Engine Controls - Theory & Operation

• Introduction
• Air Induction System
  • Intake Air Control System
    • Supra (7M-GE)
  • Variable Induction System
    • Celica Turbo & MR2 Turbo
  • Turbochargers
    • Celica Turbo, MR2 Turbo & Supra Turbo
• Computerized Engine Controls
  • TOYOTA Computer Control System (TCCS)
  • Control Unit
  • Fail-Safe System
  • Power Supply
    • EFI Main Relay
    • Circuit Opening Relay
  • Input Devices
    • Notes
    • A/C Switch
    • Airflow Sensor
    • Air Temperature Sensor
    • Battery Signal
    • Brake Light Signal
    • Camshaft Position Sensor (Supra Turbo)
    • Coolant Temperature Sensor (CTS)
    • Coolant Temperature Switch (Land Cruiser)
    • Cranking Signal
    • EGR Gas Temperature Sensor (Calif.)
    • Knock Sensor
    • Neutral/Start Switch
    • Oil Pressure Switch Signal (Supra Turbo)
    • Oxygen (O2) Sensor (Zirconia Type - Calif.)
    • Oxygen (O2) Sensor (Titania Type - Federal)
    • RPM Signal
    • Sub-Oxygen Sensor (Calif.)
    • Throttle Position Sensor (TPS)
    • Turbo Pressure Sensor (Celica Turbo)
    • Vacuum Sensor (Celica Non-Turbo, Corolla 4A-FE, MR2 5S-FE & Tercel)
    • Vehicle Speed Sensor (VSS)
    • 4WD Switch (Land Cruiser, Pickup & 4Runner)
  • Output Signals
    • Notes
    • A/C Cut Control System
    • Air Injection Solenoid
    • Air Suction Control Solenoid
    • Circuit Opening Relay
    • Dashpot System
    • Electronic Fuel Injection
    • Electronic Spark Advance
    • EGR Control Solenoid
    • Electronic Controlled Transmission (ECT)
    • Fuel Pressure Vacuum Switching Valve
    • Fuel Pump
    • Idle Speed Control
    • Idle-Up System
    • Intake Air Control System
    • O2 Sensor Heater
    • Self-Diagnostic System
    • Turbocharger Vacuum Switching Valve (VSV)
    • Variable Induction Vacuum Switching Valve (VSV)
• Fuel System
  • Fuel Delivery
    • Circuit Opening Relay
    • Fuel Pump
    • Fuel Pressure Regulator
    • Fuel Pressure-Up System (Camry 3S-FE, Corolla 4A-GE, Land Cruiser, MR2 5S-FE, Pickup, Previa, Supra Turbo, Tercel & 4Runner)
    • Fuel Pulsation Damper
  • Fuel Control
    • 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, MR2 Turbo & Supra Turbo)
    • Port Fuel Injection
    • Oxygen Sensor Heater
  • Idle Speed
    • A/C Cut Control System (Celica Non-Turbo, Corolla, MR2 Non-Turbo & Previa)
    • Auxiliary Air Valve (Celica 4A-FE, Corolla, Pickup 22R-E, Tercel & 4Runner 22R-E)
    • Idle Speed Control (Camry, Celica 3S-GTE & 5S-FE, Cressida, Land Cruiser, MR2, Previa & Supra)
    • Idle-Up System (Celica 4A-FE, Corolla & Tercel)
• Component Locations
• Ignition System
  • Electronic Spark Advance (ESA)
    • Except Supra Turbo
    • Supra Turbo
• Emission Systems
  • Air Injection
    • Air Pump System (Land Cruiser)
  • Air Suction (As) System (Pickup & 4RUNNER)
  • Crankcase Ventilation
  • Dashpot System
  • EGR System
  • Evaporative Emission System (EVAP)
• Self-Diagnostic System
• Miscellaneous Controls
  • Transmission Controls
    • Electronically Controlled Transmission (ECT)