Engine Controls - Basic Diagnostic Procedures

• Introduction
• Preliminary Inspection & Adjustments
  • Visual Inspection
  • Mechanical Inspection
    • Compression
    • Intake Manifold Vacuum - Forester, Legacy & Outback 2.5L
• Fuel Systems
  • Notes
  • Fuel Pump Operation
    • Notes
    • Checking Fuel Pump Operation Using Scan Tool
    • Checking Fuel Pump Operation By Applying Battery Voltage To Fuel Pump
  • Fuel System Pressure Release
  • Fuel Pressure
  • Fuel Pump Control Circuit
    • Notes
    • Fuel Pump Relay
    • Main Relay
• Ignition Systems
  • Spark Test
    • Notes
    • 2.2L & 2.5L
    • 3.0L
  • Camshaft Position Sensor Resistance
    • 2.2L & 2.5L
    • 3.0L
  • Crankshaft Position Sensor Resistance
    • 2.2L & 2.5L
    • 3.0L
  • Ignition Coil Resistance
    • Notes
    • 2.2L & 2.5L
• Idle Speed & Ignition Timing
• Summary