Use this procedure to check the overall function of the fuel level sensor function. During this check, a 1st trip DTC might not be confirmed.

WARNING: When performing following procedure, be sure to observe the handling of the fuel. Refer to FUEL TANK .

TESTING CONDITION:

Before starting overall function check, preparation of draining fuel and refilling fuel is required.

WITH CONSULT-II

NOTE: Start from step 11 , if it is possible to confirm that the fuel cannot be drained by 30l (7-7/8 US gal, 6-5/8 Imp gal) in advance.

Prepare a fuel container and a spare hose.
Release fuel pressure from fuel line, refer to FUEL PRESSURE RELEASE .
Remove the fuel feed hose on the fuel level sensor unit.
Connect a spare fuel hose where the fuel feed hose was removed.
Turn ignition switch OFF and wait at least 10 seconds then turn ON.
Select FUEL LEVEL SE in DATA MONITOR mode with CONSULT-II. See Figure .
Check FUEL LEVEL SE output voltage and note it.
Select FUEL PUMP in ACTIVE TEST mode with CONSULT-II.
Touch ON and drain fuel approximately 30l (7-7/8 US gal, 6-5/8 Imp gal) and stop it.
Fill fuel into the fuel tank for 30l (7-7/8 US gal, 6-5/8 Imp gal).
Check FUEL LEVEL SE output voltage and note it.
Check FUEL LEVEL SE output voltage and confirm whether the voltage changes more than 0.03V during step 7 to 11.

If NG, check the fuel level sensor, refer to FUEL LEVEL SENSOR UNIT CHECK .

Fig 1: Checking Voltage Between ECM Terminal 69 And Ground

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

When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

• You smell fuel, burning insulation, or see smoke.

• Brakes feel soft, pull hard to one side, or make grinding noises.

• The engine overheats, stalls repeatedly, or misfires under load.

• You are missing required tools, torque specs, or safe lifting equipment.

• You are not confident in the next step or safety outcome.

Safety Warning

Overall Function Check: Notes