Engine Controls - System/Component Tests

• Introduction
• Air Induction Systems (Turbo)
  • Preliminary Checks
  • Boost Pressure
  • Charge Air OVERPRESSURE Switch
• Electronic Control Unit (Ignition)
  • Notes
  • Preliminary Checks (240, 240 DL, 740 GL, 740 GLE & 760 GLE)
  • Power Circuit Checks
  • Ground Circuit Checks
  • Preliminary (740 Turbo & 760 Turbo)
• Electronic Control Unit (Fuel)
  • Notes
  • Preliminary Checks (240, 240 DL, 740 GL & 740 GLE)
  • Power Circuit Checks
  • Ground Circuit Checks
  • Preliminary Checks (760 GLE, 740 Turbo & 760 Turbo)
• Engine Sensors & Switches
  • Notes
  • Air Temperature Sensor
  • Coolant Temperature Sensor
  • Hall Effect Sensor (740 Turbo & 760 Turbo)
  • Manifold Absolute Pressure Sensor (740 GL With REGINA EFI)
  • Oxygen (O2) Sensor
  • Throttle Switch
• Relays
  • Fuel Pump Relay
• Fuel Delivery
• Fuel Pressure Regulator
• Fuel Control
  • Air Temperature Sensor (740 GL REGINA EFI)
  • Fuel Injectors
  • Cold Start Valve
  • Mass Airflow Meter (240 & DL, 740 GL BOSCH EFI & 740 GLE)
  • Mass Airflow Meter (760 GLE)
  • Mass Airflow Meter (740 Turbo & 760 Turbo)
  • Oxygen (O2) Sensor
  • Oxygen (O2) Sensor Current Feed & Heater Resistance
• Idle Control System
  • Notes
  • Idle Air Control Valve
• Timing Control Systems
  • Notes
  • Detonation (Knock) Sensor (All Models Except 760 GLE)
  • Detonation (Knock) Sensor (760 GLE)
• Emission Systems
  • Exhaust Gas RECIRCULATION (EGR)
    • 740 Turbo & 760 Turbo
  • Fuel Evaporation
  • Thermostatic Air Cleaner
    • 740 GLE