Engine Controls - Theory & Operation

• Introduction
• Computerized Engine Controls
  • MULTIPORT Fuel Injection (MFI)
  • Electronic Control Module (ECM)
  • Input Devices
    • Notes
    • A/C Switch
    • Mass Airflow (MAF) Sensor
    • Intake Air Temperature (IAT) Sensor
    • Barometric Pressure (BARO) Sensor
    • Camshaft Position (CMP) Sensor
    • Crankshaft Position/Cylinder Position (CKP/CYP) Sensor
    • Crankshaft Position (CKP) Sensor
    • Engine Coolant Temperature (ECT) Sensor
    • Idle Switch
    • Inhibitor Switch (A/T)
    • Knock Sensor (KS)
    • Neutral & Park Switch
    • Oxygen (O2) Sensor
    • Throttle Position (TP) Sensor
    • Throttle Switch
    • Vehicle Speed Sensor (VSS)
  • Output Signals
    • Notes
    • Idle Air Control (IAC) Valve
    • Canister Purge Control Valve (CPCV)
    • CHECK ENGINE Light
    • EGR Control Valve
    • Fast Idle Control Device (FICD) Solenoid Valve
    • Fuel Injector(s)
    • Fuel Pump Relay
    • Power Transistor
    • Self-Diagnostics
• Fuel System
  • Fuel Delivery
    • Fuel Pump
    • Fuel Pump Relay
    • Fuel Pressure Regulator
    • Fuel Pulsation Damper
  • Fuel Control (MFI)
    • Fuel Injectors
  • Idle Speed
    • Idle Air Control (IAC) Solenoid Valve
    • Idle Speed Control (ISC) Valve
    • Thermal Air Valve
• Ignition Systems
  • Power Transistor
  • DISTRIBUTORLESS Ignition
  • Ignition Timing Control System
    • Knock Sensor (KS)
    • Ignition Timing Advance Control
• Emission Systems
  • Fuel Evaporative System
    • Canister Purge Control Solenoid (CPCS) Valve
    • Canister Purge Control Valve (CPCV)
  • Positive Crankcase Ventilation (PCV)
• Self-Diagnostic System
  • Check Engine Light