Diagnostic Test

Check the following items.

• Out of gas
• Low fuel pressure line open

Is the inspection result normal?

YES 

GO TO STEP 2  .

NO 

Repair or replace error-detected parts.

1. Turn ignition switch OFF and wait at least 30 seconds.
2. Listen to fuel level sensor unit and 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 STEP 3  .

Check FPCM power supply and ground circuit. Refer to DIAGNOSIS PROCEDURE .

Is the inspection result normal?

YES 

GO TO STEP 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.
   2WD MODELS
   
   

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

   4WD MODELS
   
   

   +		-		Continuity
   FPCM		Fuel level sensor unit and fuel pump
   Connector	Terminal	Connector	Terminal
   M365	16	M370	3	Existed
   	18		1

4. Also check harness for short to ground.

Is the inspection result normal?

YES 

GO TO STEP 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 STEP 6  .

NO 

Replace fuel pump.

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

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

   4WD MODELS
   
   

   +		-		Continuity
   FPCM		ECM
   Connector	Terminal	Connector	Terminal
   M136	11	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.