Engine Controls - System & Component Testing - G20 & Q45

• Introduction
• Air Induction Systems
  • Variable Induction Air Control System (Q45)
    • Description
    • Diagnostic Procedure
• Computerized Engine Controls
  • Engine Control Module (ECM)
    • Power & Ground Circuits (G20)
    • Power & Ground Circuits (Q45)
• Engine Sensors & Switches
  • Notes
  • Absolute Pressure Sensor
  • Accelerator Pedal Position Sensor (Q45)
  • Crankshaft Position Sensor
  • Camshaft Position Sensor
  • Engine Coolant Temperature Sensor
  • EGR Temperature Sensor
  • Fuel Level Sensor
  • Fuel Tank Temperature Sensor
  • Heated Oxygen Sensor
  • Ignition Switch (Start Signal)
    • G20
    • Q45
  • Intake Air Temperature Sensor
  • Intake Valve Timing Control Position Sensor (Q45)
  • Knock Sensor
  • Mass Airflow Sensor
  • Park/Neutral Position Switch
  • Power Steering Pressure Switch (G20)
  • Power Steering Pressure Switch System Test (G20)
  • Radiator Coolant Temperature Sensor (Q45)
  • Throttle Position Sensor
  • Vehicle Speed Sensor
• Relays & Solenoids
  • Relays
    • ECM Relay
    • Fuel Pump Relays
    • Throttle Control Motor Relay (Q45 Only)
  • Solenoids
    • Notes
    • Cooling Fan Speed Control Solenoid Valve (Q45 Only)
• Fuel System
  • Fuel Pressure Release
  • Fuel Delivery
    • Notes
    • Fuel Pump Control System (G20)
    • Fuel Pump Control System (Q45)
    • Fuel Pump Control Module - Q45
    • Fuel Pump Relay
  • Fuel Control
    • Fuel Injector
    • Fuel Injector Circuits (G20)
    • Fuel Injector Circuits (Q45)
• Idle Control System
  • Notes
  • Idle Air Control Valve-Auxiliary Air Control Valve (G20)
• Ignition System
  • Notes
  • Ignition Signal (G20)
    • Description
    • Testing
  • DISTRIBUTORLESS Ignition System
    • Ignition Coil & Power Transistor (Q45)
• Emission Systems & Sub-Systems
  • PCV Valve
  • Exhaust Gas RECIRCULATION (G20)
    • EGR System Check
    • EGR Temperature Sensor
    • EGR Volume Control Valve
  • Fuel Evaporative System
    • Notes
    • EVAP System Leak Test
    • EVAP Canister Test
  • On Board Refueling Vapor Recovery System
    • Description
    • Refueling Control Valve Test
    • Refueling EVAP Vapor Cut Valve Test
    • Strong Fuel Odor From EVAP Canister
    • Cannot Refuel/Fuel Odor From Fuel Filler While Refueling
  • Positive Crankcase Ventilation
• Intake Valve Timing Control System (Q45)
  • Intake Valve Timing Control Solenoid Valve
  • Intake Valve Timing Control Position Sensor
• Miscellaneous Controls
  • Notes
  • A/C Clutch Relay
  • Electrical Load Signal
    • G20
    • Q45
  • Refrigerant Pressure Sensor
    • Description
    • Diagnostic Procedure (G20)
    • Diagnostic Procedure (Q45)
• Component Locations