A Determining Front Wheel Skid

Whether the vehicle is in the state of the front wheel skid or not is determined by the difference between the target yaw rate and the vehicle's actual yaw rate. When the vehicle's actual yaw rate is smaller than the yaw rate (a target yaw rate that is determined by the vehicle speed and steering angle) that should be rightfully generated when the driver operates the steering wheel, it means the vehicle is making a turn at a greater angle than the locus of travel. Thus, the skid control ECU...

AC Compressor General

A C compressor is continuously variable capacity type in which its capacity varies in accordance with the cooling load of the air conditioning. This compressor consists of the shaft, lug plate, piston, shoe, crank chamber, cylinder, and solenoid control valve. A solenoid control valve that adjusts the suction pressure so that the suction pressure can be controlled as desired is provided. The plastic DL (Damper Limiter) type A C pulley is used.

Azfe Engine Description

The 2AZ-FE engine is an in-line, 4-cylinder, 2.4-liter, 16-valve DOHC engine. This engine uses the VVT-i (Variable Valve Timing-intelligent) system, DIS (Direct Ignition System), ETCS-i (Electronic Throttle Control System-intelligent). It has been developed to realize high performance, quietness, fuel economy and clean emission. 16-valve DOHC, Chain Drive (with VVT-i) 124 kW 6000 rpm (166 HP 6000 rpm) 224 Nm 4000 rpm (165 ft-lbf 4000 rpm) Engine Service Mass*2 (Reference) kg (lb) *1 Maximum...

Brake Control System General

The '06 RAV4 brake control system (ABS with EBD, Brake Assist, TRAC, VSC, Auto LSD, Hill-start Assist Control and DAC) has the following functions The ABS helps prevent the wheels from locking when the brake is applied firmly or applied on a slippery surface. (Electronic Brake force Distribution) The EBD control utilizes the ABS, realizing the proper brake force distribution between the front and rear wheels in accordance with the driving conditions. In addition, during cornering braking, it...

Centrifugal Fluid Pressure Canceling Mechanism

There are two reasons for improving the conventional clutch mechanism To prevent the generation of pressure by the centrifugal force that applied to the fluid in piston fluid pressure chamber (hereafter referred to as chamber A) when the clutch is released, a check ball is provided to discharge the fluid. Therefore, before the clutch can be subsequently applied, it takes time for the fluid to fill the chamber A. During shifting, in addition to the original clutch pressure that is controlled by...

Charging Control General

This system lowers the generated voltage when the vehicle is idling or is being driven at a constant speed, and raises the generated voltage when the vehicle is decelerating. This reduces the load on the engine as a result of the electric generation of the generator, thus contributing to the fuel economy of the engine. During acceleration, this system regulates the generated voltage in order to place the amperage estimation value close to the target value. This control consists of the ECM,...

Clutch Pressure Optimal Control

The ECM monitors the signals from various sensors such as the input turbine speed sensor, allowing shift solenoid valves SL1, SL2, and SL3 to minutely control the clutch pressure in accordance with engine output and driving conditions. As a result, smooth shift characteristics have been realized. Signals from Various Sensors Engine Speed Engine Torque Information Signals from Various Sensors Engine Speed Engine Torque Information

Construction and Operation of Main Components

The ATF temperature sensor is installed in the lower valve body for direct detection of the fluid temperature. The ATF temperature sensor is used for correction of clutch and brake pressure to keep smooth shift quality every time. Input Turbine Speed Sensor and Counter Gear Speed Sensor The U140F and U241E automatic transaxles use an input turbine speed sensor (for the NT signal) and a counter gear speed sensor (for the NC signal). Thus, the ECM can detect the timing of the shifting of the...

DTC of Occupant Classification System

There is only a 5-digit DTC for the occupant classification system. The 5-digit DTC can be read by connecting a hand-held tester to the DLC3 terminal. For details, see the 2006 RAV4 Repair Manual (Pub. No. RM01M1U). The dual-stage SRS (Supplemental Restraint System) driver and front passenger airbags are used to help reduce the shocks to the heads and chests of the driver and front passenger in the event of frontal collision as supplements to the seat belts. The dual-stage SRS airbag system...

Electronic Control System General

The electronic control system of the U140F and U241E automatic transaxles consists of the controls listed below. Clutch Pressure Control (See page CH-20) Controls the pressure that is applied directly to Bi brake and C2 clutch by actuating the shift solenoid valves (SL1, SL2) in accordance with ECM signals. The solenoid valve SLT minutely controls the clutch pressure in accordance with the engine output and driving conditions. Actuates the solenoid valve SLT to control the line pressure in...

Engine Output Control

During a TRAC, Auto LSD or VSC operation, the skid control ECU outputs a engine output control signal to the ECM. Upon receiving this signal, the ECM affects throttle control to regulate the engine output. * The wheel cylinder that activates varies depending on the condition of the vehicle. 15. Initial Check After the ignition switch is turned ON, and the vehicle attains an approximate speed of 6 km h (4 mph) or more, the skid control ECU performs the initial check. The functions of each...

Front Wheel Skid Tendency

When the skid control ECU determines a front wheel skid tendency (see page CH-108), it controls the VSC to dampen the front wheel skid (see page CH-109). At the same time, it effects the cooperative control with the EPS to provide steering torque assists, which controls the driver's steering maneuvers to stabilize the vehicle posture. Steering torque assists are provided to inform the driver of the front wheel skid (a), and to prevent the driver's excessive turning of the steering wheel (b). In...

