Page 4 of 2000

ENGINE - 2AZ-FE ENGINE
DR011EG22 01NEG26Y
Air Flow During Engine Revolution
Wa t e r P u m p
Swirl Chamber
Crankshaft
Bearing Cap
Plastic Region
Tightening BoltsThermostat Housing
Air Conditioning
Compressor BracketsAir Passage Holes
Air Flow
NOTICE
Never attempt to machine the cylinder because it has a thin liner thickness.
EG-7
4. Cylinder Block
Lightweight aluminum alloy is used for the cylinder block.
By producing the thin cast-iron liners and cylinder block as a unit, compaction is realized.
Air passage holes are provided in the crankshaft bearing area of the cylinder block. As a result, the air at
the bottom of the cylinder flows smoother, and pumping loss (back pressure at the bottom of the piston
generated by the piston’s reciprocal movement) is reduced to improve the engine’s output.
The oil filter and the air conditioning compressor brackets are integrated into the crankcase. Also, the
water pump swirl chamber and thermostat housing are integrated into the cylinder block.
Page 11 of 2000
ENGINE - 2AZ-FE ENGINE
208EG07
VVT-i Controller
Camshaft Timing
Oil Control Valve
Oil Return
Hole
Oil PumpOil Filter Chain
Te n s i o n e r
01NEG33Y
Bypass
Va l v e
Relief
Va l v eMain Oil Hole
Oil Filter
Oil Pump
Oil StrainerChain
Te n s i o n e rCylinder Head
Exhaust
Camshaft
Journal
Oil Control
Va l v e
VVT-i Controller
Oil Pan
Intake
Camshaft
Journal
Crankshaft
Journal
Crankshaft
Pin
Oil Jet
Piston
Cylinder
Block
Barance
Shaft
Timing
Chain EG-14
LUBRICATION SYSTEM
1. General
The lubrication circuit is fully pressurized and oil passes through an oil filter.
The trochoid gear type oil pump is chain-driven by the crankshaft.
The oil filter is attached downward from the crankcase to improve serviceability.
Along with the adoption of the VVT-i system, the cylinder head is provided with a VVT-i controller and
a camshaft timing oil control valve. This system is operated by the engine oil.
Oil Circuit
Page 12 of 2000
ENGINE - 2AZ-FE ENGINE
01NEG34Y
Oil Jets
Check
Va l v e
Oil
Bottom Side View Oil Jet Cross SectionEG-15
Oil Capacity
Liters (US qts, Imp. qts)
Dry
5.0 (5.3, 4.4)
with Oil Filter4.3 (4.5, 3.8)
without Oil Filter4.1 (3.8, 3.1)
2. Oil Jet
Piston oil jets for cooling and lubricating the pistons are used in the cylinder block.
These oil jets contain a check valve to prevent oil from being fed when the oil pressure is low. This prevents
the overall oil pressure in the engine from dropping.
Page 31 of 2000
ENGINE - 2AZ-FE ENGINE
01MEG09Y
Accelerator Pedal
Position Sensor
Generator
MIL
DLC3Park / Neutral
Position Switch
Ignition
Switch
Circuit Opening RelayECM
Battery
Throttle
Position
Sensor
Throttle
Control
Motor
Purge VSVMass Air Flow Meter
Intake Air Temperature
Sensor
Camshaft Position
Sensor
Camshaft
Timing
Oil Control
Va l v e
Ignition Coil
with Igniter
Injector
Knock Sensor
Engine
Coolant
Temperature
Sensor
Crankshaft Position
Sensor
Canister
Filter
Fuel Pump
Canister Pump Module
Ve n t Va l v e
Leak Detection Pump
Canister Pressure SensorTWCs
Heated Oxygen Sensor
(Bank 1, Sensor 2)
Air-fuel Ratio Sensor
(Bank 1, Sensor 1) EG-34
3. Engine Control System Diagram
Page 67 of 2000

ENGINE - 2GR-FE ENGINEEG-71
FEATURES OF 2GR-FE ENGINE
The 2GR-FE engine has achieved the following performance through the use of the items listed below.
