Fuel Pump

Disconnect fuel pump harness connector. For location, see FUEL PUMP HARNESS CONNECTOR LOCATIONS  table. On Frontier and Xterra 4-cylinder models, measure resistance between fuel pump connector terminals P1 and P2. See Fig 1. On Maxima and Sentra, measure resistance between fuel pump connector terminals No. 1 and 3. See Fig 2. On Quest, measure resistance between fuel pump connector terminals No. 2 and 3. See Fig 3. On all models except Frontier and Xterra 4-cylinder models, Maxima, Quest and Sentra, measure resistance between fuel pump 2-pin connector terminals. On all models, resistance should be 0.2-5.0 ohms at 77°F (25°C). Replace fuel pump, if resistance is not as specified.

Fig 1: Checking Fuel Pump (Frontier 4-Cylinder & Xterra 4-Cylinder)

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 2: Checking Fuel Pump (Maxima Shown; Sentra Is Similar)

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 3: Checking Fuel Pump (Quest)

Courtesy of NISSAN MOTOR CO., U.S.A.

Fig 4: Locating Fuel Pump Relay (Sentra)

Courtesy of NISSAN MOTOR CO., U.S.A.