Engine Controls - Basic Diagnostic Procedures

• Model Identification
• Introduction
• Preliminary Inspection & Adjustments
  • Visual Inspection
  • Mechanical Inspection
    • Compression
    • Exhaust System Backpressure
• Fuel System
  • Notes
  • Fuel Pressure Release
  • Fuel Pressure Test
    • Fuel Pressure Test
    • Fuel Pressure Regulator
    • Residual Fuel Pressure
  • Fuel Pump
    • Power Supply Checking
  • Fuel Volume Check
    • Fuel Pump Feed Rate
    • Fuel Pump Check Valve
• Ignition Checks
  • Spark Test
  • Camshaft Position Sensor (Pick-Up Coil)
  • Crankshaft Position Sensor
  • Ignition Coils
    • Voltage Supply For Ignition Coils N128, N158, N163 & N164
  • Power Output Stage
    • Control Of Power Output Stages For N122 & N127
• Idle Speed & Ignition Timing
• Modules, Motors, Relays & Solenoids
  • Fuel Pump Relay
  • Fuel Pump Control Signal
• Wiring Diagrams