Engine Controls - Theory & Operation

• Introduction
• Computerized Engine Controls
• Control Unit Operation
  • Notes
  • Fail-Safe Function
  • High Engine Speed Cut-Off
• Circuit Opening Relay Operation
• EFI Main Relay Operation
• Input Devices
  • Notes
  • Airflow Meter (Es250)
  • Airflow Meter (LS400)
  • Air Temperature Sensor
  • Cold Start Injector Time Switch
  • Coolant Temperature Sensor
  • Cam Position Sensor (LS400)
  • Clutch Start Switch
  • Crankshaft Angle Sensor (Es250)
  • Engine Speed (Or Rpm) Sensor
  • Exhaust Gas Temperature Sensor (LS400)
  • Knock Sensor
  • Neutral Start Switch
  • Oxygen Sensor
  • Throttle Position Sensor
  • Vehicle Speed Sensor
• Output Signals
• Fuel Pump Operation
• Fuel Pressure Regulator Operation
• Pulsation Damper Operation
• Fuel Control
  • Cold Start Injector
  • Fuel Injectors
  • Fuel Pressure Control
  • Fuel Pump Speed Control (LS400)
• Idle Speed
  • Idle Speed Control (ISC) Valve
• Electronic Spark Advance (ESA) Operation
• Crankcase Ventilation Operation
• Dashpot System Operation
• Deceleration Fuel-Cut System Operation
• EGR System Operation
• Evaporative Emission System Operation
• Oxygen Sensor Heater Control Operation
• Self-Diagnostic System
• Check Engine Light
  • CALIFORNIA Models
• Miscellaneous Controls
  • Notes
  • A/C Clutch
  • Electronically Controlled Transaxle (Es250)
  • Electronically Controlled Transmission With Intelligent Control System (LS400)