Engine Controls - System/Component Tests - EFI

• Introduction
• Sensors & Switches
  • Airflow Meter & Sensor Test
  • Coolant Temperature Sensor Test
  • Coolant Temperature Switch (3VZ-E) Test
  • EGR Gas Temperature Sensor Test
  • Knock Sensor Test
  • Neutral/Start Switch Test
  • Oxygen Sensor Feedback Voltage Test
  • Sub-Oxygen Sensor Test
  • Oxygen Sensor Heater Test
  • Throttle Position (TP) Sensor Test
  • Vehicle Speed Sensor (Analog Type) Test
  • 4WD Switch Test
• Modules, Motors, Relays & Solenoids
  • Circuit Opening Relay
  • EFI Main Relay Test
• Fuel Systems
  • Fuel Delivery Test
  • Fuel Injectors Test
  • Fuel Pressure-Up System Test
  • Deceleration Fuel-Cut System Test
  • Cold Start Injector Test
  • Cold Start Injector Time Switch Test
• Idle Control System
  • Auxiliary Air Valve System
    • With 22R-E
• Ignition System
  • Notes
  • Diagnostic Code
    • Code 12 (No RPM Signal)
    • Code 13 (No RPM Signal)
    • Code 14 (Ignition Signal Problem)
  • Spark Test
  • Ignition Coil Resistance Tests
    • Primary Coil Resistance
    • Secondary Coil Resistance
  • Pick-Up Coil Resistance Tests
    • With 22R-E
    • With 3VZ-E
  • Pick-Up Coil Air Gap Check
• Emission Systems & Sub-Systems
  • Air Suction System Tests
    • (22R-E)
    • (3VZ-E)
    • Air Suction (Reed) Valve (3VZ-E)
    • Vacuum Switching Valve (VSV)
    • Vacuum Check Valve
  • Dashpot Control System
  • Exhaust Gas RECIRCULATION
    • System Test
    • EGR Vacuum Modulator
    • Bi-Metallic Vacuum Switching Valve (BVSV) 22R-E
    • Vacuum Switching Valve (VSV) 3VZ-E
    • Vacuum Switching Valve (VSV) Pickup (22R-E, California)
  • Fuel Evaporation Tests
    • Fuel Odor Or Gas Leaks
    • Fuel Tank Or Expansion Tank Deformed
    • Rough Engine Operation
    • Bi-Metallic Vacuum Switching Valve (BVSV)