Nissan Sentra manuals

Nissan Sentra Service Manual: Fuel level sensor signal circuit

Description

The fuel level sensor unit and fuel pump detects the approximate fuel level in the fuel tank and transmits the fuel level signal to the combination meter.

Component function check

1.Combination meter input signal

  1. Select meter/m&a on consult.
  2. Using FUEL METER of DATA MONITOR, compare the value of DATA MONITOR with fuel gauge pointer of combination meter.

Does the data monitor value approximately match the fuel gauge indication?


Does the data monitor value approximately match the fuel gauge indication? YES >> Inspection End.

NO >> Replace combination meter. Refer to MWI-77, "Removal and Installation".

Diagnosis procedure

Regarding wiring diagram information, refer to mwi-28, "wiring diagram".

1.Check fuel level sensor circuit

  1. Turn ignition switch off.
  2. Disconnect combination meter connector and fuel level sensor unit connector.
  3. Check continuity between combination meter harness connector and fuel level sensor unit harness connector.


  1. Check continuity between combination meter harness connector and ground.

Is the inspection result normal?


Is the inspection result normal? Yes >> go to 2.

No >> repair or replace harness or connector.

2.Check fuel level sensor ground circuit

  1. Check continuity between fuel level sensor unit harness connector and combination meter harness connector.


  1. Check continuity between combination meter harness connector and ground.

Is the inspection result normal?


Is the inspection result normal? YES >> GO TO 3.

NO >> Repair or replace harness or connector.

3.Check installation condition

Check fuel level sensor unit installation, and check whether the float arm interferes or binds with any of the internal components in the fuel tank.

Is the inspection result normal? Yes >> inspection end.

No >> install the fuel level sensor unit properly. Refer to fl-6, "removal and installation".

Component inspection

1.Remove fuel level sensor unit

Remove the fuel level sensor unit. Refer to fl-6, "removal and installation".

>> Go to 2.

2.Check fuel level sensor unit

Check the resistance between fuel level sensor unit and fuel pump.

*: When float rod is in contact with stopper.


*: When float rod is in contact with stopper.

Is inspection result ok?


Is inspection result ok? Yes >> inspection end.

No >> replace fuel level sensor unit and fuel pump. Refer to fl-6, "removal and installation".

Illumination control switch signal circuit
Diagnosis procedure Regarding wiring diagram information, refer to mwi-28, "wiring diagram". 1.Check combination meter input signal Turn ignition switch on. Check voltage between the ...

Parking brake switch signal circuit
Component function check 1.Check parking brake switch operation Check that brake warning lamp in combination meter turns on/off when parking brake is actuated. Is the inspection result normal? ...

Other materials:

Control buttons
The control buttons for the Bluetooth® Hands-Free Phone System are located on the steering wheel. PHONE/SEND Press the   button to initiate a VR session or answer an incoming call. You can also use the button to interrupt the system feedback and give a command at once. See “L ...

Combination meter
Reference Value VALUES ON THE DIAGNOSIS TOOL NOTE: The following table includes information (items) inapplicable to this vehicle. For information (items) applicable to this vehicle, refer to CONSULT display items. Note: Some items are not available according to vehicle specificat ...

Door locks/unlocks precaution
Do not push the door handle request switch with the Intelligent Key held in your hand as illustrated. The close distance to the door handle will cause the Intelligent Key system to have difficulty recognizing that the Intelligent Key is outside the vehicle. After locking with the ...

© 2014-2024 Copyright www.nisentra.com