Function General

The sliding roof has following functions The sliding roof has following functions This function causes the sliding roof to open (or close) when the SLIDE OPEN switch (or SLIDE CLOSE switch) is pressed for a maximum of 0.3 seconds. The sliding roof stops as soon as the switch is released. This function causes the sliding roof to be fully opened (or closed) when the SLIDE OPEN switch (or SLIDE CLOSE switch) is pressed for a minimum of 0.3 seconds. This function causes the sliding roof to tilt up...

Function of Components

Connects input shaft and front planetary sun gear. Connects intermediate shaft and rear planetary sun gear. Connects U D sun gear and U D planetary carrier. Connects intermediate shaft and rear planetary carrier. Prevents rear planetary sun gear from turning either clockwise or counterclockwise. Prevents rear planetary carrier and front planetary ring gear from turning either clockwise or counterclockwise. Prevents U D planetary sun gear from turning either clockwise or counterclockwise....

Function of Main Components

Detects the twist of the torsion bar, calculates the torque that is applied to the torsion bar by changing it into an electrical signal, and outputs this signal to the EPS ECU. Generates power assist in accordance with a signal received from the EPS ECU. Outputs the rotation angle of the motor to the EPS ECU. Reduces the speed of the motor through the use of a worm gear and a wheel gear and transmits it to the column shaft. Actuates the motor mounted on the steering column to provide power...

Heater Control Panel Manual Control Type

The rotary switch type heater control panel is used. The '06 models use two cables on pulleys to operate the heater control panel and damper. Five air outlet modes are provided on the control panel on the models with air conditioning. To realize finer mode settings, a positive feel is provided between the positions of these modes, thus realizing the high comfort level. When the FOOT DEF or DEF mode is selected, the A C compressor turns ON and the air conditioning switches to the fresh mode. As...

Ignition System General

A DIS (Direct Ignition System) is used. The DIS improves the ignition timing accuracy, reduces high-voltage loss, and enhances the overall reliability of the ignition system by eliminating the distributor. The DIS is an independent ignition system which has one ignition coil (with igniter) for each cylinder. No. 1 Cylinder No. 2 Cylinder No. 3 Cylinder No. 4 Cylinder No. 5 Cylinder No. 6 Cylinder

Impact Absorbing Structure for Side Collision

Reinforcements using high strength sheet steel have been optimally located at the center pillar and the roof to help ensure the rigidity of the body. A bulkhead has been provided at the rocker to achieve a construction that effectively transmits the side impact energy to the floor cross member. Energy absorbing pads have been provided inside the door trim to help dampen the impact to the occupant during a side collision. A head impact protection structure is used. With this type of...

Intake And Exhaust System General

The linkless-type throttle body is used and it realizes excellent throttle control. The intake air chamber made of plastic is used. A stainless steel exhaust manifold is used for weight reduction. ETCS-i (Electronic Throttle Control System-intelligent) provides excellent throttle control. For details, see page EG-118. ACIS (Acoustic Control Induction System) has improved the engine performance. For details, see page EG-126. The air intake control system is used to reduce engine noise. For...

L J

Power Window Motor 1 Revolution (Normal) Power Window Motor 1 Revolution (Jammed) If the power window motor assembly and power window regulator assembly are replaced, the window position information stored in the system will be lost, and the system must be initialized. After replacing the above parts, initialize the system by performing the steps described below. 1) Turn the ignition switch ON, and fully open the driver's window. Continue to hold down the switch for at least 1 second after the...

Layout Of Main Components

Door Lock Assembly Door Lock Motor Door Lock Assembly Door Lock Motor The wireless door lock remote control system has the following functions Pressing the lock button on the transmitter locks all doors. Pressing the unlock button on the transmitter once unlocks the driver's door. If the unlock button is pushed again within 3 seconds, all doors unlock. If no door is opened for 30 seconds and the ignition key is not in the ignition key cylinder after unlocking the doors by pushing the unlock...

Line Pressure Optimal Control

Through the use of the solenoid valve SLT, the line pressure is optimally controlled in accordance with the engine torque information, as well as with the internal operating conditions of the torque converter and the transaxle. Accordingly, the line pressure can be controlled minutely in accordance with the engine output, traveling condition, and the ATF temperature, thus realizing smooth shift characteristics and optimizing the workload in the oil pump.

Partial Recirculation System

The partial recirculation system is used. This system has an air inlet control door (sub) in the cabin side of the air inlet duct. Thus, it is able to cycle a small volume of recirculated air even in the FRESH mode, thus enhancing heating and air conditioning performance. When the blower switch is ON, the suction force of the blower fan opens this air inlet control door (sub).

Servomotor Only for Models with Automatic Air Conditioning

In contrast to the previous type that detects the position by way of a potentiometer voltage, the pulse pattern type servomotor detects the relative position by way of the 2-bit ON OFF signals. The forward and reverse revolutions of this motor are detected by way of two phases, A and B, which output four types of patterns. The air conditioning ECU counts the number of pulse patterns in order to determine the stopped position.

