Engine Controls - System & Component Testing

• Introduction
• Component Locations
  • Notes
  • Component Locations (Forester 2.5L)
  • Component Locations (Impreza 2.5L & Outback Sport)
  • Component Locations (Impreza WRX 2.0L)
  • Component Locations (Legacy & Outback 2.5L)
  • Component Locations (Outback 3.0L)
• Air Induction Systems
  • Turbocharger (IMPREZA WRX 2.0L)
    • Air Bypass Valve
    • Intercooler
    • Tumble Generator Valve Assembly
    • Wastegate
    • Wastegate Solenoid
• Computerized Engine Controls
  • Electronic Control Module (ECM)
    • Connector & Terminal Identification
    • Ground Circuits
    • Power Circuits (Ignition Off)
    • Power Circuits (Ignition On)
    • Power Circuits (Cranking)
• Sensors & Switches
  • A/C Switch
  • Camshaft Position (CMP) Sensor
  • Crankshaft Position (CKP) Sensor
  • Engine Coolant Temperature (ECT) Sensor
  • Fuel Level Sensor
  • Fuel Temperature Sensor
  • Intake Manifold Pressure Sensor
  • Intake Air Temperature (IAT) Sensor
  • Knock Sensor (KS)
  • Heated Oxygen Sensor (Ho2S)
  • Neutral Position (NP) Switch
  • Pressure Sensor
  • Throttle Position (TP) Sensor
  • Vehicle Speed Sensor (VSS)
• Relays & Solenoids
  • Relays
    • Cooling Fan Relay
    • Fuel Pump Relay
    • Main Relay
  • Solenoids
    • EGR Solenoid Valve
    • Idle Air Control Solenoid Valve
    • Purge Control Solenoid Valve
    • Wastegate Solenoid (Impreza WRX 2.0L)
• Fuel Systems
  • Fuel Delivery
  • Fuel Control
    • Feedback System
    • Fuel Injector(s)
• Ignition Systems
  • Notes
  • Timing Control Systems
    • Knock Sensor
• Emission Systems & Sub-Systems
  • Fuel Evaporative System (EVAP)
    • Notes
    • System Test
    • Charcoal Canister
    • EVAP Fuel Tank Pressure Control Solenoid
    • Purge Control Solenoid Valve
  • Positive Crankcase Ventilation (PCV)