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Engine Overall Fuel System Engine Control System Service Points

DIS ETCS-i VVT-i Engine Overall 1NZ-FE Instructors Engine Overall 1NZ-FE In-line 4-cylinder, 1.5-liter, 16-valve DOHC gasoline engine DIS ETCS-i VVT-i [Feature of 1NZ-FE (for –A, -K, -Q, -T, -D, -E) / 2NZ-FE Engine (for –Q, –V and Gen)] In-line 4-cylinder, 1.5 (1.3)-liter, 16-valve DOHC gasoline engine Equipment: VVT-i, ETCS-i and DIS DIS: Direct Ignition System; ETCS-i: Electronic Throttle Controlled System Intelligent; VVT-i: Variable Valve Timing Intelligent Engine New Model - Engine

16-valve, DOHC with VVT-i, Chain Drive Engine Overall Specification of 1NZ-FE Engine Model Vios Engine 1NZ-FE No. of Cylinders and Arrangement 4-cylinder, In-line Valve Mechanism 16-valve, DOHC with VVT-i, Chain Drive Displacement [cm3 (cu. in.)] 1,497 (91.3) Bore x Stroke [mm (in.)] 75.0 x 84.7 (2.95 x 3.33) Compression Ratio 10.5 : 1 Maximum Output (kW/rpm) 80 @ 6,000 (109 hp) Maximum Torque (N.m/rpm) 141 @ 4,200 (14.4 kgf) Oil Viscosity / Oil Grade API SL, SM or ILSAC Emission Regulation EURO III

Cranking hold function Instructors Engine Overall Major difference from previous model Cranking hold function ETCS-i Spiny liner Engine ECU (ECM) is located in engine compartment CAN communication [Major difference from previous model] - ETCS-i is used for all model - Spiny liner is used - 6-layer plastic type fuel tank - Cranking hold function is used for all model - CAN communication is used for the diagnosis communication - Engine ECU (ECM) is located in engine compartment - Charcoal canister is integrated in fuel pump module (except –A, -K) - Key-off pump module is used (-A, -K only) - Iridium spark plug is used (-A, -K only) Heated O2 Sensor: B1 S1 B1 S2 Charcoal canister is integrated in fuel pump module 6-layer plastic fuel tank Engine New Model - Engine

Engine Overall Major difference from previous model VVT-i operation range (Intake valve opening/closing) has been change to suit vehicle characteristic Intake Valve Current Vios New Vios Yaris Open (°, BTDC) -7 ~ 53 -7 ~ 33 Close (°, ABDC) 52 - 8 52 ~ 12 Range (°) 241 225

Engine Overall Serpentine Belt & Hydraulic Engine Mount

Fuel System Charcoal Canister Instructors Fuel System Charcoal Canister Charcoal canister is integrated in fuel pump module To purge valve Fuel Main Tube To atmospheric Charcoal Canister Charcoal canister is integrated in fuel pump module (except –A, -K model) Fuel Pump Fuel Pump Module Engine New Model - Engine

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

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

Engine Control System ECU calculates based on sensor’s signals and actuates throttle motor to open the throttle Throttle Position Sensor Accelerator Pedal Position Sensor Throttle Control Motor Engine ECU Ignition Coil Air Flow Meter Fuel Injector

Engine Control System No-contact type throttle position sensor Throttle Control Motor Reduction Gears Throttle Valve Throttle Position Sensor Hall ICs Magnets

Engine Control System No-contact type pedal accelerator position sensor Magnets Hall ICs Accelerator Pedal Arm

Operates Automatically Instructors 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 Cranking hold function is used for all model Starter Stop Operates Stop Engine starts A/T Model: Approx. > 500 rpm Engine New Model - Engine

Engine Control System Cranking Hold Function System Diagram Engine ECU Instructors Engine Control System Cranking Hold Function System Diagram Audio & Illumination ACC ACC Cut Relay ST Ignition Switch ACCR Engine Coolant Temp. Sensor STSW THW STAR Crankshaft Position Sensor NE Neutral Start Switch (AT) or Clutch Switch (MT) ACC circuit is cut off while cranking to prevent the accessory illumination from operating intermittently STA Engine ECU (ECM) Starter Relay Starter Hints for Engine starting A/T model: Push “Start” button + press brake pedal M/T model: Turn IG start s/w + press clutch pedal Engine New Model - Engine

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

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

Engine Control System Communication Instructors Engine Control System Communication CAN Communication is used for high speed data transmission, realize accurate control of power train and chassis system. J/C DLC3 Engine ECU (ECM) Intelligent Tester II Engine ECU (ECM) uses the CAN protocol for diagnostic communication and communication with other ECUs -A, -K: Hand-held Tester and a CAN VIM (Vehicle Interface Module) are required for accessing diagnostic data CAN Skid Control ECU Main Body ECU Certification ECU Meter ECU etc. Engine New Model - Engine

Water Proof Connector for Engine & ECT ECU Instructors Engine Control System Engine & ECT ECU (ECM) Engine ECU (ECM) is located in engine compartment Water Proof Connector for Engine & ECT ECU Engine ECU (ECM) is located in engine compartment Therefore, the water proof connector is used Engine New Model - Engine

Service Point (Engine Control System) Instructors Service Point (Engine Control System) Inspection Procedure In adoption of water proof connector, check for open circuit in engine ECU (ECM) cannot be done [Conventional Type] SST (Check Wire) In adoption of water proof connector, check for open circuit in engine ECU (ECM) cannot be done Engine New Model - Engine

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

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