Diagnosis Procedure

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Turn ignition switch ON.
4. Check the voltage between ECM harness connector terminals.

   ECM				Voltage
   +		-
   Connector	Terminal	Connector	Terminal
   F13	19	E10	152	Battery voltage

Is the inspection result normal?

YES

GO TO 4.

NO

GO TO 2.

Check the voltage between IPDM E/R harness connector and ground.

Is the inspection result normal?

YES

GO TO 3.

NO

GO TO 7.

1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector.
3. Check the continuity between ECM harness connector and IPDM E/R harness connector.

Is the inspection result normal?

YES

Perform the trouble diagnosis for power supply circuit.

NO

Repair or replace error-detected parts.

1. Disconnect "fuel level sensor unit and fuel pump" harness connector.
2. Check the continuity between IPDM E/R harness connector and "fuel level sensor unit and fuel pump" harness connector.

   IPDM E/R		Fuel level sensor unit and fuel pump		Continuity
   Connector	Terminal	Connector	Terminal
   E18	15	B42	6	Existed

Is the inspection result normal?

YES

GO TO 5.

NO

Repair open circuit or short to power in harness or connectors.

1. Disconnect "fuel level sensor unit and fuel pump" harness connector.
2. Check the continuity between "fuel level sensor unit and fuel pump" harness connector and ground.

   Fuel level sensor unit and fuel pump		Ground	Continuity
   Connector	Terminal
   B42	4	Ground	Existed

Is the inspection result normal?

YES

GO TO 6.

NO

Repair open circuit or short to power in harness or connectors.

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

Is the inspection result normal?

YES

GO TO 7.

NO

Replace "fuel filter and fuel pump assembly". Refer to Removal and Installation .

Check intermittent incident. Refer to Intermittent Incident .

Is the inspection result normal?

YES

Replace IPDM E/R. Refer to Removal and Installation .

NO

Repair or replace error-detected parts.