Fuel Pump Control System
- Unplug fuel pump relay. Turn ignition on. Check for battery voltage between ground and fuel pump relay connector terminal No. 1 (Brown wire) and terminal No. 3 (Black/White wire).
- If battery voltage is present at terminals No. 2 and 3, go to next step. If battery voltage is not present, check wiring connectors, 10-amp fuse in interior fuse box and 15-amp fuse in relay block.
- Disconnect fuel pump harness connector. Check continuity of Black/Yellow wire between fuel pump relay and fuel pump. Check continuity of Blue/Pink wire between fuel pump relay and ECM connector terminal No. 11. See Fig 1
.
- Repair wiring as necessary. If no faults are found in wiring, test fuel pump relay. See RELAYS
under RELAYS & SOLENOIDS. Also test fuel pump and inspect ECM connector pin terminals.
Courtesy of NISSAN MOTOR CO., U.S.A.