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 under FUEL SYSTEMS in REMOVAL & INSTALLATION - 4-CYLINDER 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 0.2-3.0 ohms at 68°F (20°C). See FUEL PUMP 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. See Fig 1. 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 under FUEL SYSTEMS in REMOVAL & INSTALLATION - 4-CYLINDER article.
CAUTION:
When testing fuel pump operation, DO NOT apply battery voltage to fuel pump for more than 10 seconds or fuel pump may be damaged. When testing fuel pump operation, keep fuel pump away from battery as far as possible. Always connect jumper wires to fuel pump and then to the battery when applying battery voltage to fuel pump.