Engine Controls - Theory & Operation

• Introduction
• Air Induction System (PFI & TBI)
  • Air Intake System
  • By-Pass Control System (Prelude 2.0L)
  • Tandem Control Valve System (Civic & CRX TBI)
  • Throttle Control System
  • Throttle Body (PFI)
  • Throttle Body (TBI)
• Computerized Engine Controls
  • Electronic Control Unit (Ecu)
• CEC Input Devices
  • Notes
  • A/C Switch Signal
  • Alternator (Fr) Signal
  • Atmospheric Pressure (Pa) Sensor
  • Automatic Transmission Shift Position Signal
  • Battery Voltage (IGN.1)
  • Brake Switch Signal (Civic & CRX)
  • Coolant Temperature (TW) Sensor
  • CYL Sensor (Prelude)
  • Electric Load Detector (Civic & CRX)
  • EGR Valve Lift Sensor (Except Civic & CRX 1.6L)
  • Intake Air Temperature (Ta) Sensor
  • Manifold Absolute Pressure (Map) Sensor
  • Oxygen (O2) Sensor
  • Power Steering Pressure Switch (Accord & Prelude)
  • Starter Signal
  • TDC/Crank Sensor (Civic, CRX 1.5L TBI & Prelude)
  • TDC/Crank/CYL Sensor (Accord, Civic 1.6L & CRX PFI)
  • Throttle Angle (Position) Sensor
  • Vehicle Speed Sensor/PULSER
• CEC Output Signals
  • Notes
  • A/C Clutch Engagement Delay
  • Check Engine Light & Led Indicator
  • Electronic Air Control Valve
  • Exhaust Gas RECIRCULATION Control Solenoid Valve
  • Fast Idle Control Solenoid Valve
  • IGNITOR Unit
  • Fuel Injector
  • Lock-Up Control Solenoid Valve
  • Main Relay
  • Purge Cut-Off Control Solenoid Valve
• Fuel System
  • Fuel Delivery
    • Fuel Injection
    • Fuel Pump
    • Injector Resistor(s) (PFI)
    • Main Relay
    • Fuel Pressure Regulator
  • Fuel Control
    • Programmed Fuel Injection (PGM-FI) ECU
    • Fuel Injector
  • Idle Speed
    • A/C Clutch Engagement Delay (Civic, CRX & Prelude)
    • Electronic Air Control Valve (EACV)
    • Fast Idle Valve (Accord & Prelude)
    • Fast Idle Control Solenoid Valve (Civic & CRX 1.6L PFI)
• Ignition System
  • Ignition Timing Control
    • Notes
    • Accord
    • Civic, CRX & Prelude
• Emission Systems
  • Exhaust Gas RECIRCULATION (EGR) System
    • Except Civic & CRX 1.6L
    • EGR Valve
    • EGR Control Solenoid Valve
    • Exhaust Gas Recirculation Valve Lift Sensor
  • Evaporative Emission System (EVAP)
    • Notes
    • Charcoal Canister
    • Fuel Tank Vapor Control System
    • Vapor Purge Control System
  • Positive Crankcase Ventilation (PCV) System
• Self-Diagnostic System
  • Check Engine Light & Led Indicator
• Miscellaneous Controls
  • Notes
  • A/C Clutch
  • Transmission
    • Lock-Up Control Solenoid Valve (A/T)