Engine Controls - System/Component Tests - 3.4L

• Introduction
• Computerized Engine Controls
  • Engine Control Module
    • Power & Ground Circuits
• Engine Sensors & Switches
  • Airflow Meter
  • Camshaft Position Sensor
  • Crankshaft Position Sensor
  • EGR Gas Temperature Sensor
    • 2WD 1/2 Ton
  • Engine Coolant Temperature (ECT) Sensor
  • Knock Sensor
  • Park/Neutral Position (PNP) Switch Circuit
  • Park/Neutral Position (PNP) Switch
    • A/T Models
  • Oxygen Sensor Feedback Voltage Test
  • Oxygen Sensor Heater
  • Pick-Up Coils
  • Throttle Position Sensor
  • Vehicle Speed Sensor
  • 4WD Switch
• Control Units
  • Fuel Pump Electronic Control Unit
• Relays
  • Circuit Opening Relay
  • EFI Main Relay
• Fuel System
  • Fuel Delivery
    • Circuit Opening Relay
    • EFI Main Relay
    • Fuel Pump Pressure
    • Fuel Pump Resistance & Operation
  • Fuel Control
    • Fuel Injectors
    • Fuel Pressure Control System
    • Fuel Cut System
• Idle Control System
  • A/C Idle-Up Valve
  • Idle Air Control (IAC) Valve
• Ignition System
  • Notes
  • Timing Control Systems
    • Knock Sensor
• Emission Systems & Sub-Systems
  • Exhaust Gas RECIRCULATION (EGR) System Test
    • Notes
    • 2WD 1/2 Ton (Only)
  • EGR Vacuum Modulator
  • EGR Vacuum Switching Valve (VSV)
    • Notes
    • 2WD 1/2 Ton (Only)
  • Fuel Evaporation System
    • Notes
    • Charcoal Canister
    • EVAP Vacuum Switching Valve
  • Positive Crankcase Ventilation (PCV)
• Throttle Controls
  • Dashpot Control System
    • M/T
  • Throttle Opener