ENGINE FEATURES [ZJ, ZY]

id0100001002c0

On-board diagnostic

To meet the EOBD regulations

•  Diagnostic test modes adopted

Improved serviceability

•  DTCs adopted

•  KOEO/KOER self test function adopted

•  PID/DATA monitor function adopted

•  Active command modes function adopted

Mechanical

Improved engine performance

•  A variable valve timing mechanism has been adopted.

Reduced engine weight

•  The shimless tappet has been adopted.

•  Main parts (cylinder head and cylinder block) are made of aluminum alloy.

Reduced engine noise and vibration

•  The cylinder head is made of aluminum alloy.

•  A silent timing chain has been adopted.

•  A highly rigid aluminum cylinder block and lower cylinder block have been adopted.

•  A crankshaft pulley with torsional damper has been adopted.

•  A pendulum type engine mount has been adopted.

Improved serviceability

•  A serpentine type drive belt has been adopted.

•  Drive belt tension is adjusted automatically with an auto-tensioner.

•  A timing chain has been adopted to eliminate the need for its replacement.

•  An engine front cover with a service hole has been adopted. (for unlocking the chain adjust ratchet and securing the tensioner arm.)

Lubrication

Reduced weight

•  Aluminum alloy oil pump cover adopted

•  Plastic oil strainer adopted

Improved lubricity

•  Trochoid gear type oil pump adopted

•  Oil jet valves adopted

Cooling System

Reduced weight

•  Down-flow type radiator with aluminum core and plastic tank adopted

Miniaturization

•  Built-in type water pump adopted

Reduced engine noise and vibration

•  Electric cooling fan adopted

Improved serviceability

•  Longer-life engine coolant (type FL22) adopted

Intake-air System

Improved engine torque

•  Variable intake air system adopted (with variable intake air system)

Improved noise reduction

•  Resonance chamber adopted (with resonance chamber)

Improved emission gas purification

•  Variable tumble system adopted

Fuel System

Improved serviceability

• Nylon tubes adopted for fuel hoses in the engine compartment and around the fuel tank, and quick release connectors adopted for joints

Reduction of evaporative gas

• Returnless fuel system adopted

Emission System

Improved exhaust gas purification

• Catalytic converter system adopted

• Exhaust gas recirculation (EGR) system adopted

Charging System

Miniaturization

• Non-regulator type generator with built-in power transistor adopted

Ignition System

Improved reliability

• Independent ignition control system with distributorless ignition coils adopted

Improved durability

• Spark plugs with an iridium alloy center electrode and platinum tip ground electrode adopted

Starting System

Improved startability

• Reduction type starter adopted

Control System

Improved driveability

•  Drive-by-wire control adopted

•  Variable intake air control adopted

•  Variable valve timing control adopted

Improved emission performance

•  Variable tumble control adopted

•  A heater element is integrated with the A/F sensor and HO2S

•  All-range air/fuel ratio sensor adopted

•  EGR system adopted

Improved fuel economy

•  A drive-by-wire control (idle air control) has been adopted which contributes to lower fuel consumption

Wiring harness simplification

•  CAN adopted

Improved accuracy

•  Camshaft position sensor with GMR element adopted

•  Crankshaft position sensor with GMR element adopted

Improved reliability

•  Two-circuit throttle position sensor adopted

•  Two-circuit accelerator pedal position sensor adopted

To meet the EOBD regulations	• Diagnostic test modes adopted
Improved serviceability	• DTCs adopted • KOEO/KOER self test function adopted • PID/DATA monitor function adopted • Active command modes function adopted

Improved engine performance	• A variable valve timing mechanism has been adopted.
Reduced engine weight	• The shimless tappet has been adopted. • Main parts (cylinder head and cylinder block) are made of aluminum alloy.
Reduced engine noise and vibration	• The cylinder head is made of aluminum alloy. • A silent timing chain has been adopted. • A highly rigid aluminum cylinder block and lower cylinder block have been adopted. • A crankshaft pulley with torsional damper has been adopted. • A pendulum type engine mount has been adopted.
Improved serviceability	• A serpentine type drive belt has been adopted. • Drive belt tension is adjusted automatically with an auto-tensioner. • A timing chain has been adopted to eliminate the need for its replacement. • An engine front cover with a service hole has been adopted. (for unlocking the chain adjust ratchet and securing the tensioner arm.)

Reduced weight	• Aluminum alloy oil pump cover adopted • Plastic oil strainer adopted
Improved lubricity	• Trochoid gear type oil pump adopted • Oil jet valves adopted

Reduced weight	• Down-flow type radiator with aluminum core and plastic tank adopted
Miniaturization	• Built-in type water pump adopted
Reduced engine noise and vibration	• Electric cooling fan adopted
Improved serviceability	• Longer-life engine coolant (type FL22) adopted

Improved engine torque	• Variable intake air system adopted (with variable intake air system)
Improved noise reduction	• Resonance chamber adopted (with resonance chamber)
Improved emission gas purification	• Variable tumble system adopted

Improved serviceability	• Nylon tubes adopted for fuel hoses in the engine compartment and around the fuel tank, and quick release connectors adopted for joints
Reduction of evaporative gas	• Returnless fuel system adopted

Improved reliability	• Independent ignition control system with distributorless ignition coils adopted
Improved durability	• Spark plugs with an iridium alloy center electrode and platinum tip ground electrode adopted

Improved driveability	• Drive-by-wire control adopted • Variable intake air control adopted • Variable valve timing control adopted
Improved emission performance	• Variable tumble control adopted • A heater element is integrated with the A/F sensor and HO2S • All-range air/fuel ratio sensor adopted • EGR system adopted
Improved fuel economy	• A drive-by-wire control (idle air control) has been adopted which contributes to lower fuel consumption
Wiring harness simplification	• CAN adopted
Improved accuracy	• Camshaft position sensor with GMR element adopted • Crankshaft position sensor with GMR element adopted
Improved reliability	• Two-circuit throttle position sensor adopted • Two-circuit accelerator pedal position sensor adopted