Starting System General

A compact and lightweight PS (Planetary reduction-Segment conductor motor) type starter is used. Because the PS type starter contains an armature that uses square-shaped conductors, and its surface functions as a commutator, it has resulted in both improving its output torque and reducing its overall length. In place of the field coil used in the conventional type starter, the PS type starter uses two types of permanent magnets main magnets and interpolar magnets. The main magnets and...

Subcool Cycle

In the sub-cool cycle, after the refrigerant passes through the condensing portion of the condenser, both the liquid refrigerant and the gaseous refrigerant that could not be liquefied are cooled again in the super-cooling portion. Thus, the refrigerant is sent to the evaporator in an almost completely liquefied state.

System Diagram

TOYOTA genuine Super Long Life Coolant (SLLC) or similar high quality ethylene glycol based non-silicate, non-amine, non-nitrite and non-borate coolant with long-life hybrid organic acid technology (coolant with long-life hybrid organic acid technology is a combination of low phosphates and organic acids.) Do not use plain water alone. 8.9 Liters (9.4 US qts, 7.8 Imp. qts) 9.2 Liters (9.7 US qts, 8.1 Imp. qts) SLLC is pre-mixed (the U.S.A. models 50 coolant and 50 deionized water, the Canada....

Torque Converter

These torque converters have optimally designed fluid passages and impeller configuration, resulting in substantially enhanced torque ratio and transmission efficiency to ensure good starting, acceleration and fuel economy. Furthermore, a hydraulically operated lock-up mechanism which cuts power transmission losses due to slippage at medium and high speeds is used.

Uphill Downhill Judgment

The actual acceleration calculated from the speed sensor signal is compared with the reference acceleration (based on level road travel) stored in the ECM to determine uphill or downhill travel. Actual Acceleration < Reference Acceleration Actual Acceleration > Reference Acceleration

When the Intake Air Control Valve Open

Under any condition except when the engine is running at middle speed under high load, the ECM controls the actuator to open the intake air control valve. When the intake air control valve is open, the effective length of the intake manifold is shortened and the peak intake efficiency is shifted to the low-to-high engine speed range, thus providing greater output at low-to-high engine speeds.

F Repeat in Leak Pressure Measurement

1) While the ECM operates the vacuum pump, the purge VSV and vent valve turn off and a repeat 0.02 in. leak pressure measurement is performed. 2) The ECM compares the measured pressure with the pressure during EVAP leak check. 3) If the pressure during the EVAP leak check is below the measured value, the ECM determines that there is no leakage. 4) If the pressure during the EVAP leak check is above the measured value, the ECM determines that there is a small leakage and stores DTC P0456 in its...

Precautions on Tire Pressure Warning System

If the tire pressure warning light illuminates, reduce the vehicle speed as soon as possible. Avoid making sudden steering or braking maneuvers because low-pressure tires could negatively affect handling and braking performance. Make sure to use only the supplied valve caps (made of aluminum) on the pressure warning valve and transmitter. If a metal cap (made of brass) is used, the cap could become seized. Do not use a flat tire sealant as it could cause the tire pressure warning valve and...

Front Seat

6-way manual seat is provided for the driver seat, and 4-way manual seat is provided for the front passenger seat as standard equipment on the Standard and Sport grades. 8-way power seat is provided for the driver seat as standard equipment on the Limited grade. On both the driver and front passenger seats, seat back pockets are provided as standard equipment on the Standard grade, and net type seat back pockets are provided as standard equipment on the Limited and Sport grades. 240 mm (9.4...

Seat Belt General

The following types of seat belts are provided. Electrical Sensing Type Pretensioner & Force Limiter Rear No.1 Seat (Include center seat) * Only for Models with Rear No. 2 Seat *2 Emergency Locking Retractor *3 Automatic Locking Retractor The seat belt for the center seat of the rear No. 1 seat and its storage box have been provided on the ceiling to ensure the ease of use of the rear seats.

Toyota Rav4 Electromagnetic Coupling

Toyota Electromagnetic Coupling

The electric control coupling consists of a control clutch, main clutch, front housing, shaft, armature, cam, piston, and electromagnetic solenoid with a compact construction. The outer sides of the main clutch and control clutch are coupled to the front housing. The inner side of the main clutch is coupled to the shaft, and the inner side of the control clutch is coupled to the cam. The control clutch uses a multiple metal plate type clutch, and the main clutch uses a multiple wet plate type...

Ue And Uf Automatic Transaxles Description

For the 2GR-FE engine models, U151E (for 2WD model) and U151F (for 4WD model) automatic transaxle are used. These automatic transaxles are compact, lightweight and high-capacity 5-speed Super ECT (Electronically Controlled Transaxle). A low-viscosity type transmission fluid (Toyota Genuine ATF WS) is used for all the automatic transaxles. For details on ATF WS, see page CH-5. U151E Automatic Transaxle U151F Automatic Transaxle U151E Automatic Transaxle U151F Automatic Transaxle Fluid Capacity...

Structure of Tire Pressure Warning Valve and Transmitter

Toyota Tire Pressure Warning Valves

The tire pressure warning valve and transmitter is integrated in the air valve of a disc wheel. This transmitter operates with a lithium battery, which lasts approx. 10 years. If the battery voltage drops, the tire pressure warning antenna and receiver stores the DTC (Diagnostic Trouble Code) in its memory. If the voltage drops even further and the transmitter stops working, it stores the DTC in memory and illuminates the tire pressure warning light to alert the driver. Transmitters with five...

