ENGINE FEATURES [ZJ, ZY]
id0100001002c0
On-board diagnostic
To meet the EOBD regulations
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• Diagnostic test modes adopted
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Improved serviceability
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• DTCs adopted
• KOEO/KOER self test function adopted
• PID/DATA monitor function adopted
• Active command modes function adopted
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Mechanical
Improved engine performance
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• A variable valve timing mechanism has been adopted.
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Reduced engine weight
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• The shimless tappet has been adopted.
• Main parts (cylinder head and cylinder block) are made of aluminum alloy.
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Reduced engine noise and vibration
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• 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.
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Improved serviceability
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• 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.)
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Lubrication
Reduced weight
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• Aluminum alloy oil pump cover adopted
• Plastic oil strainer adopted
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Improved lubricity
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• Trochoid gear type oil pump adopted
• Oil jet valves adopted
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Cooling System
Reduced weight
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• Down-flow type radiator with aluminum core and plastic tank adopted
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Miniaturization
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• Built-in type water pump adopted
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Reduced engine noise and vibration
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• Electric cooling fan adopted
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Improved serviceability
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• Longer-life engine coolant (type FL22) adopted
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Intake-air System
Improved engine torque
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• Variable intake air system adopted (with variable intake air system)
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Improved noise reduction
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• Resonance chamber adopted (with resonance chamber)
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Improved emission gas purification
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• Variable tumble system adopted
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Fuel System
Improved serviceability
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• Nylon tubes adopted for fuel hoses in the engine compartment and around the fuel tank, and quick release connectors adopted for joints
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Reduction of evaporative gas
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• Returnless fuel system adopted
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Emission System
Improved exhaust gas purification
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• Catalytic converter system adopted
• Exhaust gas recirculation (EGR) system adopted
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Charging System
Miniaturization
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• Non-regulator type generator with built-in power transistor adopted
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Ignition System
Improved reliability
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• Independent ignition control system with distributorless ignition coils adopted
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Improved durability
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• Spark plugs with an iridium alloy center electrode and platinum tip ground electrode adopted
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Starting System
Improved startability
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• Reduction type starter adopted
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Control System
Improved driveability
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• Drive-by-wire control adopted
• Variable intake air control adopted
• Variable valve timing control adopted
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Improved emission performance
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• 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
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Improved fuel economy
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• A drive-by-wire control (idle air control) has been adopted which contributes to lower fuel consumption
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Wiring harness simplification
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• CAN adopted
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Improved accuracy
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• Camshaft position sensor with GMR element adopted
• Crankshaft position sensor with GMR element adopted
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Improved reliability
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• Two-circuit throttle position sensor adopted
• Two-circuit accelerator pedal position sensor adopted
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