Engine Controls - Theory & Operation - EFI

• Introduction
• Intake Air Control System Operation
  • Supra (7M-GE)
• Variable Induction System Operation
  • CELICA (3S-GTE)
• Turbochargers Operation
  • CELICA Turbo (3S-GTE) & Supra Turbo (7M-GTE)
• TOYOTA Computer Control System (TCCS) Operation
• Control Unit Operation
  • Notes
  • Fail-Safe System
• Power Supply
  • EFI Main Relay
  • Circuit Opening Relay
• Input Devices Operation
  • Notes
  • A/C Switch
  • Airflow Sensor
  • Air Temperature Sensor
  • Battery Signal
  • Brake Light Signal
  • Camshaft Position Sensor (Supra Turbo)
  • Coolant Temperature Sensor
  • Coolant Temperature Switch (Pickup/4RUNNER W/3VZ-E)
  • Cranking Signal
  • EGR Gas Temperature Sensor (CALIF. Only)
  • Knock Sensor
  • Neutral/Start Switch
  • Oil Pressure Signal (Supra Turbo)
  • Oxygen (O2) Sensor (Zirconia Type)
  • Oxygen (O2) Sensor (Titania Type)
  • Rpm Signal
  • Sub-Oxygen Sensor (CALIF. Only)
  • Throttle Position Sensor (TPS)
  • Turbo Pressure Sensor
  • Vacuum Sensor (Corolla 4A-FE & Tercel 3E-E)
  • Vehicle Speed Sensor (VSS)
  • 4WD Switch (Land Cruiser & Pickup/4RUNNER)
• Output Signals Operation
• Fuel Delivery Operation
  • Circuit Opening Relay
  • Fuel Pump
  • Fuel Pressure Regulator
  • Fuel Pressure-Up System (CELICA Turbo, Corolla W/4A-GE, Land Cruiser, Pickup/4RUNNER W/22R-E & 3VZ-E, Supra Turbo & Tercel)
  • Fuel Pulsation Damper
• TCCS Component Locations
• Fuel Control Operation
  • Airflow Meter
  • Cold Start Injector
  • Cold Start Injector Time Switch
  • Deceleration Fuel-Cut System
  • EFI Main Relay
  • Fuel-Cut System
  • Fuel Injectors
  • Injector Resistor (CELICA Turbo & Supra Turbo)
  • Multi-Port Fuel Injection
  • Oxygen Sensor Heater
• Idle Speed Control Systems Operation
  • Auxiliary Air Valve (CELICA W/3S-GE, Corolla/Pickup/4RUNNER)
  • Idle Speed Control (ISC) (CAMRY, CELICA (Exc. 3S-GE), CRESSIDA, Land Cruiser, Supra & Tercel W/4A-FE
  • Idle-Up System (CELICA W/3S-GE, Corolla W/4A-FE & 4A-GE & Tercel W/3E-E)
• Ignition System Operation
  • Electronic Spark Advance (ESA) - All Except Supra Turbo
  • Electronic Spark Advance (ESA) - Supra Turbo
• Air Injection System Operation
  • Air Pump System (Land Cruiser)
  • Air Suction System (Pickup & 4RUNNER)
• Crankcase Ventilation Operation
• Dashpot System Operation
• EGR System Operation
• Evaporative Emission System Operation
• Self-Diagnostic System Operation
• Miscellaneous Controls
  • Transmission Controls
    • Electronically Controlled Transmission (ECT)