Diagnosis Procedure

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.




FUEL LEVEL SENSOR SIGNAL CIRCUIT


Diagnosis Procedure

Regarding Wiring Diagram information, Combination Meter.
1.CHECK HARNESS CONNECTOR
1. Turn ignition switch OFF.
2. Check combination meter and fuel level sensor unit terminals (meter-side and harness-side) for poor connection.
Is the inspection result normal?
YES - GO TO 2
NO - Repair or replace terminals or connectors.
2.CHECK FUEL LEVEL SENSOR UNIT CIRCUIT





1. Disconnect combination meter connector and fuel level sensor unit connector.
2. Check continuity between combination meter harness connector
(B) and fuel level sensor unit and fuel pump harness connector
(A).





3. Check continuity between fuel level sensor unit and fuel pump harness connector (A) and ground.





Is the inspection result normal?
YES - GO TO 3
NO - Repair harness or connector.
3.CHECK FUEL LEVEL SENSOR UNIT GROUND CIRCUIT





1. Check continuity between combination meter harness connector
(B) and fuel level sensor unit and fuel pump harness connector
(A).





2. Check continuity between fuel level sensor unit and fuel pump harness connector (A) and ground.





Is the inspection result normal?
YES - GO TO 4
NO - Repair harness or connector.
4.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.