Engine Control System General

The engine control system of the 2GR-FE engine has the following features. (Sequential Multiport Fuel Injection) See page EG-117 An L-type SFI system detects the intake air mass with a hot-wire type air flow meter. Ignition timing is determined by the ECM based on signals from various sensors. The ECM corrects ignition timing in response to engine knocking. This system selects the optimal ignition timing in accordance with the signals received from the sensors and sends the (IGT) ignition...

Brake Assist Operation

In the event of emergency braking, the skid control ECU detects the driver's intention based on the speed of the pressure increase in the master cylinder determined by the master cylinder pressure sensor signal. If the skid control ECU judges the need for additional brake assist, pressure is generated by the pump in the brake actuator and directed to the wheel cylinder to apply a greater fluid pressure than the master cylinder. Also in the following cases, the skid control ECU provides brake...

SFI Sequential Multiport Fuel Injection System

An L-type SFI system directly detects the intake air mass with a hot wire type mass air flow meter. An independent injection system (in which fuel is injected once into each cylinder for each two revolution of the crankshaft) is used. There are two (synchronous and non-synchronous) injections a) The synchronous injection in which corrections based on the signals from the sensors are added to the basic injection time so that injection occurs always at the same position. b) The non-synchronous...

Cooling System

The cooling system uses a pressurized forced-circulation system with pressurized reservoir tank. A thermostat with a bypass valve is located on the water inlet housing to maintain suitable temperature distribution in the cooling system. An aluminum radiator core is used for weight reduction. The flow of the engine coolant makes a U-turn in the cylinder block to ensure a smooth flow of the engine coolant. In addition, a bypass passage is enclosed in the cylinder head and the cylinder block....

Rear Wheel Skid Restraining Control Making a Right Turn

In the rear wheel skid restraining control, the brake of the front wheel of the outer circle of the turn is 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 on the next page shows the hydraulic circuit in the pressure increase mode, as it controls the rear wheel skid condition while the vehicle makes a right turn. In...

Air Conditioning Control Air Conditioning ECU

The air conditioning ECU has following controls. The air conditioning ECU has following controls. This control is capable of effecting complex control by artificially simulating the information processing method of the nervous system of living organisms in order to establish a complex input output relationship that is similar to a human brain. In compliance with the temperature setting at the temperature control switch, the neural network control calculates the outlet temperature based on the...

With Hillstart Assist Control

Increases the backward speed of the vehicle Increases the backward speed of the vehicle Provided that all the conditions listed below have been met, and the driver depresses the brake pedal further while the vehicle is stopped, the system starts the Hill-start Assist Control. Shift lever is in the position other than P. The accelerator pedal is not depressed.

Hillstart Assist Control Operation

The skid control ECU determines the starting of the Hill-start Assist Control operation in accordance with information provided by various sensors, switches, and the ECM. At this time, the skid control ECU controls the fluid pressure that is generated by the pump and applies it by way of the solenoid valves to the brake wheel cylinder of each wheel in the following 2 modes pressure reduction and pressure holding modes. The skid control ECU computes that the vehicle is in a state in which the...

Micro Dust and Pollen Filter Control

The micro dust and pollen filter control quickly removes pollen from the front seat occupant area with the pressing of the micro dust and pollen filter control switch on the heater control panel, without requiring any complex air conditioning operation. When the user pushes the micro dust and pollen filter control switch, the air conditioning operates in the recirculation mode. The clean air that has passed through the clean air filter blows out from the face outlet to the occupant area. The...

Pretensioner and Force Limiter

In accordance with the ignition signal from the airbag sensor assembly, the seat belt pretensioner activates simultaneously with the deployment of SRS airbag for the driver and front passenger. In the beginning of the collision if the tension of the seat belt applied to the occupant reaches a predetermined level, the force limiter activates to control the force. Even if the front passenger airbag is not deployed in accordance with the front passenger occupant classification system, the...

Neural Network Control

In the previous automatic air conditioning system, the ECU determined the required outlet air temperature and blower air volume in accordance with the calculation formula that has been obtained based on information received from the sensors. However, because the sensors of a person are rather complex, a given temperature is sensed differently, depending on the environment in which the person is situated. For example, a given amount of solar radiation can feel comfortably warm in a cold...

Sensor Output Waveforms

The MRE type VVT sensor consists of an MRE, a magnet and a sensor. The direction of the magnetic field changes due to the different shapes (protruded and non-protruded portions) of the timing rotor, which passes by the sensor. As a result, the resistance of the MRE changes, and the output voltage to the ECM changes to Hi or Lo. The ECM detects the camshaft position based on this output voltage. The differences between the MRE type VVT sensor and the pick-up coil type VVT sensor used on the...

Service Tip

The electric control coupling cannot be disassembled. For replacement, replace the electric control coupling assembly. For details, refer to the 2006 RAV4 Repair Manual (Pub. No. RM01M1U). The drive force is transmitted from the propeller shaft to the front housing. When the electromagnetic solenoid is not operating, the drive force of the front housing is not transmitted to the shaft because the control clutch is not engaged. Accordingly, the drive force of the propeller shaft is not...

