Engine Controls - System & Component Testing

• Introduction
• Air Induction System
  • Electronic Throttle Control
  • Idle Control System
  • Intake Manifold Change-Over Valve
  • Throttle Valve Control Module
• Computerized Engine Control
  • Data Transfer Between Engine Control Module And Can-Bus Capable Control Modules
  • Engine Control Module
    • Notes
    • A4 & S4
  • Engine Control Module Power Supply Relay
• Engine Sensors & Switches
  • Heated Oxygen Sensors
    • Notes
    • Bank 1 Heated Oxygen Sensor 1
    • Bank 1 Heated Oxygen Sensor 2
    • Bank 2 Heated Oxygen Sensor 1
    • Bank 2 Heated Oxygen Sensor 2
  • Engine Coolant Temperature Sensor
  • Engine Speed Sensor
  • Intake Air Temperature Sensor
  • Knock Sensor
  • Mass Air Flow Sensor
  • Throttle Position Sensor
  • Vehicle Speed Sensor
• Exhaust Emission Systems
  • Secondary Air Injection System
  • EVAP Emissions System
  • EVAP Leak Detection System
• Fuel System
  • Notes
  • Fuel Injector Test
    • Fuel Injector Electrical Testing
    • Fuel Injector Leak Test
    • Fuel Injector Resistance Test
    • Fuel Injector Quantity Test
  • Fuel Pressure Release
    • A4 & S4
  • Fuel Pressure Test
    • Notes
    • Fuel System Pressure
    • Fuel System Residual Pressure
  • Fuel Pump
    • Fuel Pump Activation (A4 & S4)
  • Fuel Pump Relay
• Ignition System
  • Spark Test
    • Notes
    • A4 (2.8L)
  • Camshaft Position Sensor
  • Ignition Coil(S)
• Misfire Recognition
  • 1.8L Turbo
  • 2.7L & 2.8L
  • 4.2L