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Contents

Click a Section Tab. Contents. Engine Overall Fuel System Engine Control System Service Points. Engine Overall. 1NZ-FE In-line 4-cylinder, 1.5-liter, 16-valve DOHC gasoline engine. DIS. ETCS-i. VVT-i.

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Contents

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  1. Click a Section Tab Contents

  2. Engine Overall • Fuel System • Engine Control System • Service Points

  3. Engine Overall • 1NZ-FE • In-line 4-cylinder, 1.5-liter, 16-valve DOHC gasoline engine DIS ETCS-i VVT-i DIS: Direct Ignition System; ETCS-i: Electronic Throttle Controlled System Intelligent; VVT-i: Variable Valve Timing Intelligent

  4. Engine Overall • Specification of 1NZ-FE Engine

  5. Engine Overall • Major difference from previous model Cranking hold function ETCS-i • Engine ECU (ECM) is located in engine compartment • CAN communication • Heated O2 Sensor: • B1 S1 • B1 S2 Charcoal canister is integrated in fuel pump module 6-layer plastic fuel tank

  6. Engine Overall • Serpentine Belt & Hydraulic Engine Mount

  7. Fuel System • Charcoal Canister • Charcoal canister is integrated in fuel pump module To purge valve Fuel Main Tube To atmospheric Charcoal Canister Fuel Pump Fuel Pump Module

  8. Electronic Throttle Control System – Intelligent is used Non-linear control & Idle speed control by ETCS-i Basic operation same as Yaris engine Engine Control System : Engine Number Location

  9. Engine ECU calculates optimal throttle opening angle that is appropriate for the respective driving condition (non-linear control) Engine Control System

  10. Engine Control System • Cranking Hold Function • Once the ignition switch is turned to “Start”, starter operates until engine starting (approx. > 600 rpm) “Start” “ON” Ignition Switch Operates Automatically Starter Operates Stop Stop Engine starts

  11. : Without this system : With this system Engine Control System • Cranking Hold Function • Operation (approx. 2 ~ 25 seconds) Start Ignition Switch ON ON ACC Power OFF Automatically Controlled Starter Relay ON OFF Judgment NE Signal Time

  12. Engine Control System • 2 TWC’s are used • O2 Sensors is used to detect oxygen concentration on exhaust emission Heated O2 Sensor B1 S1 TWC’s Heated O2 Sensor B1 S2 Previous

  13. DLC3 Engine Control System • Communication • CAN Communication is used for high speed data transmission, realize accurate control of power train and chassis system. J/C Engine ECU (ECM) Intelligent Tester II CAN • Skid Control ECU • Main Body ECU • Certification ECU • Meter ECU • etc.

  14. Engine & ECT ECU(ECM) Engine ECU (ECM) is located in engine compartment Engine Control System Water Proof Connector for Engine & ECT ECU

  15. Service Point • Opening Engine Hood • 2 holes available for serviceability Higher Engine Hood Opening 1 2 2 1

  16. Service Point • 6-layers, 4 materials plastic fuel tank • When scrapping the vehicle, drill a hole on the drain mark to drain the fuel before scrapping • SST for removing fuel pump retainer Drain Mark 09808-14020 (09808-01410, 09808-01420, 09808-01430) Charcoal Filter

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