Understand Your Toyota Better

Want to keep your Toyota running smoothly for years to come? One of the most important things you can do is keep up with your manufacturer's recommended maintenance services..

There is no better place to take your Toyota for service than your Toyota Dealer. When you visit your Toyota Dealership for Service, you can count on us to take good care of you and your vehicle. Our team of dedicated Service Advisors and factory-trained Technicians is committed to delivering quality service using only Toyota Genuine Parts.

To learn more about Toyota service components and complex technologies please select the service listed above.

1. Intake Camshaft
2. Camshaft Timing Pulley
3. Timing Cover
4. Idler Pulley

Exhaust Valves:

Open to discharge combustion gases from the cylinders.

Intake Valves:

Open to draw the air-fuel mixture into the cylinders.

5. Timing Belt

Synchronizes the rotation of the camshaft, which opens and closes the intake/exhaust valves, with the movement of
the crankshaft

Oil Pan:

Receptacle for engine oil.

6. Crankshaft Pulley

7. Exhaust Camshaft
8. Valves

Cylinder Head:

The indented lower surface forms the combustion chamber.

Camshaft:

Driven by timing belt. It opens and closes the intake and exhaust valves.

9. Pistons

Move up and down in the cylinder as a result of receiving the pressure created by the explosion of the air-fuel mixture.

10. Crankshaft:

Converts the up-and-down motion of the piston into rotational motion via the connecting rods. This motion is transferred to the transmission which makes the vehicle move.

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1. Air Filter

Removes harmful particles from the ambient air by passing it through the air
filter before entering the engine.

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1. Spark Plugs:

Ignite the air/fuel mixture inside the cylinder using the high voltage provided by the coil.

2. Electronic Igniter:

Provide the high current required to ignite the spark plug.

3. Alternator:

Charges the battery and provides electrical power while the engine is operating.

4. Starter:

Engages the flywheel to start the engine.

5. Battery:

A rechargeable source of electrical power when the engine is stopped.

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Differential:

Performs Three Functions:
• Change the direction of the driving power.
• Final gear reduction.
• Allows drive wheels to rotate at different speeds when cornering.

Driveshaft:

Transmits power from the differential to the wheel.

Transaxle:

A transaxle is a transmission and differential combined into one unit, used in front-wheel drive and some all
wheel drive vehicles.

Transmission:

Uses gears to transmit power from the engine to the drive wheels. Selecting different gears changes the amount of
power and torque transmitted.

Clutch (manual transmission only):

The clutch either transmits or isolates the power from the engine to the drive wheels.

Propeller Shaft:

On front engine rear-wheeled drive vehicles, the propeller shaft transmits power from the transmission to the
differential.

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Planetary Gears:

Gear shifting is performed by combinations of the input gear, output gear and the locking gear.

1. Torque Converter:

Transmits and multiplies torque from the engine using transmission fluid as the medium.

2. Differential:

Performs Three Functions:
• Changes the direction of the driving power.
• Final gear reduction.
• Allows drive wheels to rotate at different speeds when cornering.

Transmission Fluid:

Transmission fluid is an integral part of your automatic transaxle function. Check with your Service Advisor for
recommended service intervals for your Toyota vehicle.

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1. 3rd & 4th Gears:

Used for cruising below highway speeds

2. 5th Gear (Overdrive):

Used when driving at highway speeds to maximize fuel economy.

Synchromesh Mechanism:

Synchronizes the rotational speed of the gears when they are being changed for smooth, easy shifts.

3. Input Shaft:

Transmits the power from the engine to the trasmission via the clutch.

4. 1st & 2nd Gears:

High torque gears, used for starting off and accelerating.

Clutch Disc:

Transmits power from the engine to the transmission.

Flywheel:

The inertia provided by the flywheel's weight makes the crankshaft rotate more evenly and the engine run more
smoothly.

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This hydraulic fluid distributes pressure via the master cylinder to the wheels. Contact your Service Advisor for appropriate brake fluid service intervals for your Toyota vehicle.

1. Master Cylinder:

Changes the force applied to the brake pedal into hydraulic force.

2. Brake Booster:

Increases the force applied to the brake master cylinder in response to the driver's pressure on the brake pedal.

3. Drum Brake:

When the brakes are applied, the brake shoes press against the drums and slow the rotation of the rear wheels.

4. Disc Brake:

When the brakes are applied, the caliper clamps the brake pads against both sides of the rotor, which slows the rotation of the front wheels.

