Engine Control System - Theory & Operation

• Introduction
• Air Induction System
  • Airflow Sensing
    • Mass Airflow Sensor
    • Speed Density
  • Multi-Ram System Diagnosis (CATERA 3.0L)
  • Supercharger (3.8L VIN 1)
• Computerized Engine Controls
  • Notes
  • Powertrain Control Module
    • Notes
    • Arithmetic Logic Unit
    • Central Processing Unit
    • Power Supply
    • Memories
  • Input Devices
    • Notes
    • A/C Request Signal
    • A/C Pressure Sensor
    • A/C Pressure Switches
    • A/C Temperature Sensors
    • Accelerator Pedal Position Sensor
    • Battery Voltage
    • Brake Switch Feedback
    • Camshaft Position Sensor (2.2L & 2.4L - Cavalier & Sunfire)
    • Camshaft Position Sensor (3.1L & 3.4L)
    • Camshaft Position Sensor (3.5L)
    • Camshaft Position Sensor (3.8L)
    • Camshaft Position Sensor (4.6L)
    • Camshaft Position Sensor (5.7L)
    • Crankshaft (7X) Sensor (2.2L & 2.4L)
    • Crankshaft (3X/7X) Sensor (3.1L)
    • Crankshaft (24X) Sensor (3.1L & 3.4L)
    • Crankshaft (3X/18X) Sensor (3.8L)
    • Crankshaft (4X/24X) Sensor (5.7L)
    • Crankshaft Position Sensor
    • Engine Coolant Temperature Sensor
    • Engine Coolant Level Switch
    • Engine Oil Level Switch
    • Engine Oil Pressure Sensor
    • Engine Oil Pressure Switch
    • Fuel Level Sensor
    • Fuel Pump Feedback
    • Fuel Tank Vapor Pressure Sensor
    • Gear Switches
    • Generator "L" Light Circuit
    • Generator "F" Field Circuit
    • Ignition/Crank Signal
    • Intake Air Temperature Sensor
    • Knock Sensor
    • Manifold Absolute Pressure Sensor
    • Mass Airflow Sensor
    • Oxygen Sensor
    • Park/Neutral Position Switch
    • Power Steering Pressure Switch
    • RPM Reference Signal
    • Throttle Position Sensor
    • Throttle Position Switch
    • Transmission Fluid Temperature Sensor
    • Transmission Range Switch
    • Vehicle Speed Sensor
  • Output Signals
    • Notes
    • A/C Compressor Clutch
    • Air Injection System
    • Boost Control Solenoid (Supercharger)
    • Canister Purge Control Solenoid
    • Coil-Near-Plug (CNP) Ignition
    • Computer Controlled Coil Ignition (C I)
    • Cooling Fan Relay
    • Digital EGR Valve
    • Direct Ignition System (DIS)
    • EGR Control Solenoid
    • Electronic Variable Orifice (EVO) Actuator
    • Fuel Injectors
    • Fuel Pump & Fuel Pump Relay
    • HOT Light Or Coolant Temperature (TEMP) Light
    • Idle Air Control (IAC) Valve
    • Integrated Direct Ignition (IDI)
    • Linear EGR Valve
    • Knock Sensor Operation
    • Malfunction Indicator Light (MIL)
    • Self-Diagnostics
    • Serial Data
    • Shift Light
    • Shift Solenoids (Electronically-Controlled Transmission)
    • Throttle Actuator
    • Torque Converter Clutch
• Fuel System
  • Fuel Delivery
    • Fuel Pump
    • Fuel Pump Relay
    • Fuel Pressure Regulator
  • Fuel Control
    • Notes
    • Open Loop
    • Closed Loop
    • Battery Voltage Correction
    • Fuel Cut-Off
    • Multiport Fuel Injection (MFI)
    • Sequential Fuel Injection (SFI)
  • Idle Speed
    • Notes
    • Idle Air Control Valve
• Ignition System
  • Description
  • Dis (3.0L)
  • Dis (3.5L)
  • Coil-Near-Plug Ignition
  • Computer Controlled Coil Ignition
    • Notes
    • Ignition Coil Pack
    • Camshaft & Dual (3X & 18X) Crankshaft Sensors
    • Fuel Control Signal
  • Direct Ignition System & Integrated Direct Ignition
  • Ignition Timing Systems
    • Notes
    • Ignition Timing Advance
    • Knock Sensor Operation
• Emission Systems
  • Notes
  • Air Injection System
    • Notes
    • Air Pump (Electric)
    • Check Valve
    • Electric Air Pump Relay
  • Catalytic Converter
    • Three-Way Catalytic Converter
  • Exhaust Gas RECIRCULATION
    • Notes
    • Digital EGR System
    • Linear EGR System
    • Negative Backpressure EGR Valve
  • Evaporative Emission Control
    • Notes
    • Carbon Canister
    • Canister Purge Control Solenoid
    • Canister Purge Control Valve
    • Tank Pressure Control Valve
  • Positive Crankcase Ventilation
    • Except 2.4L & 3.0L
    • 2.4L
    • 3.0L
• Self-Diagnostic System
  • Description
  • Malfunction Indicator Light
  • Serial Data
• Throttle Actuator Control System
  • Throttle Control
• Miscellaneous Controls
  • Notes
  • A/C Compressor Clutch
    • Notes
    • A/C Pressure Sensor
    • A/C Pressure Switches
  • Electric Cooling Fan
  • Electronic Variable Orifice Actuator (SATURN)
  • Hot Light Or Coolant Temperature Light
  • Transmission
    • Torque Converter Clutch (Non-Electronic Transmission)
    • Torque Converter Clutch (Electronic Transmission)
    • Electronic Transmission
    • Shift Light (Except Corvette)
    • 1-To-4 Light (Corvette)
    • 2nd & 3rd Gear Block-Out Relay (Camaro, Corvette & Firebird)