Diagnosis Procedure

Check the following items.

• Out of gas
• Low fuel pressure line open

Is the inspection result normal?

YES

GO TO 2.

NO

Repair or replace error-detected parts.

1. Turn ignition switch OFF and wait at least 30 seconds.
2. Listen to fuel pump operation sound for a few seconds after ignition switch is turned ON.

Is the inspection result normal?

YES

INSPECTION END

NO

GO TO 3.

Check FPCM power supply and ground circuit. Refer to Diagnosis Procedure .

Is the inspection result normal?

YES

GO TO 4.

NO

Repair or replace error-detected parts.

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

   +		-		Continuity
   FPCM		Fuel level sensor unit and fuel pump
   Connector	Terminal	Connector	Terminal
   M456	11	M370	3	Existed
   	12		1

4. Also check harness for short to ground.

Is the inspection result normal?

YES

GO TO 5.

NO

Repair or replace error-detected parts.

Check fuel pump. Refer to Component Inspection (Fuel Pump) .

Is the inspection result normal?

YES

GO TO 6.

NO

Replace fuel pump.

1. Disconnect ECM harness connector.
2. Check the continuity between FPCM harness connector and ECM harness connector.

   +		-		Continuity
   FPCM		ECM
   Connector	Terminal	Connector	Terminal
   M135	2	E48	127	Existed

3. Also check harness for short to ground.

Is the inspection result normal?

YES

INSPECTION END

NO

Repair or replace error-detected parts.