Engine Controls - System & Component Testing - 4-CYLINDER: Overview

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

Fuel Pump Resistance & Operation

Disconnect electrical connector for fuel pump. See «FUEL PUMP ELECTRICAL CONNECTOR LOCATION»(ref-91238-S11989466152001030600000) table. This is electrical connector for fuel pump and fuel gauge sending unit. FUEL PUMP ELECTRICAL CONNECTOR LOCATION Application Electrical Connector Location Camry, Camry Solara, Celica & Corolla Under Cover Plate, Below Rear Seat RAV4 Under Cover Plate, Below Driver's Side Rear Seat Tacoma & 4Runner On Top Of Fuel Tank At Fuel Pump
To test fuel pump resistance, use ohmmeter to check resistance between specified terminals on fuel pump electrical connector or fuel pump. (Scheme 91)- (Scheme 96). Replace fuel pump and/or lead wire (if equipped) if resistance is not.20-3.00 ohms at 68°F (20°C).
To test fuel pump operation, apply battery voltage and ground to (+) and (-) terminals on electrical connector or fuel pump. (Scheme 91)- (Scheme 96). DO NOT apply battery voltage to fuel pump for more than 10 seconds. Replace fuel pump and/or lead wire (if equipped) if fuel pump fails to operate.