5. Check FPCM Ground Circuit-II For Open And Short

WARNING: This page is about a different car, the 2004 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect "fuel level sensor unit and fuel pump" harness connector.

Fig 1: Identifying Fuel Level Sensor Unit And Fuel Pump Harness Connector
Courtesy of NISSAN MOTOR CO., U.S.A.
Disconnect dropping resistor harness connector.
Check harness continuity between the following;
"fuel level sensor unit and fuel pump" terminal 1 and dropping resistor terminal 2,

FPCM terminal 4 and dropping resister terminal 2. Refer to WIRING DIAGRAM .

Continuity should exist.
Check harness continuity between the following;
FPCM terminal 4 and ground,

"fuel level sensor and fuel pump" terminal 1 and ground. Refer to WIRING DIAGRAM .

Continuity should not exist.
Also check harness for short to power.

OK or NG

OK: GO TO 7. CHECK FPCM INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT .
NG: GO TO 6.