Engine Controls - System/Component Tests - 4-CYL

• Introduction
• Testing Information
• Computerized Engine Controls
  • Engine Control Module
    • Power & Ground Circuits
• Engine Sensors & Switches
  • Air/Fuel (A/F) Sensor
    • Camry & RAV4 Calif. Emission Vehicles
  • Airflow Meter
    • Notes
    • Tacoma, T100 & 4Runner
  • BRAKELIGHT Switch
    • Camry, Corolla, Tacoma, T100 & 4Runner
    • Celica & RAV4
    • Tercel
  • Camshaft Position Sensor
    • Camry, Corolla, RAV4, Tacoma, Tercel, T100 & 4Runner
    • Celica
  • Crankshaft Position Sensor
    • Camry, Corolla, RAV4, Tacoma, Tercel, T100 & 4Runner
    • Celica
  • EGR Gas Temperature Sensor
    • Tacoma, T100 & 4Runner
  • Engine Coolant Temperature (ECT) Sensor
  • Heated Oxygen Sensor
  • Intake Air Temperature Sensor
    • Camry, Celica, Corolla, RAV4 & Tercel
  • Knock Sensor
  • Manifold Absolute Pressure (Map) Sensor
    • Camry, Celica, Corolla, RAV4 & Tercel
  • Oxygen Sensor
    • Camry Calif. Emission Vehicles
    • Camry Except Calif. Emission Vehicles
    • Celica
    • Corolla
    • RAV4 Calif. Emission Vehicles
    • RAV4 Except Calif. Emission Vehicles
    • Tacoma, T100 & 4Runner
    • Tercel
  • Park/Neutral Position (PNP) Switch
    • A/T Models
  • Pick-Up Coils
    • Celica
  • Power Steering Pressure Switch
    • Camry & Corolla
  • Throttle Position Sensor
    • Camry & Celica
    • Corolla
    • RAV4
    • Tacoma, T100 & 4Runner
    • Tercel
  • TP Sensor Resistance Specifications
  • Vapor Pressure Sensor
    • Camry, Celica Calif. Emission Vehicles, Corolla, RAV4, Tacoma, Tercel, T100 & 4Runner
  • Vehicle Speed Sensor
    • Camry, Celica, Corolla & RAV4
    • Tacoma 2.4L 2RZ-FE
    • Tacoma 2.7L 3RZ-FE & 4Runner
    • Tercel & T100
  • 4WD Switch
    • Tacoma, T100 & 4Runner
• Relays
  • Circuit Opening Relay
  • EFI Main Relay
• Fuel System
  • Fuel Delivery
    • Circuit Opening Relay
    • EFI Main Relay
    • Fuel Pump Pressure
    • Fuel Pump Resistance & Operation
  • Fuel Control
    • Fuel Injectors (Camry, RAV4 & Tercel)
    • Fuel Injectors (Celica, Tacoma, T100 & 4Runner)
    • Fuel Injectors (Corolla)
    • Fuel Cut System
• Idle Control System
  • Idle Air Control (IAC) Valve
    • Camry, Celica, RAV4, Tacoma, T100 & 4Runner
    • Corolla & Tercel
• Ignition System
  • * Please Read First *
  • Timing Control Systems
    • Knock Sensor
• Emission Systems & Sub-Systems
  • Exhaust Gas RECIRCULATION (EGR) System Test
    • Notes
    • Camry, Celica & RAV4
    • Tacoma, T100 & 4Runner
  • EGR Check Valve
    • Tacoma With A/T, T100 With A/T & 4Runner With A/T
  • EGR Gas Temperature Sensor
    • Tacoma, T100 & 4Runner
  • EGR Vacuum Modulator
    • Notes
    • Camry, Celica, RAV4, Tacoma, T100 & 4Runner
  • EGR Vacuum Switching Valve (VSV)
    • Camry, Celica & RAV4
    • Tacoma, T100 & 4Runner
  • EGR Valve
    • Camry, Celica, RAV4, Tacoma, T100 & 4Runner
  • Fuel Evaporation System
    • Notes
    • Charcoal Canister (Camry)
    • Charcoal Canister (Celica Except Calif. Emission Vehicles)
    • Charcoal Canister (Celica Calif. Emission Vehicles)
    • Charcoal Canister (Corolla)
    • Charcoal Canister (RAV4)
    • Charcoal Canister (Tacoma & 4Runner)
    • Charcoal Canister (Tercel)
    • Charcoal Canister (T100)
    • Cut-Off Valve (Camry & Corolla)
    • EVAP Check Valve (Celica Except Calif. Emission Vehicles)
    • EVAP Thermal Vacuum Valve (Celica Except Calif. Emission Vehicles)
    • EVAP Vacuum Switching Valve (Camry, Celica Calif. Emission Vehicles, Corolla, RAV4, Tacoma, Tercel, T100 & 4Runner)
    • Overfill Check Valve (Camry & Corolla)
    • Overfill Check Valve (Celica Calif. Emission Vehicles)
    • Vapor Pressure Sensor (Camry, Celica Calif. Emission Vehicles, Corolla, RAV4, Tacoma, Tercel, T100 & 4Runner)
    • Vapor Pressure Sensor Vacuum Switching Valve (Camry, Celica Calif. Emission Vehicles, Corolla, RAV4, Tacoma, Tercel, T100 & 4Runner)
  • On-Board Refilling Vapor Recovery (ORVR) System
    • Notes
    • Charcoal Canister (Camry)
    • Charcoal Canister (Corolla)
    • EVAP Vacuum Switching Valve (Camry & Corolla)
    • Vapor Pressure Sensor (Camry & Corolla)
    • Vapor Pressure Sensor Vacuum Switching Valve (Camry & Corolla)
  • Positive Crankcase Ventilation (PCV)
• Throttle Controls
  • Throttle Opener
    • Camry, Celica & RAV4
    • Tacoma, T100 & 4Runner