Engine Controls - System & Component Testing - CNG

• Introduction
• Service Precautions
• Computerized Engine Controls
  • Powertrain Control Module
    • Power & Ground Circuits
• Sensors & Switches
  • Ambient/Battery Temperature Sensor
  • Camshaft Position Sensor
  • Crankshaft Position Sensor
  • Engine Coolant Temperature Sensor
  • Fuel Temperature Sensor
  • Heated Oxygen Sensor
  • Intake Air Temperature Sensor
  • Low Fuel Pressure Sensor
  • Manifold Absolute Pressure Sensor
  • Park/Neutral Switch
  • Speed Control Switch
  • Throttle Position Sensor
  • Vehicle Speed Sensor
• Motors, Relays & Solenoids
  • A/C Clutch Relay
  • Auto Shutdown Relay
  • High Pressure Shutoff Solenoid
  • Idle Air Control Motor
  • Low Pressure Shutoff Solenoid
  • Speed Control Relay
  • Speed Control Solenoid
  • Torque Converter Clutch Relay
• Fuel Systems
  • Notes
  • Fuel System Pressure Release
    • Notes
    • Fuel Tube Purging With Engine Able To Run
    • Fuel Tube Purging With Engine Unable To Run
    • Fuel Cylinder Purging With Engine Able To Run
    • Fuel Cylinder Purging With Engine Unable To Run
  • Fuel Delivery
    • Notes
    • Fuel Cylinder
    • Fuel Delivery
  • Fuel Control
    • Notes
    • Fuel Injectors
    • Fuel Temperature Sensor
    • High Pressure Shutoff Solenoid
    • Low Fuel Pressure Sensor
    • Low Pressure Shutoff Solenoid
• Idle Control Systems
  • Idle Air Control Motor
  • Minimum Idle Airflow
• Ignition Systems
• Emission Systems & Sub-Systems
  • Notes
  • Positive Crankcase Ventilation
    • PCV Valve
• DRIVEABILITY Problems
  • Start & Stall Condition
• Miscellaneous Controls
  • Notes
  • A/C Clutch Relay
  • Speed Control Relay
  • Speed Control Solenoid
  • Torque Converter Clutch Relay
• Wiring Diagrams
  • Ram Van B2500
  • Ram Van B3500