Engine Controls - System/Component Tests - 3.1L EFI

• Introduction
• Computerized Engine Controls
  • Control Unit
    • Ground Circuits
    • Power Circuits (Constant Voltage)
    • Power Circuits (Ignition Voltage)
• Engine Sensors & Switches
  • A/C Switch
  • Airflow Sensor
  • Coolant Temperature Sensor
  • Crankshaft Position Sensor
  • Crank Signal
  • Chart C-1B - Checking Crank Signal Pickup 3.1L
  • Knock Sensor
  • Manifold Absolute Pressure (Map) Sensor
  • Chart C-1D - Map Sensor Output
  • Manifold Air Temperature (Mat) Sensor
  • Oxygen (O2) Sensor
  • Throttle Position Sensor (TPS)
  • Transmission Temperature Sensor
  • Vehicle Speed Sensor (VSS)
    • Notes
    • Pressure Regulator
    • Pressure Regulator Vacuum Switching Valve (VSV)
    • Fuel Pump Relay
  • Fuel Control
    • Notes
    • Fuel Injectors
    • Fuel Injector Balance Test
• Idle Control System
  • A/C Switch
  • Idle Air Control Valve
  • Chart C-2C - Idle Air Control Valve 3.1L Pickup
    • Notes
    • Diagnostic Aids
• Ignition System
  • Notes
  • Timing Control Systems
    • Notes
    • Electronic Spark Timing (EST)
    • Electronic Spark Control (ESC)
  • Chart C-5 - ESC System Pickup 3.1L
    • Notes
    • Diagnostic Aids
• Emission Systems & Sub-Systems
  • Exhaust Gas RECIRCULATION (EGR)
    • EGR System
  • Chart C-7 - EGR System Pickup 3.1L
    • Notes
    • In-Tank Pressure Control Valve
    • Thermostatic Vacuum Switch (TVS)
  • Positive Crankcase Ventilation (PCV)
    • PCV Valve
  • Thermostatic Air Cleaner (TAC)
    • Notes
    • Vacuum Motor Check
    • Temperature Sensor Check
• Miscellaneous Controls
  • Notes
  • A/C Clutch Control
  • Chart C-10 - A/C Clutch Control Diagnosis Pickup 3.1L
  • Starter Relay