Engine Controls - System/Component Tests

• Introduction
• Air Induction Systems
  • Turbocharger Trouble Shooting
    • High Boost Pressure
    • Low Boost Pressure
    • Oil Leaks
  • Turbocharger Component Testing
    • Notes
    • Boost Pressure
    • Wastegate Valve
    • End Play & Side Play
• Computerized Engine Controls
  • Electronic Control Unit (Ecu)
    • Connector & Terminal Identification
    • Ground Circuits
    • Power Circuits (Ignition Off)
    • Power Circuits (Ignition On)
    • Power Circuits (Cranking)
• Engine Sensors & Switches
  • A/C Switch
  • Mass Airflow Sensor (IMPREZA)
  • Mass Airflow (MAF) Sensor (Except IMPREZA)
  • Barometric Pressure (BARO) Sensor (JUSTY & Legacy)
  • Clutch Switch (JUSTY)
  • Engine Coolant Temperature (ECT) Sensor
  • Crankshaft Position (CKP) Sensor
  • EGR Temperature Sensor (LOYALE CALIF.)
  • Electrical Load Sensors (JUSTY)
  • Oxygen (O2) Sensor
  • P/N Switch (Except JUSTY)
  • Throttle Position Sensor (Or Switch)
  • Pressure Sensor
  • Vehicle Speed Sensor (VSS)
• Relays & Solenoids
  • Fuel Injection
    • EGR Solenoid
    • Fuel Injector(s)
    • Kickdown Relay Control (TBI)
    • Fuel Pump Relay
    • Main Relay
    • Purge Control Solenoid Valve
• Fuel System
  • Fuel Delivery
  • Fuel Control
    • Feedback System
• Idle Control System
  • System Inspection
  • Auxiliary Air Valve (JUSTY)
  • By-Pass Air Control Valve (LOYALE)
  • By-Pass Air Control Valve (Legacy & SVX)
  • Dashpot (JUSTY PFI)
  • Fast Idle & Idle-Up Control Device (JUSTY)
• Ignition System
  • Notes
  • Timing Control Systems
    • Electronic Advance
    • Knock Sensor (Legacy & Loyale)
• Emission Systems & Sub-Systems
  • Pulsed Secondary Air Injection (JUSTY)
    • Suction Valve
  • Exhaust Gas RECIRCULATION (EGR)
    • EGR System (Impreza)
    • EGR System (Loyale & SVX)
    • EGR Valve
  • Fuel Evaporative System (EVAP)
    • Notes
    • System Test
    • Charcoal Canister
    • 2-Way Valve
    • Purge Control Solenoid Valve
  • High Altitude COMPENSATOR
    • Barometric Pressure (BARO) Sensor (Justy & Legacy)
  • Positive Crankcase Ventilation (PCV)