1. 1NZ-FE / 2NZ-FE Engine Engine Overall Engine Proper Valve mechanism
Cooling System
Intake and Exhaust System
Fuel System
Ignition System
Engine Control System

2. 1NZ-FE / 2NZ-FE Engine Engine Overall-T -M
1NZ-FE / 2NZ-FE Engine
Engine Overall
4-cylinder, 16-valve, DOHC, Chain drive with VVT-i engines, Tier 1 (Taiwan model), Euro STEP III (Thailand and Philippines)

3. 1NZ-FE / 2NZ-FE Engine Engine Overall Engine Specification -R -T -M
No. of Cylinders and Arrangement
4-cylinder, In-line 
Valve Mechanism
16-valve, DOHC, Chain Drive
Displacement [cm3 (cu. in.)]
1497 (91.3)
1299 (79.3)
Bore x Stroke [mm (in.)]
75.0 x 84.7 (2.95 x 3.33)
75.0 x 73.5 (2.95 x 2.89)
Compression Ratio
10.5 : 1
Maximum Output [kW / rpm]
80 / 6,000
63 / 6,000
Maximum Torque [N·m / rpm]
142 / 4,200
122 / 4,400
Valve Timing
Intake
Open
-7  33 BTDC
Close
52  12 ABDC
Exhaust
42 BBDC
34 BBDC
2 ATDC
Research Octane Number (RON)
-R: 92 or more, -T,-M: 91 or more
Oil Viscosity
5W-30
Oil Grade
API SL-EC or ILSAC GF-3

4. 1NZ-FE / 2NZ-FE Engine Engine Proper Offset Crankshaft-M
1NZ-FE / 2NZ-FE Engine
Engine Proper
Offset Crankshaft
The side force when the maximum pressure is applied has been reduced and fuel economy has been improved
Crankshaft Center
Bore Center
Offset 12 mm

5. 1NZ-FE / 2NZ-FE Engine Engine Proper Piston-M
1NZ-FE / 2NZ-FE Engine
Engine Proper
Piston
The top of the piston is used a taper squish shape to improve combustion performance
Taper Squish Shape

6. Disconnect the Adjusting Shim-R -T -M
1NZ-FE / 2NZ-FE Engine
Valve Mechanism
Overall
A roller timing chain is used to achieve maintenance free
Disconnect the Adjusting Shim
Timing Chain
VVT-i Controller
Chain Tensioner

7. Aluminum Radiator Core
1NZ-FE / 2NZ-FE Engine
Cooling System
Radiator and Cooling Fan
An aluminum radiator core and fan shroud integration type reservoir tank are used for weight reduction
Aluminum Radiator Core
Reservoir Tank
Cooling Fan

8. 1NZ-FE / 2NZ-FE Engine Intake and Exhaust System Air Cleaner
A frameless, full-fablic air cleaner element is used to reduce weight reduction and to simplify its disposal

9. Heated Oxygen Sensor (Except Taiwan)-M
1NZ-FE / 2NZ-FE Engine
Intake and Exhaust System
Exhaust Pipe
Stainless exhaust pipe is used for weight reduction
Dual pipe
construction
TWC
Sub Muffler
Main Muffler
Exhaust pipe: 1NZ-FE and 2NZ-FE engines used same exhaust pipe (Common parts)
Stainless is used for pipe and muffler
TWC capacity: 11R
Ball Joint
Heated Oxygen Sensor
Heated Oxygen Sensor (Except Taiwan)

10. 1NZ-FE / 2NZ-FE Engine Intake and Exhaust System-R -T -M
1NZ-FE / 2NZ-FE Engine
Intake and Exhaust System
TWC (Three-way Catalytic Converter)
Ultra thin wall, high-cell type TWC has been adopted. Thus it improves exhaust emission
Wall Thickness mm
Cell Pitch 1.27 mm
Volume [cm3 (in.)]
1083 (66.1)
Cell Density [cells/cm2 (cells/in2)]
62 (400)
Wall Thickness [mm (in)]
0.075 (0.0030)

11. [Module Type Fuel Pump]-R -T -M
1NZ-FE / 2NZ-FE Engine
Fuel System
Fuel Pump
A compact fuel pump in which a fuel filter and pressure regulator are integrated in the module fuel pump assembly is used
[Module Type Fuel Pump]
Fuel Cutoff Valve
Fuel Pump
Fuel Filter
Pressure Regulator
Pressure Regulator
Sender Gauge
Fuel Pump

