Fuel Level Sensor Signal Circuit

FUEL LEVEL SENSOR SIGNAL CIRCUIT

Component Function Check


2WD MODELS


1. CHECK COMBINATION METER OUTPUT SIGNAL

Select the "Data Monitor" for the "METER/M&A" and compare the "FUEL METER" monitor value with the fuel gauge reading on the combination meter.





Does monitor value match fuel gauge reading?
YES- INSPECTION END
NO- Replace combination meter. Removal And Installation.

AWD MODELS


1. CHECK COMBINATION METER OUTPUT SIGNAL

Select the "Data Monitor" for the "METER/M&A" and compare the "FUEL METER" monitor value with the fuel gauge reading on the combination meter.





Does monitor value match fuel gauge reading?
YES- INSPECTION END
NO- Replace combination meter. Removal And Installation.


Diagnosis Procedure


1. CHECK COMBINATION METER INPUT SIGNAL

1.Turn ignition switch ON.
2.Check voltage between combination meter harness connector and ground.





Does it match fuel gauge reading?
YES- GO TO 2.
NO- Replace the combination meter. Removal And Installation.

2. 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 terminal and fuel level sensor unit harness connector terminal.





4.Check continuity between combination meter harness connector terminal and ground.





Is the inspection result normal?
YES- GO TO 3.
NO- Repair harness or connector.

3. CHECK FUEL LEVEL SENSOR GROUND CIRCUIT

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





Is the inspection result normal?
YES- INSPECTION END
NO- Repair harness or connector.


Component Inspection


2WD MODELS


1. REMOVE FUEL LEVEL SENSOR UNIT (MAIN)

Remove the fuel level sensor unit (main). Removal And Installation.
- GO TO 2.

2. CHECK FUEL LEVEL SENSOR UNIT (MAIN)






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





Is inspection result OK?
YES- INSPECTION END
NO- Replace fuel level sensor unit and fuel pump (main). Removal And Installation.

AWD MODELS


1. REMOVE FUEL LEVEL SENSOR UNIT (MAIN)

Remove the fuel level sensor unit (main). Removal And Installation.
- GO TO 2.

2. CHECK FUEL LEVEL SENSOR UNIT (MAIN)






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





Is inspection result OK?
YES- GO TO 3.
NO- Replace fuel level sensor unit and fuel pump (main). Removal And Installation.

3. REMOVE FUEL LEVEL SENSOR UNIT (SUB)

Remove the fuel level sensor unit (sub). Removal And Installation.
- GO TO 4.

4. CHECK FUEL LEVEL SENSOR UNIT (SUB)






Check the resistance between fuel level sensor unit (sub).





Is inspection result OK?
YES- INSPECTION END
NO- Replace fuel level sensor unit (sub). Removal And Installation.