DFI System Theory/Operation

• Organization
• Description
• Operation
  • System Overview
  • Fuel Delivery Operation
  • Air Induction Operation
  • Data Sensors Operation
    • Notes
    • Manifold Air Temperature Sensor (MAT)
    • Coolant Temperature Sensor (CTS)
    • Manifold Absolute Pressure (MAP) Sensor
    • Throttle Position Sensor (TPS)
    • Vehicle Speed Sensor (VSS)
    • Oxygen (O2) Sensor
    • Engine Speed Sensor
  • Electronic Control Module (ECM) Operation
    • Notes
    • Input/Output Devices
    • Central Processing Unit (CPU)
    • Power Supply
    • Memories
  • Body Control Module (BCM) Operation
  • Electronic Spark Timing (Est) Operation
  • Idle Speed Control (ISC) Operation
  • Emission Controls Operation
  • Closed Loop Fuel Control Operation
  • Cruise Control Operation
  • Catalytic Converter Operation
  • Diagnostic System Operation
    • Notes
    • Engine Malfunction Test
    • Switch Test
    • Engine Data Displays
    • Output Cycling Test