5. Check FPCM Ground Circuit-II For Open And Short
WARNING: This page is about a different car, the 2004 Infiniti Q45. 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.
- 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.
NG: GO TO 6.