Diagnosis Procedure

Regarding Wiring Diagram information, refer to "WIRING DIAGRAM - WITH INTELLIGENT CRUISE CONTROL " or "WIRING DIAGRAM - WITHOUT INTELLIGENT CRUISE CONTROL ".

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 harness connector M24 and fuel level sensor unit harness connector B72.
   2. Check continuity between combination meter harness connector M24 and fuel level sensor unit and fuel pump harness connector B72.

      Fuel level sensor unit and fuel pump		Combination meter		Continuity
      Connector	Terminal	Connector	Terminal
      B72	5	M24	27	Yes

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

      Connector	Terminal	Ground	Continuity
      B72	5		No

      Is the inspection result normal? 

      YES: GO TO 3

      NO: Repair or replace harness or connectors.

3. CHECK FUEL LEVEL SENSOR UNIT GROUND CIRCUIT 
   1. Check continuity between combination meter harness connector M24 and fuel level sensor unit and fuel pump harness connector B72.

      Connector	Terminal	Connector	Terminal	Continuity
      B72	2	M24	26	Yes

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

      Connector	Terminal	Ground	Continuity
      B72	2		No

      Is the inspection result normal? 

      YES: GO TO 4

      NO: Repair or replace harness or connectors.

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. Refer to "REMOVAL AND INSTALLATION ".