Rav4 Auto Braking Feature

15 inch 275 x 25 mm (10.82 x 0.87 in.)*1 16 inch 296 x 28 mm (l1.84 x 1.10 in.)*2 15 inch 281 x 12 mm (11.24 x 0.48 in.) ABS (Anti-lock Brake System) with EBD (Electronic Brake force Distribution) & Brake Assist & TRAC (Traction Control) & Hill-start Assist Control*3 & DAC (Downhill Assist Control)*3 & VSC (Vehicle Stability Control)*4 * 2AZ-FE Engine Models with Rear No. 1 Seat Only *2 2GR-FE Engine Models and Models with Rear No. 2 Seat *3 Standard Equipment on 2GR-FE Engine...

Oil Pump

A compact cycloid rotor type oil pump directly driven by the crankshaft is used. This oil pump has used an internal relief method which circulates relief oil to the suction passage in the oil pump. This aims to minimize oil level change in the oil pan, reduce friction, and reduce air mixing rate in the oil.

Luggage Space

Front and rear deck boards covered with water-repellent skin have been provided on the models without the rear No. 2 seat. The front deck board is a removable type, and a storage space is provided below it. The rear deck board is a type that folds in two, for ease of operation and the in-and-out access of cargo under the floor.

Light Auto Turnoff System

The light auto turn-off system is standard equipment on all models. When the headlights and taillights are illuminated through the operation of the light control switch, if the ignition switch is turned OFF and all the doors are closed, this system continues to illuminate the headlights and taillights for approximately 30 seconds, and then turns OFF the headlights. However, with all the doors locked, when the lock button on the wireless remote control is pushed, the headlights and taillights...

DAC Function Outline of DAC

When the vehicle is descending a steep hill and engine brake alone cannot provide a sufficient deceleration force while the transaxle is in the L or R range, the DAC effects 4-wheel brake control to maintain a constant, low vehicle speed. Thus, the vehicle is able to descend in a stable manner without causing the wheels to become locked. When the vehicle descends a steep hill without the DAC, the driver must pay close attention to the brake and accelerator pedals operation. However, with the...

Enhanced VSC System

Sistem Vsc Rav4

In the past, the brake control system (ABS, TRAC, VSC) and the EPS were controlled individually. In contrast, the '06 RAV4 uses a new Enhanced VSC system. This system uses a cooperative control function that effects integrated control of the brake control system and the EPS in accordance with driving conditions. Thus, it improves the dynamic performance of the vehicle to run, turn, and stop and ensures excellent driving stability and drivability. On the 4WD models, this system effects...

Failsafe

This function minimizes the loss of drivability when any abnormality occurs in each sensor or solenoid. During a speed sensor malfunction, the vehicle speed is detected through the signals from the counter gear speed sensor to effect normal control. During an ATF temperature sensor malfunction, 5th gear upshift is prohibited. During a counter gear speed sensor malfunction, 5th gear upshift is prohibited. Solenoid Valves SL1, SL2, SL3, and S4 The current to the failed solenoid valve is cut off...

Flex Lockup Clutch Control

Wire Lock Torque Converter 2224r

The flex lock-up clutch control is used. This flex lock-up clutch control regulates the solenoid valve SL2 as an intermediate mode between the ON OFF operation of the lock-up clutch. The flex lock-up clutch control operates in the 4th and 5th gears in the D range during acceleration, and in the 4th and 5th gears in the D range, and in the 4th gear in the 4 range during deceleration. During the acceleration, the partition control of the power transmission between the lock-up clutch and torque...

Eps Ecu General

The EPS ECU receives signals from various sensors, judges the current vehicle condition, and determines the assist current to be applied to the motor accordingly. In case a malfunction occurs in the system, the fail-safe function stops the output current and reverts the control to manual steering. At this time, a P S warning light illuminates to alert the driver of the malfunction. The EPS ECU of new model has following functions The EPS ECU of new model has following functions Calculates the...

View from Front Side Hydraulic Lash Adjuster

Lash Adjuster Toyota

The hydraulic lash adjuster, which is located at the fulcrum of the roller rocker arm, consists primarily of a plunger, plunger spring, check ball, and check ball spring. The engine oil that is supplied by the cylinder head and the built-in spring actuates the hydraulic lash adjuster. The oil pressure and the spring force that act on the plunger push the roller rocker arm against the cam, in order to adjust the valve clearance that is created during the opening and closing of the valve. As a...

Main Components of Engine Control System General

The main components of the 2GR-FE engine control system are as follows The main components of the 2GR-FE engine control system are as follows Crankshaft Position Sensor Rotor Teeth MRE Magnetic Resistance Element Type 3 MRE Magnetic Resistance Element Type 3 Built-in Piezoelectric Type Non-resonant Type Flat Type

Rear Suspension General

A double-wishbone type suspension is used to realize excellent driving stability and ride comfort. The shock absorbers have been placed under the floor and the coil springs have been placed low to realize a more spacious cargo area and a lower floor. The parts have been made compact and lightweight to reduce unsprung weight and improve road holding. The suspension geometry has been optimized to realize excellent driving stability and ride comfort. The rolling rigidity has been optimized to...

