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Engine Controls - System & Component Testing - 4-CYLINDER Toyota 4Runner III

Step-by-step instructions on "Engine Controls - System & Component Testing - 4-CYLINDER" for Toyota 4Runner III (1995–2003). Pick an article — removal, installation, adjustment and diagnostics with illustrations.

Power & Ground Circuits

AIR/FUEL (A/F) SENSOR

AIRFLOW METER

Tacoma & 4Runner

BRAKELIGHT SWITCH

Camry, Corolla, Tacoma & 4Runner

Camry Solara, Celica & RAV4

Camry, Camry Solara, Corolla, RAV4, Tacoma & 4Runner

Celica

ENGINE COOLANT TEMPERATURE (ECT) SENSOR

HEATED OXYGEN SENSOR

Camry, Camry Solara, Celica, Corolla & RAV4

KNOCK SENSOR

Camry Calif. Emission Vehicles & Camry Solara Calif. Emission Vehicles

Camry Except Calif. Emission Vehicles & Camry Solara Except Calif. Emission Vehicles

Corolla

RAV4 Calif. Emission Vehicles

RAV4 Except Calif. Emission Vehicles

A/T Models

Camry, Camry Solara & Corolla

Camry, Camry Solara, Celica, Corolla, Tacoma & 4Runner

RAV4

VAPOR PRESSURE SENSOR

CIRCUIT OPENING RELAY

EFI MAIN RELAY

Fuel Pump Pressure

Fuel Injectors (Camry, Camry Solara & RAV4)

Fuel Injectors (Celica, Tacoma & 4Runner)

Fuel Injectors (Corolla)

Fuel Cut System

Camry, Camry Solara, Celica, RAV4, Tacoma & 4Runner

THROTTLE BODY

IGNITION SYSTEM

Tacoma With A/T & 4Runner With A/T

EGR VACUUM MODULATOR

FUEL EVAPORATION SYSTEM

Charcoal Canister

Cut-Off Valve (Camry, Camry Solara, Celica & Corolla)

EVAP Vacuum Switching Valve

Overfill Check Valve (Camry, Camry Solara, Celica & Corolla)

Vapor Pressure Sensor Vacuum Switching Valve

POSITIVE CRANKCASE VENTILATION (PCV)

Camry, Camry Solara, Celica & RAV4