which...
CONSTRUCTION General
The electric control coupling is placed forward of the differential. A carrier and a retainer made of aluminum are used for weight reduction.
I CAN Controller Area Network
The CAN Controller Area Network is a serial data communication for real time application. It is multiplex communication to be equipped for a vehicle and has communication speed 500 kbps and the function to detect malfunction. The communication wire uses a twisted-pair wire. The bus line has a high line 2.5 V to 3.5 V of voltage is applied and a low line 1.5 V to 2.5 V of voltage is applied . The CAN system in the '06 models is used to connect the following ECUs and parts via junction connector...
Uf And Ue Automatic Transaxles Description
For the 2AZ-FE engine models, U140F for 4WD model and U241E for 2WD model automatic transaxles are used. These automatic transaxles are compact and high capacity 4-speed Super ECT Electronic Controlled Transaxle . A low-viscosity type transmission fluid Toyota Genuine ATF WS is used for all the automatic transaxles. U140F Automatic Transaxle U241E Automatic Transaxle U140F Automatic Transaxle U241E Automatic Transaxle Fluid Capacity Liters US qts, Imp. qts 2 Weight shows the figure with the...
Auto LSD Function Only for WD models Outline of Auto LSD
The Auto LSD achieves the equivalent functions of an LSD Limited Slip Differential through the use of a traction control function. For this reason, the contents of brake control are the same between Auto LSD and TRAC. When the driver presses the Auto LSD switch, this function achieves the LSD effect by regulating the hydraulic pressure that acts on the drive wheels and controlling the engine output in accordance with the amount of pedal effort applied on the accelerator. TRAC enhances the...
RSES Rear Seat Entertainment System 1
The RSES with which the rear seat occupants can enjoy a video DVD Digital Versatile Disc has been made available as optional equipment on the Limited grade for the 2GR-FE engine model. The RSES consists of a 9-inch wide LCD Liquid Crystal Display , a DVD player that are located under the roof, and a remote controller. The RSES is operated by the remote controller.
Iairbag For Rollover
When the vehicle is rolling sideways, the RSCA Roll Sensing of Curtain shield Airbag helps to reduce the impact that is applied to the occupants by operating the left and right curtain shield airbags and the seat belt pretensioners for the driver and front passenger. If the vehicle rolls over due to an incline, the two roll rate sensors and lateral deceleration sensor that are built into the airbag sensor assembly detect the vehicle's roll angle, rotation speed and lateral deceleration speed....
System Operation
The shift lock ECU uses the P detection switch to detect the shift lever position, and receives input signals from the stop light switch and ignition switch. Upon receiving these signals, the shift lock ECU turns ON the key interlock solenoid and the shift lock solenoid in order to release the key interlock and shift lock. A shift lock override button, which manually overrides the shift lock mechanism, is used. System Diagram 4
Layout of Main Components Dpc
Transmission Control Switch Transmission Control Switch
Air Cleaner
A nonwoven, full-fabric type air cleaner element is used. A charcoal filter, which adsorbs the HC that accumulates in the intake system when the engine is stopped, is used in the air cleaner case in order to reduce evaporative emissions. This filter is maintenance-free. Along with the use of the air intake control system, an air intake control valve is provided on the air cleaner case. For details, see page EG-128. Resonators have been provided to reduce the amount of intake air sound. Air...
CHARGING SYSTEM General
A compact and lightweight segment conductor type generator is used. For details of the segment conductor type generator, see page EG-25.
Intake Camshaft Timing Oil Control Valve
To VVT-i Controller To VVT-i Controller To VVT-i Controller To VVT-i Controller The advance and retard sides of the exhaust camshaft timing oil control valve are reverse of the intake side. When the camshaft timing oil control valve is positioned as illustrated below by the advance signals from the ECM, the resultant oil pressure is applied to the timing advance side vane chamber to rotate the camshaft in the timing advance direction.
Daytime Running Light System
The daytime running light system is standard equipment on the Canada models and is available as optional equipment on the U.S.A. models. This system is designed to automatically activate the headlights at reduced brightness high beam during the daytime to keep the car highly visible to other vehicles. This system is controlled by the main body ECU. This system is enabled when the conditions given below are met 3 Light control switch is OFF.
Layout Of Main Components Etu
Front Passenger's Side Power Window Motor Front Passenger's Side Power Window Switch Driver's Side Power Window Motor Power Window ECU Front Passenger's Side Power Window Motor Front Passenger's Side Power Window Switch Driver's Side Power Window Motor Power Window ECU
Oil Capacity
6.5 Liters 6.9 US pts, 5.7 Imp. qts 6.1 Liters 6.4 US pts, 5.4 Imp. qts 5.7 Liters 6.0 US pts, 5.0 Imp. qts
BUS Connector Only for Models with Automatic Air Conditioning
A BUS connector is used in the wire harness connection that connects the servomotor from the air conditioning ECU. To Air Mix Servomotor Front Passenger Side To Air Mix Servomotor Front Passenger Side The BUS connector has a built-in communication drive IC, which communicates with each servomotor connector, actuates the servomotor, and has a position detection function. This enables bus communication for the servomotor wire harness to realize a more lightweight construction and the reduced...
With Air Conditioning Models
Only for Models with Automatic Air Conditioning Manual Air Conditioning Models oinbei9y Manual Air Conditioning Models oinbei9y Air Mix Servomotor Front Passenger Side Air Mix Servomotor Front Passenger Side MODE POSITION AND DAMPER OPERATION
Auto LSD Operation
The skid control ECU determines that the vehicle is in a state in which the Auto LSD can operate, by using various sensors and switches to detect the operating conditions of the Auto LSD switch, shift position, accelerator pedal, and brake pedal. When the vehicle is in a state in which the Auto LSD can operate, the skid control ECU effects hydraulic pressure control of the wheel cylinder at the wheel with the faster wheel speed so that the wheel speeds of the right and left drive wheels will...
VVTi Controller
This controller consists of the housing driven by the timing chain and the vane coupled with the intake and exhaust camshafts. The intake side uses a VVT-i controller with 3 vanes, and the exhaust side uses one with 4 vanes. When the engine stops, the intake side VVT-i controller is locked on the most retarded angle side by the lock pin, and the exhaust side VVT-i controller is locked on the most advanced angle side. This ensures excellent engine startability. The oil pressure sent from the...
Operation Fwr
When the steering box moves during a collision primary collision , the intermediate shaft contracts, thus helping reduce the possibility of the steering column and the steering wheel protruding into the cabin. When a collision impact is transmitted to the steering wheel secondary collision , the steering wheel and the driver's airbag help absorb the impact. In addition, the breakaway bracket separates, and the column tube contracts. At this time, the friction resistance of the sliding portion,...
Function of Solenoid Valve DSL
The solenoid valve DSL controls the B2 control valve via the C2 lock valve when the transaxle is shifted in the R or L position. During lock-up, the lock-up relay valve is controlled via the C2 lock valve. Solenoid Valve DSL C2 Lock Valve Pressure
Micro Dust and Pollen Filter Control Operation
When the micro dust and pollen filter switch is pressed, the air conditioning ECU changes to the recirculation mode and face mode. This allows the air conditioning to direct clean air, which has passed through the clean air filter, to the face areas. Thus, the air conditioning removes pollen and captures it in the clean air filter. From the micro dust and pollen filter control, the air conditioning automatically resumes normal automatic mode control after 3 minutes at normal temperatures, or...