Jam Protection Function

The Hall IC converts the changes in the magnetic flux that occur through the rotation of the worm gear into pulse signals and outputs them to the ECU. To control the jam protection function, the ECU determines the amount of movement and the jamming of the sliding roof from the pulse signals from the Hall IC1, and the moving direction of the sliding roof from the phase difference between the pulses from the Hall IC1 and Hall IC2.

System Control General

The cruise control system has the following functions The ECM compares the actual vehicle speed and the set speed. If the vehicle speed is higher than the set speed, the ECM activates the throttle control motor in the throttle closing direction. If the vehicle speed is lower than the set speed, the ECM activates the throttle motor in the throttle opening direction. When the MAIN switch is turned on and the cruise control switch is pressed to the SET side and released, the engine ECU stores the...

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. Front Passenger Occupant Classification Sensors Front Passenger Occupant Classification Sensors

Failsafe Chart

ECM turns off air-fuel ratio sensor heater. ECM turns off heated oxygen sensor heater. Ignition timing is calculated from engine speed and throttle angle. Pass condition detected. Intake air temperature is fixed at 20 C 68 F . Pass condition detected. Engine coolant temperature is fixed at 80 C 176 F . Pass condition detected. P0120, P0121, P0122, P0123, P0220, P0222, P0223, P0604, P0606, P0607, P0657, P2102, P2103, P2111, P2112, P2118, P2119, P2135 If ETCS-i Electronic Throttle Control...

Clutch Pressure Control

A clutch to clutch pressure control is used for shifting from the 1st to 2nd gear, and from the 2nd to 3rd gear. Solenoid valves SL1 and SL2 are actuated in accordance with the signals from the ECM, and this output pressure is guided directly to the control valves B1 and C2 in order to regulate the line pressure that acts on the B1 brake and C2 clutch. As a result, high response and excellent shift characteristics have been achieved. The solenoid valve SLT is used for optimal control of clutch...

Transmitter Recognition Code Registration Function

The table below shows the 4 special coded ID registration function modes through which up to 4 different codes can be registered. The codes are electronically registered written and stored in the EEPROM. For details of the recognition code registration procedure, refer to the 2006 RAV4 Repair Manual Pub. No. RM01M1U . Erases all previously registered codes and registers only the newly received codes. Adds a newly received code while preserving any previously registered codes. This mode is used...

Front Passenger Occupant Classification System General

The front passenger occupant classification system judges whether the front passenger seat is occupied by an adult or child with child seat or is unoccupied, in accordance with the load that is applied to the front passenger seat and whether the seat belt is buckled. Thus, it restricts the deployment of the front passenger airbag, front passenger side airbag, and the front passenger seat belt pretensioner. In addition, the system informs the driver of the result of the judgment through the use...

DAC Operation

Cylinder Numbers 2002 Rav

Based on the information provided by various sensors, switches, and ECM, the skid control ECU determines the conditions that enable the DAC operation. Then, the skid control ECU controls the fluid pressure that is generated by the pump and applies it by way of the solenoid valve to the brake wheel cylinder of each wheel in the following 3 modes pressure reduction, pressure holding and pressure increase modes. The skid control ECU computes the vehicle speed, travel direction, and the gradient of...

Timing Chain and Chain Tensioner

Toyota Sienna 2007 Timing Chain

Both the primary and secondary timing chains use roller chains with a pitch of 9.525 mm 0.375 in. . The timing chain is lubricated by an oil jet. The primary timing chain uses one chain tensioner, and each of the secondary timing chains for the right and left banks uses one chain tensioner. Both the primary and secondary chain tensioners use a spring and oil pressure to maintain proper chain tension at all times. They suppress noise generated by the timing chains. The primary chain tensioner...

Combination Meter General

The combination meter in the '06 models has the following features The Optitron display type combination meter is used. The Optitron display type combination meter realizes excellent visibility through the use of smoke acrylic in the protective panel, and LEDs Light Emitting Diodes that are very bright and have high contrast for illuminating the indicator and dial. The step-motor is used to actuate the indicator of the speedometer, the tachometer, the fuel gauge and the water temperature gauge....

Oil Filter

An oil filter with a replaceable element is used. The element uses a high-performance filter paper to improve filtration performance. It is also combustible for environmental protection. An aluminum alloy filter cap is used to extend its life. This oil filter has a structure which can drain the engine oil remaining in the oil filter. This prevents engine oil from spattering when replacing the element and allows the technician to work without touching hot engine oil. Inside Diameter 15 mm 0.59...

Dimensions

Car Door System Dimensions

Rear 1560 mm 61.4 in. 1815 mm 71.5 in. 1855 mm 73.0 in. 3 1685 mm 66.3 in. 1745 mm 68.7 in. 1 1690 mm 66.5 in. 2 1755 mm 69.1 in. 1- 2 1 Without Roof Rail 2 With Rear No. 2 Seat 3 With Over-fender DOOR LOCK CONTROL SYSTEM DESCRIPTION The door lock control system is provided as standard equipment on all models. This system is controlled by the main body ECU. The main body ECU outputs signals to the respective door lock motors. The door lock system in the '06 model has the...

Impact Absorbing Structure for Front Collision

Structure The Car Rav4

To help minimize the deformation of the cabin in case of a collision, the following reinforcements effectively dissipate the energy of the impact applied to the front of the vehicle the front bumper reinforcements, under-floor reinforcements, dash panel reinforcements, floor tunnel reinforcements, rockers, front pillars, and door inner reinforcements. A member has been provided at the side of the under member and the floor tunnel, in order to achieve a construction that effectively dissipates...

