Fuel Pump

Remove fuel tank filler cap. Turn ignition switch to RUN position. Listen for fuel pump operating noise. If noise is not present, check fuel pump relay and wiring harness between relay and pump. If no faults are found, check Fuel Pump Control Module (FPCM). See DTC P1220: FUEL PUMP CONTROL MODULE (FPCM) in appropriate TESTS W/CODES articles below.
- For I30 see TESTS W/CODES
- For Q45 see TESTS W/CODES
On all models, if FPCM is okay, disconnect fuel pump/sending unit harness connector at fuel tank. On I30, check resistance across fuel pump terminals. On Q45, check resistance between terminals No. 1 and 3. See Fig 1 . On all models, at 68°F (20°C) reading should indicate less than 5 ohms. If resistance is not correct, replace fuel pump.

Fig 1: Checking Fuel Pump Resistance (Q45 Shown; I30 Is Similar)

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