Engine Controls - Theory & Operation

• Introduction
• Air Induction System
• Computerized Engine Controls
  • Notes
  • Electronic Control Module (ECM)
    • Fuel Injection Control
    • Engine Idle Speed Control
    • Ignition Timing Control
    • Other Control Functions
  • Input Devices
    • Notes
    • A/C Switch
    • Acceleration Sensor (Accent, Elantra & Tiburon)
    • Camshaft Position (CMP) Sensor
    • Crankshaft Position (CKP) Sensor
    • Engine Coolant Temperature (ECT) Sensor
    • Fuel Tank Pressure (FTP) Sensor
    • Heated Oxygen Sensor (HO2S)
    • Idle Position Switch (Sonata 2.4L)
    • Intake Air Temperature (IAT) Sensor
    • Knock Sensor (KS)
    • Mass Airflow (MAF) Sensor
    • Manifold Absolute Pressure (MAP) Sensor (Sonata 2.4L)
    • Power Steering Pressure (PSP) Switch
    • Throttle Position (TP) Sensor
    • Transaxle Range Switch (A/T)
    • Vehicle Speed Sensor (VSS)
  • Output Signals
    • Notes
    • A/C Clutch
    • A/C Condenser Fan Relay
    • Blower Motor Relay
    • Canister Close Valve
    • Canister Purge Valve
    • EGR Control Solenoid Valve
    • Engine Control Relay
    • Fuel Injectors
    • Fuel Pump Relay
    • Idle Speed Control (ISC) Actuator
    • Malfunction Indicator Light (MIL)
    • Radiator Cooling Fan Relay
• Fuel System
  • Fuel Delivery
    • Notes
    • Fuel Pump
    • Fuel Pressure Regulator
    • Fuel Pump Relay
  • Fuel Control
    • Fuel Injectors
  • Idle Speed
    • Idle Speed Control (ISC) Actuator
• Ignition System
  • Direct Ignition System (Dis)
  • Ignition Timing Control System
• Emission Systems
  • Exhaust Gas RECIRCULATION (EGR) Control
    • Sonata 2.4L
  • Evaporative & ORVR Emission (EVAP) Control System
    • Notes
    • EVAP Canister Purge Solenoid Valve
  • Positive Crankcase Ventilation (PCV) Valve
• Self-Diagnostic System
  • Notes
  • Malfunction Indicator Light (Mil)
• Miscellaneous Controls
  • Notes
  • A/C Clutch