Fuel Pump Resistance & Operation (Sequoia & Tundra)
WARNING: This page does not describe the selected car, but rather 10 other vehicles, including the 2003 Toyota Tundra, 2003 Toyota Tacoma, 2003 Toyota Sienna, 2003 Toyota Sequoia, and 2003 Toyota Land Cruiser. However, it is still accessible from the selected car via links, so may be relevant.
- 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 under FUEL SYSTEMS in REMOVAL & INSTALLATION - V6 & V8 article.
- To test fuel pump resistance, using ohmmeter, check resistance between electrical terminals on fuel pump. See Fig 1. Replace fuel pump if resistance is not.20-3.00 ohms at 68°F (20°C).CAUTION: When applying battery voltage to fuel pump, DO NOT apply battery voltage for more than 10 seconds or fuel pump may be damaged. Keep battery as far away from fuel pump as possible. Always connect jumper wires to fuel pump first, and then to battery, when applying battery voltage to fuel pump.
- To test fuel pump operation, on Sequoia and Tundra, reinstall lead wire on fuel pump. On all models, apply battery voltage and ground to terminals for fuel pump. See Fig 1. 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 does not operate.