Engine Controls - System & Component Testing

• Introduction
• Air Induction Systems
  • Acoustic Control Induction System (ACIS) - GS300 & Is300
    • Intake Air Control Valve
    • ACIS Vacuum Tank
    • ACIS Vacuum Switching Valve
  • Acoustic Control Induction System (ACIS) - GS430 & LS430
    • Intake Air Control Valve
    • ACIS Vacuum Tank
    • ACIS Vacuum Switching Valve
• Computerized Engine Controls
  • ECM Back-Up Power Circuit (Battery)
  • ECM Power Source Circuit (Ignition Keyed)
    • Notes
    • Circuit Description
    • GS300
    • Is300
    • GS430
    • LS430
  • Starter Signal Circuit
    • Notes
    • Circuit Description
    • Diagnosis & Repair (Using Lexus Scan Tool)
    • Diagnosis & Repair (Using OBD-II Scan Tool)
• Engine Sensors & Switches
  • Accelerator Pedal Position Sensor
    • GS300 & Is300
    • GS430 & LS430
  • Camshaft Position Sensor
  • Crankshaft Position Sensor
  • Engine Coolant Temperature (ECT) Sensor
  • Heated Oxygen Sensor Heater Resistance
  • Heated Oxygen Sensor Operation
  • Intake Air Temperature (IAT) Sensor
    • IAT Sensor Resistance
  • Knock Sensor
  • Mass Airflow (MAF) Sensor
    • MAF Sensor Resistance
    • MAF Sensor Voltage
  • Park/Neutral Position (PNP) Switch
  • Park/Neutral Position (PNP) Switch Circuit
  • Throttle Position (TP) Sensor
    • GS300 & Is300
    • GS430 & LS430
  • Vapor Pressure Sensor
  • Variable Valve Timing Sensor
    • Notes
    • GS430 & LS430
  • Vehicle Speed Sensor (VSS)
• Motors, Relays & Solenoids
  • Motors
    • Throttle Control Motor (GS300 & IS300)
    • Throttle Control Motor (LS430 & GS430)
  • Relays
    • Notes
    • Testing EFI Main, Starter & Circuit Opening Relays
    • Testing Fuel Pump Relay (IS300 & LS430)
  • Solenoids
    • ACIS Vacuum Switching Valve (VSV)
    • EVAP Vacuum Switching Valve
    • Fuel Injectors
    • Canister Closed Valve Vacuum Switching Valve
    • Pressure Switching Valve Vacuum Switching Valve
• Fuel System
  • Fuel Delivery
    • Notes
    • Fuel Pump Operation (Using Battery Voltage)
    • Fuel Pump Resistance
    • Fuel Pump Control Circuit (GS300 & GS430)
    • Fuel Pump Control Circuit - IS300 & LS430 (Using Lexus Scan Tool)
    • Fuel Pump Control Circuit - IS300 & LS430 (Using OBD-II Scan Tool)
    • Fuel Pump Pressure (All Models)
    • Fuel Pressure Regulator (All Models)
  • Fuel Control
    • Fuel Injector Circuit
    • Fuel Injector Operation
    • Fuel Injector Resistance
    • Fuel Injector Volume
  • Fuel Pump Resistor
    • Is300 & LS430
  • Fuel Cut System Operation
    • GS300 & Is300
    • GS430 & LS430
• Ignition System
• Emission Systems & Sub-Systems
  • Notes
  • Fuel Evaporation System
    • Notes
    • Fuel EVAP System Test
    • Charcoal Canister
    • EVAP Vacuum Switching Valve
    • Vapor Pressure Sensor Circuit
    • Pressure Switching Valve Vacuum Switching Valve (GS300 & GS430)
    • Pressure Switching Valve Vacuum Switching Valve (LS430 & IS300)
    • Canister Closed Valve Vacuum Switching Valve
  • Positive Crankcase Ventilation (PCV)
    • PCV Valve
• Variable Valve Timing (VVT) System
  • Variable Valve Timing (VVT) System Operation
  • Camshaft Timing Oil Control Valve
    • Notes
    • Resistance Check (GS300 & IS300)
    • Resistance Check (GS430 & LS430)
    • Oil Control Valve Operation (GS300 & IS300)
    • Oil Control Valve Operation (GS430 & LS430)
  • Variable Valve Timing (VVT) Sensor
• Throttle Controls
  • Throttle Body
    • Notes
    • Throttle System Operation (GS300 & IS300)
    • Throttle System Operation (GS430 & LS430)
• Miscellaneous Controls
  • Notes
  • Cooling Fan System
  • Transmission