Suspension/Shock Absorbers

Function of the Suspension:

Improves riding comfort and provides handling stability.

Function of Shock Absorber:

Suppresses the bouncing motion of the springs.

1. Piston Rod:

Strong enough to support the vehicle's weight as well as the various types of shocks encountered while driving.

2. Oil:

Increases the force applied to the brake master cylinder in response to the driver's pressure on the brake pedal.

Tie Rod:

The tie rod transmits the steering force from the steering rack to the wheel.

Constant Velocity (CV) Boot:

Protects the constant velocity joint from exposure to the elements and maintains its lubrication.

Toyota Axle Boot Kit

Remanufactured Axle Shaft

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Steering System

1. Steering Column:

Transmits driver input from the steering wheel to the steering rack.

2. Tie-rod Ends:

• The link between the steering rack and the suspension/wheels.
• Ball/socket fittings provides flexibility with suspension movement.

3. Steering Rack:

• Transmits steering force from the column to the wheels.
• May be either hydraulic or electric, depending on your vehicle.
• Hydraulic systems use a pump run by the engine to reduce required steering effort.
• Electric systems use electrical power and a computer to control the power assist.

4. Power Steering Pump and Lines:

• Provides power assist to reduce required steering effort.
• Power steering lines carry hydraulic fluid under high pressure.

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Condenser:

The high-temperature, high-pressure refrigerant from the compressor passes through the condenser, where it is
cooled and changes from a gas to a liquid..

Compressor:

It compresses the refrigerant, and sends it to the condenser under high pressure.

Cooling Unit:

Includes evaporator, expansion valve and thermistor.

Expansion Valve:

Atomizes liquefied refrigerant and injects it into the evaporator.

Receiver:

The refrigerant liquefies in the condenser and is stored in this tank for supply to the evaporator. On newer
Toyota models the receiver is integrated into the condenser.

1. Cabin Air Filter:

Captures unwanted particles such as pollen, dust and other pollutants before they enter your vehicle's passenger
compartment.

2. Blower Unit:

Blows air into the passenger compartment.

3. Evaporator:

Vaporizes the refrigerant which cools the evaporator. Air passing through the evaporator is cooled before entering
the passenger compartment.

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1. Gasoline Engine:

• Provides power to the wheels under heavy loads, above certain speeds and to charge the HV Battery.
• Turns on and off under certain conditions like stop-and-go traffic, to improve fuel economy and reduce
  emissions.

2. Electric Motor

• Provides power to the wheels under heavy loads, above certain speeds and to charge the HV Battery.
• Turns on and off under certain conditions like stop-and-go traffic, to improve fuel economy and reduce
  emissions.

2. Tie-rod Ends:

• Charges the high voltage battery.

3. High Voltage Battery:

• One of two power sources to drive the vehicle, the other being the engine.
• Can power the vehicle on its own, or work in conjunction with the gasoline engine when loads require.
• When powering the vehicle on its own, tailpipe emissions are reduced to zero.

4. Regenerative Braking System:

• Motor is used as a generator to convert braking energy into electricity.
• Effective in stop-and-go city traffic.

Auxiliary Battery:

2. Electric Motor

• Propels the vehicle.

6. Power Control Unit (Inverter):

• Charges the high voltage battery.

3. High Voltage Battery:

• Converts AC voltage to DC voltage.
• Provides power to the electric air conditioning compressor.
• Unlike conventional vehicles, the hybrid can run the air conditioning without running the engine.

Hybrid Transaxle:

• Plays a dual role.
• Provides both electrical and engine power to the wheels.
• Acts as a generator to charge the high voltage battery.

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1. Pressure Regulator:

• Maintains proper fuel pressure for optimum system operation.

2. Fuel Tank:

• Holds fuel for gasoline engine.
• Sealed unit that holds fuel for the gasoline engine and prevents emission of fuel vapours.
• Includes evaporative emissions system that recovers fuel vapours and use the trapped vapours in the engine
  itself.

3. Fuel Pump:

• Electric motor that ensures proper flow of fuel through the fuel system.
• The pump is located in the fuel tank.

4. Fuel Lines:

• Distribute fuel from the tank assembly to the engine.

5. Injectors:

• Open and close to provide fuel to individual cylinders.
• Control the fuel to each individual cylinder.
• Atomize (converts to a fine mist) fuel for optimum combustion and fuel economy.
• Impurities in the fuel can reduce injectors over time. Regular injector maintenance will keep your system
  performance.

Toyota Combustion EFI System Cleaner

Toyota Fuel Cleaner Additive

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