Engine Controls - Theory & Operation

• Introduction
• Computerized Engine Controls
  • XJS & XJ6
  • Electronic Control Unit (Ecu)
• Input Devices
  • Notes
  • Airflow Meter (XJ6)
  • Air Temperature Sensor (ATS) (XJS)
  • Coolant Temperature Sensor (Cts)
  • Crankshaft Sensors (XJS)
  • Crankshaft Sensor (XJ6)
  • Manifold Pressure Sensor (XJS)
  • Oxygen (O2) Sensor
  • Throttle Potentiometer
  • Throttle Position Switch (TPS) (XJS)
  • Vacuum Switch (Full Load) (XJS)
• Output Signals
  • Notes
  • Auxiliary Air Valve (XJS)
  • Idle Speed Control Valve (ISCV) (XJ6)
  • Check Engine Light
  • Supplementary Air Valve (XJS)
• Fuel System
  • Fuel Delivery (XJS)
    • XJS
  • Fuel Delivery (XJ6)
    • XJ6
  • Fuel Control (XJS)
    • XJS
  • Fuel Control (XJ6)
    • XJ6
• Idle Speed
  • Auxiliary Air Valve (XJS)
  • Idle Speed Control Valve (XJ6)
  • Supplementary Air Valve (XJS)
• Ignition System (XJS)
  • XJS
• Ignition System (XJ6)
  • XJ6
• Emission Systems
  • Air Injection System (XJS)
  • Air Injection System (XJ6)
• Exhaust Gas RECIRCULATION (EGR)
• Fuel Evaporation (XJS)
  • XJS
• Fuel Evaporation (XJ6)
  • XJ6
• Positive Crankcase Ventilation (XJS)
  • XJS
• Positive Crankcase Ventilation (XJ6)
  • XJ6
• Self-Diagnostic System
  • Check Engine Light
    • XJS
    • XJ6