DTC Diagnosis Procedure

Confirm the detected malfunction (A or B). Refer to DTC Description .

Which malfunction is detected?

A

GO TO 2.

B

GO TO 7.

Check DTC with combination meter. Refer to Diagnosis Description .

Is the inspection result normal?

YES

GO TO 3.

NO

Refer to Component Function Check .

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 (V)
   Connector	Terminal
   C5	4	Ground	Approx. 5

Is the inspection result normal?

YES

GO TO 5.

NO

GO TO 4.

Check the following.

• Harness for open or short between ECM and fuel level sensor unit and fuel pump
• Loose or poor connection for each connector and harness

Repair open circuit, short to ground or short to power in harness or connector.

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

   Fuel level sensor unit and fuel pump		Combination meter		Continuity
   Connector	Terminal	Connector	Terminal
   C5	5	M344	46	Existed

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

Is the inspection result normal?

YES

GO TO 7.

NO

GO TO 6.

Check the following.

• Harness for open or short between fuel level sensor unit and fuel pump and combination meter
• Loose or poor connection for each connector and harness

Repair open circuit, short to ground or short to power in harness or connector.

Check FTT sensor. Refer to Component Inspection .

Is the inspection result normal?

YES

GO TO 8.

NO

Replace fuel level sensor unit and fuel pump. Refer to FUEL LEVEL SENSOR UNIT, FUEL FILTER AND FUEL PUMP ASSEMBLY : Removal & Installation .

Check intermittent incident. Refer to Inspection .

INSPECTION END