Engine Controls - System/Component Tests - 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
  • Park/Neutral Switch
  • Throttle Valve Switch
  • Vehicle Speed Sensor (VSS)
• Modules, Motors, Relays & Solenoids
  • Notes
  • Modules
    • Electronic Spark Control Module
  • Motors
    • IAC Motor
  • Relays
    • A/C Compressor Relay
    • ECM Relay
    • Main Relay
    • Restart Relay
    • Starter Relay
  • Solenoids
    • Air Regulator Solenoid
• Fuel System
  • Fuel Delivery
    • Notes
    • Pressure Regulator
    • Pressure Regulator Vacuum Switching Valve (VSV)
    • Fuel Pump Relay
  • Fuel Control
    • Notes
    • Fuel-Cut (Slow-Cut) System
    • Fuel Injectors
    • Fuel Injector Balance Test
• Idle Control System
  • A/C Switch
  • Air Regulator Solenoid
  • Exhaust Gas RECIRCULATION (EGR)
    • Backpressure Transducer (BPT)
    • Duty Solenoid
    • EGR System
    • EGR System (California)
    • EGR Vacuum Switching Valve (VSV) (CALIFORNIA)
    • EGR Valve
    • Thermal Vacuum Valve (TVV) (Federal)
  • Evaporative Emission System (EVAP)
    • Notes
    • Canister Purge Vacuum Switching Valve (VSV)
    • Canister Purge Control Valve
  • Positive Crankcase Ventilation (PCV)
    • PCV Valve
• Miscellaneous Controls
  • Notes
  • Starter Relays
    • Starter Relay