Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
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HOMESERVICE MANUALSTOYOTA20004RUNNER BASE, RWD, STANDARDREPAIR AND DIAGNOSISENGINE PERFORMANCESYSTEMENGINE CONTROLS - SYSTEM & COMPONENT TESTING - 4-CYLINDER
2000 Toyota 4Runner Base, RWD, Standard
Engine Controls - System & Component Testing - 4-Cylinder
2000 Toyota 4Runner Base, RWD, StandardSECTION Engine Controls - System & Component Testing - 4-Cylinder
- Introduction
- Air Induction Systems
- Computerized Engine Controls
- A/C Compressor Lock Sensor Circuit
- A/C-Cut Control System Circuit
- A/C Evaporator Temperature Sensor Circuit
- Engine Control Module (ECM) Power Source Circuit
- Fuel Injector Circuit
- Fuel Pump Control Circuit
- Fuel Pipe Fuel Pressure Sensor Circuit
- Fuel Tank Fuel Temperature Sensor Circuit
- Starter Signal Circuit
- Engine Control Module Electrical Connector Identification
- Engine Sensors & Switches
- A/C Compressor Lock Sensor
- A/C Evaporator Temperature Sensor
- Air/Fuel (A/F) Sensor
- Airflow Meter
- BRAKELIGHT Switch
- Camshaft Position Sensor
- Crankshaft Position Sensor
- EGR Gas Temperature Sensor
- Engine Coolant Temperature (ECT) Sensor
- Fuel Pipe Fuel Pressure Sensor
- Fuel Rail Fuel Pressure Sensor
- Fuel Rail Fuel Temperature Sensor
- Fuel Tank Fuel Temperature Sensor
- Heated Oxygen Sensor
- Intake Air Temperature Sensor
- Knock Sensor
- Manifold Absolute Pressure (Map) Sensor
- Oxygen Sensor
- Camry CNG Models, Camry Gasoline Models With Calif. Emissions & Camry Solara Calif. Emission Vehicles
- Camry Gasoline Models Except Calif. Emission Vehicles & Camry Solara Except Calif. Emission Vehicles
- Celica
- Corolla
- Echo
- RAV4 Calif. Emission Vehicles
- RAV4 Except Calif. Emission Vehicles
- Tacoma Calif. Emission Vehicles & 4Runner Calif. Emission Vehicles
- Tacoma Except Calif. Emission Vehicles & 4Runner Except Calif. Emission Vehicles
- Park/Neutral Position (PNP) Switch
- Power Steering Pressure Sensor
- Power Steering Pressure Switch
- Positive Temperature Coefficient (PTC) Heater
- Throttle Position Sensor
- Variable Valve Timing (VVT) Sensor
- Vapor Pressure Sensor
- Vehicle Speed Sensor
- 4WD Switch
- Relays
- Fuel Systems
- Fuel Delivery
- Circuit Opening Relay
- EFI Main Relay
- Fuel Pressure Regulator (Camry CNG Models)
- Fuel Pressure Regulator Fuel Shutoff Valve (Camry CNG Models)
- Fuel Pump Pressure (Camry Gasoline Models, Camry Solara, Celica, Corolla, ECHO, RAV4, Tacoma & 4Runner)
- Fuel Pump Resistance & Operation (Camry Gasoline Models, Camry Solara, Celica, Corolla, ECHO, RAV4, Tacoma & 4Runner)
- Fuel Rail Fuel Shutoff Valve (Camry CNG Models)
- Fuel Tank Fuel Shutoff Valve (Camry CNG Models)
- Fuel Control
- Fuel Delivery
- Idle Control Systems
- Ignition Systems
- Emission Systems & Sub-Systems
- Notes
- Exhaust Gas RECIRCULATION (EGR) System Test
- EGR Check Valve
- EGR Gas Temperature Sensor
- EGR Vacuum Modulator
- EGR Vacuum Switching Valve (VSV)
- EGR Valve
- Fuel Evaporation System
- Notes
- Fuel EVAP System Test (Camry Gasoline Models, Camry Solara, Celica & Corolla)
- Fuel EVAP System Test (ECHO)
- Fuel EVAP System Test (RAV4)
- Fuel EVAP System Test (Tacoma & 4Runner)
- Canister Closed Valve Vacuum Switching Valve (Camry Gasoline Models, Camry Solara, Celica, Corolla & ECHO)
- Charcoal Canister
- Cut-Off Valve (Camry Gasoline Models, Camry Solara, Celica, Corolla & ECHO)
- EVAP Vacuum Switching Valve (Camry Gasoline Models, Camry Solara, Celica, Corolla, ECHO, RAV4, Tacoma & 4Runner)
- Overfill Check Valve (Camry Gasoline Models, Camry Solara, Celica, Corolla & ECHO)
- Pressure Switching Valve Vacuum Switching Valve (Camry Gasoline Models, Camry Solara, Celica & Corolla)
- Vapor Pressure Sensor (Camry Gasoline Models, Camry Solara, Corolla, RAV4, Tacoma & 4Runner)
- Vapor Pressure Sensor (Celica & ECHO)
- Vapor Pressure Sensor Vacuum Switching Valve (RAV4, Tacoma & 4Runner)
- Positive Crankcase Ventilation (PCV)
- Variable Valve Lift (VVL) System
- Variable Valve Timing (VVT) System
- Throttle Controls
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.