Outline of Hillstart Assist Control

Hill Assist Control

When the vehicle starts off a steep or slippery hill, the vehicle could descend backward while the driver switches from the brake pedal to the accelerator pedal, thus making it difficult for the vehicle to start off. To prevent this from occurring, the Hill-start Assist Control temporarily approximately 2 seconds at the maximum applies the brakes to the 4 wheels in order to prevent the vehicle from descending backward. Without the Hill-start Assist Control, the driver must quickly and...

Features Of Grfe Engine

The 2GR-FE engine has achieved the following performance through the use of the items listed below. 1 High performance and reliability 3 Lightweight and compact design 5 Clean emission and fuel economy A steel laminate type cylinder head gasket is used. A taper squish shape is used for combustion chamber. A cylinder block made of aluminum alloy is used. The skirt portion of the piston is applied with resin to reduce friction. An oil pan No. 1 made of aluminum alloy is used. The Dual VVT-i...

Cylinder Head

Cylinder Head For Toyota Rav4

The cylinder head structure has been simplified by separating the cam journal portion camshaft housing from the cylinder head. The cylinder head, which is made of aluminum, contains a pentroof-type combustion chamber. The spark plug is located in the center of the combustion chamber in order to improve the engine's anti-knocking performance. The intake ports are on the inside and the exhaust ports are on the outside of the left and right banks respectively. Upright intake ports are used to...

Spark Plug

Toyota Rav4 Water Jacket

Long-reach type spark plugs are used. This type of spark plugs allow the area of the cylinder head to receive the spark plugs to be made thick. Thus, the water jacket can be extended near the combustion chamber, which contributes to cooling performance. Iridium-tipped spark plugs are used to achieve a 120,000 miles 193,000 km maintenance interval. By making the center electrode of iridium, the superior ignition performance as platinum-tipped spark plugs is achieved and durability has been...

Front Suspension General

Adjust Caster Yaris

The highly rigid and compact MacPherson strut with L-shaped lower arms is used. Excellent driving stability and ride comfort have been realized by enlarging the wheelbase and tread and optimizing the suspension geometry. Excellent vehicle stability has been ensured by optimizing the rolling rigidity. Optimum caster angle and trail value are featured to provide straight-line stability during low-speed to high-speed ranges and assist steering response during high speed. The front suspension...

Airbag For Siderear Side Collision General

The airbag for side collisions contains two airbags side and curtain shield airbags. These airbags deploy simultaneously. The airbag for rear side collisions contains only the curtain shield airbag. With the airbag for side collisions, if the side airbag sensor detects an impact, it informs the airbag sensor assembly, and the airbag sensor assembly causes the side and curtain shield airbags to be deployed simultaneously. With the airbag for rear side collisions, if the curtain shield airbag...

Grfe Engine Description

Dual Vvt Cut Engine

The 2GR-FE engine on the '06 RAV4 is a newly developed, V6 3.5-liter, 24-valve DOHC engine. This engine uses the Dual VVT-i Variable Valve Timing-intelligent system, DIS Direct Ignition System , ACIS Acoustic Control Induction System , and ETCS-i Electronic Throttle Control System-intelligent . These control functions achieve improved engine performance, fuel economy, and reduced exhaust emissions. 24-valve DOHC, Chain Drive with Dual VVT-i 201 kW 6200 rpm 269 HP 6200 rpm 333 Nm 4700 rpm 247...

Counter Gear Ratio Included Active Torque Control WD System

Counter Gear

A new active torque control 4WD system with an electric control coupling is used. The active torque control 4WD system, which has an electric control coupling in the front part of the rear differential, transmits torque to the rear wheels when needed, and only in the amount needed, based on information provided by various sensors. By operating the four-wheel drive lock switch provided on the instrument panel, the driver can select the following modes the AUTO mode to optimally control the...

Throttle Position Sensor

The non-contact type throttle position sensor uses a Hall IC, which is mounted on the throttle body. The Hall IC is surrounded by a magnetic yoke. The Hall IC converts the changes that occur in the magnetic flux at that time into electrical signals and outputs them in the form of a throttle valve effort to the ECM. The Hall IC contains circuits for the main and sub signals. It converts the throttle valve opening angles into electric signals with two differing characteristics and outputs them to...

Description

Acceleration Sensor For 4wd

The 4WD system of the '06 RAV4 uses an active torque control 4WD system. It is a compact, lightweight, and high performance 4WD system that optimally controls the torque distribution to the front and rear wheels through the electric control coupling in the rear differential. ACTIVE TORQUE CONTROL 4WD SYSTEM 1. General Based on information provided by various sensors, the 4WD ECU controls the amperage that is applied to the electric control coupling, in order to transmit drive torque to the...

Valve Mechanism General

The VVT-i system is used to improve fuel economy, engine performance and reduce exhaust emissions. For details of VVT-i system, see page EG-48. The intake and exhaust camshafts are driven by a timing chain. Along with the increase in the amount of valve lift, the shim-less type valve lifter is used. This valve lifter increases the cam contact surface. The adjustment of the valve clearance is accomplished by selecting and replacing the appropriate valve lifters. A total of 35 valve lifters are...