(1) High performance and reliability
(2) Low noise and vibration
(3) Lightweight and compact design
(4) Good serviceability
(5) Clean emission and fuel economy
Item
(1)(2)(3)(4)(5)
A steel laminate type cylinder head gasket is used.
An upright intake port is used.
EngineA taper squish shape is used for combustion chamber.Engine
ProperA cylinder block made of aluminum alloy is used.Proper
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 (Variable Valve Timing-intelligent)
system is used.
Va l v e
Mh i
Hydraulic lash adjusters are used.
MechanismTiming chains and chain tensioners are used.
Roller rocker arms are used.
Lubrication
SystemAn oil filter with a replaceable element is used.
Cooling SystemThe TOYOTA Genuine SLLC (Super Long Life Coolant)Cooling SystemThe TOYOTA Genuine SLLC (Super Long Life Coolant)
is used for the engine coolant.
The linkless-type throttle body is used.
Intake andThe intake air chamber made of plastic is used.Intake and
Exhaust
S
A stainless steel exhaust manifold is used.
SystemAn ultra thin-wall, high-cell density ceramic type TWC
(Three-Way Catalytic converter) is used.
The fuel delivery pipe made of plastic is used.
Fuel SystemA compact 12-hole type injector is used.Fuel SystemQuick connectors are used to connect the fuel hose with
the fuel pipe.
Ignition System
The DIS (Direct Ignition System) makes ignition timing
adjustment unnecessary.
Ignition System
The long-reach type spark plugs are used.
(Continued)
Page 75 of 2000
ENGINE - 2GR-FE ENGINE
285EG16
Oil Pan No. 1
Oil Filter Case Oil Pan No. 2EG-79
10. Oil Pan
The oil pan No. 1 is made of aluminum alloy.
The oil pan No. 2 is made of steel.
The oil pan No. 1 is secured to the cylinder block and the transmission housing and is increasing rigidity.
The oil filter case is integrated with the oil pan No. 1.
Page 80 of 2000
ENGINE - 2GR-FE ENGINE
285EG23
Oil Pump
Oil FilterOil Strainer EG-84
LUBRICATION SYSTEM
1. General
The lubrication circuit is fully pressurized and all oil passes through an oil filter.
A cycloid rotor type oil pump is used.
Oil Capacity
Dry6.5 Liters (6.9 US pts, 5.7 Imp. qts)
With Oil Filter6.1 Liters (6.4 US pts, 5.4 Imp. qts)
Without Oil Filter5.7 Liters (6.0 US pts, 5.0 Imp. qts)
Page 81 of 2000
ENGINE - 2GR-FE ENGINE
285EG77
Main Oil Hole
Cylinder Head
(for Left Bank)
Oil
Filter
Exhaust
Camshaft
Timing OCV*
Intake
Camshaft
Timing OCV*
Oil
PumpExhaust
VVT-i
Controller
Intake
VVT-i
Controller
Relief
Va l v e
Cylinder Head
(for Right Bank)
Exhaust
Camshaft
Timing OCV*
Intake
Camshaft
Timing OCV*
Exhaust
VVT-i
Controller
Intake
VVT-i
Controller
Secondary
Chain
TensionerPrimary
Chain
Tensioner
Secondary
Chain
Tensioner
Cylinder
Block
Crankshaft
Journal
Crankshaft
Pins
Connecting
Rods
Cylinder Head
(for Left Bank)
Oil
Jets
Intake
Camshaft
Journal
Exhaust
Camshaft
Journal
Lash
Adjuster
Cylinder Head
(for Right Bank)
Intake
Camshaft
Journal
Exhaust
Camshaft
Journal
Lash
Adjuster
Oil PanEG-85
Oil Circuit
*: Oil Control Valve