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

Engine Controls - System & Component Testing - 4-CYLINDER: Overview Toyota MR2 W30

Fuel Pump Resistance & Operation (Camry)

Manufacturer lists checking fuel pump resistance and operation with fuel pump removed from fuel tank and fuel pump mounting bracket. For removal of fuel pump from fuel tank and fuel pump mounting bracket, see «FUEL PUMP»(ref-151983-S17683362262003010900000) under FUEL SYSTEMS in REMOVAL & INSTALLATION - 4-CYLINDER article.
To test fuel pump resistance, using ohmmeter, check resistance between electrical terminals on fuel pump. (Scheme 230) Replace fuel pump if resistance is not 0.2-3.0 ohms at 68°F (20°C). See «FUEL PUMP»(ref-151983-S17683362262003010900000) under FUEL SYSTEMS in REMOVAL & INSTALLATION - 4-CYLINDER article.
To test fuel pump operation, apply battery voltage and ground to (+) and (-) terminals on fuel pump. (Scheme 230) DO NOT apply battery voltage to fuel pump for more than 10 seconds. Replace fuel pump if fuel pump does not operate. See «FUEL PUMP»(ref-151983-S17683362262003010900000) under FUEL SYSTEMS in REMOVAL & INSTALLATION - 4-CYLINDER article.

Fuel Pump Resistance & Operation (Camry Solara, Celica, Corolla, ECHO, Highlander, MR2, Prius, RAV4 & Tacoma

WARNING

On Prius, read service precautions before proceeding with service procedure. See SERVICE PRECAUTIONS .

On Camry Solara, Celica, Corolla, ECHO and Prius, remove rear seat cushion, cover plate on floor panel and remaining necessary covers for access to electrical connector for fuel pump.
On Highlander, remove driver's side and passenger's side rear seats and cover plate on floor panel for access to electrical connector for fuel pump.
On MR2, remove luggage compartment lids, quarter trim covers, lower trim covers and luggage compartment boxes behind driver's and passenger's seats, and cover plate on floor panel for access to electrical connector for fuel pump. see scheme 403 For additional information on removal of luggage compartment components, see «FUEL PUMP»(ref-151983-S17683362262003010900000) under FUEL SYSTEMS in REMOVAL & INSTALLATION - 4-CYLINDER article.
On RAV4, remove driver's side rear seat and cover plate on floor panel for access to electrical connector for fuel pump.
On Tacoma, it may be necessary to lower fuel tank for access to electrical connector for fuel pump.
On all models, disconnect electrical connector for fuel pump. This is electrical connector for fuel pump and fuel gauge sending unit and is located on top of fuel tank, near fuel pump.
To test fuel pump resistance, using ohmmeter, check resistance between specified terminals on fuel pump electrical connector or fuel pump. (Scheme 231)- (Scheme 239). Replace fuel pump if resistance is not 0.2-3.0 ohms at 68°F (20°C). On Prius, it may be necessary to replace fuel pump and fuel tank as an assembly. Consult parts department for parts availability. See «FUEL PUMP»(ref-151983-S17683362262003010900000) under FUEL SYSTEMS in REMOVAL & INSTALLATION - 4-CYLINDER article.
To test fuel pump operation, apply battery voltage and ground to (+) and (-) terminals on electrical connector or fuel pump. (Scheme 231)- (Scheme 239). 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. On Prius, it may be necessary to replace fuel pump and fuel tank as an assembly. Consult parts department for parts availability. See FUEL PUMP under FUEL SYSTEMS in REMOVAL & INSTALLATION - 4-CYLINDER article.