12. 1NZ-FE / 2NZ-FE Engine Fuel System Fuel Returnless System
This system helps prevent the internal temperature of the fuel tank from rising, and reduces evaporative emissions
Injector
Delivery Pipe
Pulsation Dumper
Fuel Filter
Fuel Cutoff Valve
Pressure Regulator
: Only the quantity required of fuel is supplied
[Fuel Tank]
: The fuel of a surplus quantity is returned
Fuel Pump

13. 1NZ-FE / 2NZ-FE Engine Fuel System Injector
Compact 12-hole type injector is used to improve the atomization of fuel
12 Holes

14. 1NZ-FE / 2NZ-FE Engine Ignition System DIS (Direct Ignition System)
Ignition coil integrated with the igniter

15. Every 20,000 km or every 24 months????
1NZ-FE / 2NZ-FE Engine
Ignition System
Spark Plug
A compact with resister type is used
Engine
1NZ-FE
2NZ-FE
DENSO
K16R-U
K16R-U11
NGK
BKR5EYA
BKR5EYA11
Plug Gap
mm ( in.)
Maintenance Pitch
Every 20,000 km or every 24 months???? 

16. 1NZ-FE / 2NZ-FE Engine Engine Control System
The Maine Components of Engine Control System
Destination
Taiwan
Thailand and Philippines
Engine
1NZ-FE
2NZ-FE
CPU
32 bit 
Emission
Tier 1
Euro STEP III
Mass Air Flow Meter
Hot-wire Type
Crankshaft Position Sensor (Rotor Teeth)
Pick-up Coil Type (36-2)
Camshaft Position Sensor (Rotor Teeth)
Pick-up Coil Type (3)
Throttle Position Sensor
Linear Type
Knock Sensor
Piezoelectric Element Type
Oxygen Sensor
Oxygen Sensor x 1
Heated Oxygen Sensor x2
Injector
12-hole Type (Independent Injection)
Ignition
S-TDI
IAC Valve
Rotary Solenoid Type

17. Throttle Position Sensor-M
1NZ-FE / 2NZ-FE Engine
Engine Control System
VVT-i (Variable Valve Timing-intelligent) System
The VVT-i system is designed to control the intake camshaft to provide a valve timing that is optimally suited to the engine condition
VVT-i Controller
Camshaft Position Sensor
Throttle Position Sensor
Camshaft Timing Oil Control Valve
Engine ECU
Water Temp. Sensor
Crankshaft Position Sensor
Air Flow Meter

18. 1NZ-FE / 2NZ-FE Engine Engine Control System VVT-i System
In proportion of the following signal, the engine ECU calculates an optimal valve timing
[Engine ECU]
Crankshaft Position Sensor
Target Valve Timing
Camshaft Timing Oil Control Valve
Air Flow Meter
Throttle Position Sensor
Duty Control
Water Temp. Sensor
Correction
Vehicle Speed Sensor
Feedback
Actual Valve Timing
Camshaft Position Sensor

19. 1NZ-FE / 2NZ-FE Engine Engine Control System VVT-i System
VVT-i operating condition
Operation State
Valve Timing
Effect
Idle
Stable idle rpm better fuel economy
Light Load
Ensured engine stability
Medium Load
Better fuel economy improved emission control
Low/Middle speed Heavy Load
Improved torque/output
High speed Heavy Load
Improved output
Low Temp.
Stable fast idle better fuel economy
Starting/Stopping
Improved starting IN EX
Retard IN EX
Advance IN EX IN EX
Advance
Retard IN EX IN EX IN EX

20. Vane (Fixed on Intake Camshaft)-R -T -M
1NZ-FE / 2NZ-FE Engine
Engine Control System
VVT-i System
This controller consists of the housing driven from the timing chain and the vane coupled with the intake camshaft
[Engine Stop]
[Engine Running]
Housing
Oil Pressure
Lock Pin
Vane (Fixed on Intake Camshaft)

21. To VVT-I Controller (Advanced Side) (Retard Side)-M
1NZ-FE / 2NZ-FE Engine
Engine Control System
VVT-i System
The camshaft timing oil control valve controls the spool valve position in accordance with the duty control from the engine ECU
To VVT-I Controller (Advanced Side) (Retard Side)
Engine ECU
Spool Valve
Drain
Plunger
Oil Pressure
Coil

22. -R -T -M
1NZ-FE / 2NZ-FE Engine
Engine Control System
VVT-i System