Engine Controls - Theory & Operation

• Introduction
• Air Induction System
  • Fuel Injection (TBI)
• Computerized Engine Controls
  • Notes
  • Electronic Control Module (ECM)
  • Input Devices
    • Coolant Temperature Sensor (CTS)
    • Distributor Reference Signal
    • Exhaust Gas Oxygen (O2) Sensor
    • Manifold Absolute Pressure (MAP) Sensor
    • Manifold Air Temperature (MAT) Sensor (2.0L)
    • Park/Neutral (P/N) Switch
    • Throttle Position Sensor (TPS)
    • Vehicle Speed Sensor (VSS)
  • Output Signals
• Fuel System
  • Fuel Delivery
    • Fuel Pressure Regulator
    • Fuel Pump
    • Fuel Pump Relay
  • Fuel Control
    • Fuel Injector Solenoid
  • Idle Control
    • Idle Air Control Valve (IACV)
    • A/C Compressor Clutch (ECM Controlled)
• Ignition System
  • High Energy Ignition (HEI)
  • Electronic Spark Timing (Est) Control
• Emission Systems
  • Exhaust Gas RECIRCULATION (EGR) System
  • Evaporative Emission Control System (EECS)
    • Notes
    • Purge Valve
  • Intake Air Control System (1.6L)
    • Thermostatic Air Cleaner (THERMAC)
  • Crankcase Ventilation System (1.6L)
  • Positive Crankcase Ventilation (PCV) System (2.0L)
• Self-Diagnostic System
  • Service Engine Soon (SES) Light
  • ALDL Diagnostic Connector
• Miscellaneous Controls
  • Engine Cooling Fan
  • Torque Converter Clutch (TCC) Solenoid
  • Transmission Shift Light (Manual Transmission)