Engine Controls - System/Component Tests - Gasoline

• Introduction
• Testing
• Air Induction Systems
  • Supercharger
    • Boost Pressure
• Computerized Engine Controls
  • Notes
  • Electronic Control Unit (AFC-DIGIFANT)
    • Notes
    • Ground Circuits
    • Power Circuits
  • Electronic Control Unit (Cis-E MOTRONIC)
    • Ground Circuits
    • Power Circuits
• Engine Sensors & Switches
  • Airflow Sensor (Cis-E - JETTA GLI, GTI 2.0L & PASSAT)
  • Airflow Sensor (DIGIFANT - CORRADO, Fox, Golf GL, GTI 1.8L & JETTA)
  • Airflow Sensor (VANAGON)
  • Coolant Temperature Sensor
  • Hall Effect Sender
  • Oxygen Sensor (Except VANAGON)
  • Oxygen Sensor (VANAGON)
  • Throttle Valve Switch (VANAGON)
• Relays
  • Fuel Pump Relay (Cabriolet, Golf GL, GTI, JETTA, JETTA GLI & PASSAT)
  • Fuel Pump Relay (CORRADO)
  • Fuel Pump Relay (Fox)
  • Fuel Pump Relay (VANAGON)
• Fuel System
  • Fuel Delivery
  • Fuel Control
    • Notes
    • Cold Start Valve (Except Vanagon)
    • Thermo Time Switch
  • Idle Control System
    • Idle Stabilization System
• Ignition System
  • Notes
  • Ignition Control Unit
    • Ignition Control Unit (Except Vanagon)
    • Ignition Control Unit (Vanagon)
    • Knock Sensor Control Unit (Except Vanagon)
    • Knock Sensor(s)
• Emission Systems & Sub-Systems
  • Exhaust Gas RECIRCULATION (EGR)
  • Fuel Evaporation
    • EVAP Canister By-Pass Valve (Except Vanagon)
    • EVAP Canister By-Pass Valve (Vanagon)
• Miscellaneous Controls
  • Notes
  • A/C Clutch