E Purge VSV Monitor

Purge Vsv Valve

1 After completing an EVAP leak check, the ECM turns ON open the purge VSV with the leak detection pump actuated, and introduces the atmospheric pressure from the intake manifold to the canister. 2 If the pressure change at this time is within the normal range, the ECM determines the condition to be normal. 3 If the pressure is out of the normal range, the ECM will stop the purge VSV monitor and store DTC P0441 in its memory.

Illuminated Entry System

This system is controlled by the main body ECU. When any one of the following conditions is satisfied, the illuminated entry system turns on the key illumination, room light, front personal light and foot light . 2 A door is unlocked through a driver door key transmitter operation. 3 All doors are closed and the ignition switch is turned from ON to OFF. When any one of the following conditions is satisfied, these lights will fade out in approx. 1 sec. . 1 After continuing to be on for approx....

Instrument Panel

Car Center Console

The instrument panel blends an arrangement that emphasizes a horizontal spaciousness with a vertical flow along its center area, in order to portray a sporty image. Metallic paint and hairline grain have been applied to the escutcheon, console garnish, and heater control panel in order to express a premium image. Shut-fin type side registers are used. Their surface becomes flush when they are closed, thus achieving a simple and streamlined design. An illumination is provided for the cup holder...

Construction

The counter drive and driven gears are placed in front of the front planetary gear and the under drive U D planetary gear unit is placed above the counter shaft. Furthermore, the number of the brake and one-way clutch is minimized to realize the compact and high-capacity structure. The centrifugal fluid pressure canceling mechanism is used in the C0, C2, C3, and C1 clutches that are applied when shifting from 2nd to 3rd, from 3rd to 4th and from 4th to 5th. For details on the centrifugal fluid...

Features Of Azfe Engine

Car Water Jacket

The 2AZ-FE engine has achieved the following performance through the use of the items listed below. 1 High performance and reliability 3 Lightweight and compact design 5 Clean emission and fuel economy A cylinder block made of aluminum alloy along with a magnesium alloy die-cast cylinder head cover is used. A taper squish shape is used for the combustion chamber. A timing chain and chain tensioner are used. The shim-less type valve lifters are used. A chacoal filter is used in the air cleaner...

Lower

Lower Arm Bush 2002 Toyota Sienna Size

Closed cross section type lower arms that are lightweight and highly rigid are used. Along with the use of wider treads, the length of the lower arms has been extended. The installation point of the lower arm bushing and the bushing characteristics have been optimized to realize excellent ride comfort and steering characteristics. Except for the Sport grade, an integrated input construction type suspension upper support is used, in which the pitch of the mounting bolts has been increased and...

Cooling Fan Control System General

Wiring Diagram Cooling Fan Toyota

A cooling fan control system is used. To achieve an optimal fan speed in accordance with the engine coolant temperature, vehicle speed, engine speed, and air conditioning operating conditions, the ECM calculates the proper fan speed and sends the signals to the front controller. By receiving the signals from the ECM, the front controller sends proper fan speed control signals to the cooling fan ECU. Upon receiving the signals from the front controller, the cooling fan ECU actuates the fan...

Fuel Returnless System

This type of fuel system is used to reduce the evaporative emission. As shown below, by integrating the fuel filter and pressure regulator with fuel pump assembly, the fuel return system in which the fuel returns from the engine area is discontinued and temperature rise inside the fuel tank is prevented.

Antichipping Application

To protect the paint from chipping while the vehicle is being driven, anti-chipping paint is applied to the rockers and the lower part of the doors, and soft-chipping primer is applied to the front end of the hood panel. Anti-chipping tape has been provided to the lower part of the rear doors of the models for the cold areas to protect the paint and ensure anti-corrosion performance.

Sound Absorbing and Vibration Damping Materials

Dash Panel

Foamed sound insulation materials have been optimally located in the cross sections of the body frame parts. The dash panel inner silencer has been changed from the silencing type to the sound absorption type to ensure quietness. At the same time, a dash panel outer silencer has been provided to reduce the entry of the engine noise into the cabin. Reinforcements have been effectively located inside the dash panel to reduce panel vibration and the entry of road noise. Curved areas have been...

Valve Body Unit General

Shift Solenoid Valve Slt Toyota

The valve body consists of the upper and lower valve bodies and 7 solenoid valves. Apply orifice control, which controls the flow volume to the B3 brake, is used in this unit. Lock-up clutch pressure control Controls the B2 control valve and the Lock-up relay valve Lock-up Control Valve Secondary Regulator Valve Bi Control Valve Co Control Valve B2 Control Valve Accumulator Control Valve B2 Apply Control Valve Bi Apply Control Valve B2 Apply Control Valve Bi Apply Control Valve

Battery Current Sensor

Rav4 Battery Current Sensor

Installed on the negative terminal of the battery, this sensor detects the amount of charging and discharging amperage of the battery and sends signal to the ECM. Based on this signal, the ECM calculates the battery capacity. A Hall IC is used for detecting the amount of charging and discharging amperage. The changes that occur in the magnetic flux density in the core as a result of the charging and amperage of the battery are converted and output as voltage.

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

Crankshaft Toyota Rav4

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...