DTC Diagnosis Procedure

Refer to CONSULT Function (METER/MA) .

Is the inspection result normal?

YES

GO TO 2.

NO

Proceed to DTC Index

1. Turn ignition switch OFF.
2. Disconnect fuel level sensor unit and fuel pump harness connector.
3. Turn ignition switch ON.
4. Check the voltage between fuel level sensor unit and fuel pump harness connector and ground.

   Fuel level sensor unit and fuel pump		Ground	Voltage (Approx.)
   Connector	Terminal
   B45	3	Ground	5 V

Is the inspection result normal?

YES

GO TO 4.

NO

GO TO 3.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between fuel level sensor unit and fuel pump harness connector and ECM harness connector.

   Fuel level sensor unit and fuel pump		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   B45	3	E19	138	Existed

4. Also check harness for short to ground and to power.

Is the inspection result normal?

YES

Perform the trouble diagnosis for power supply circuit.

NO

Repair or replace error-detected parts.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between fuel level sensor unit and fuel pump harness connector and ECM harness connector.

   Fuel level sensor unit and fuel pump		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   B45	1	E19	158	Existed

4. Also check harness for short to power.

Is the inspection result normal?

YES

GO TO 5.

NO

Repair or replace error-detected parts.

Check the FTT sensor. Refer to Component Inspection .

Is the inspection result normal?

YES

Check intermittent incident. Refer to Inspection .

NO

Replace "fuel level sensor unit and fuel pump". Refer to Removal and Installation .