Diagnosis Procedure

1. Turn ignition switch OFF.
2. Disconnect FPCM harness connector.
3. Turn ignition switch ON.
4. Check the voltage between FPCM harness connector and ground.
   TERMINAL VOLTAGE REFERENCE CHART
   
   

   FPCM		Ground	Voltage
   Connector	Terminal
   B41	10	Ground	Battery voltage

   Is the inspection result normal? 

   YES: GO TO 2.

   NO: GO TO  3.

1. Turn ignition switch OFF.
2. Disconnect IPDM E/R harness connector.
3. Check the continuity between FPCM harness connector and IPDM E/R harness connector.
   TERMINAL CONTINUITY REFERENCE CHART
   
   

   FPCM		IPDM E/R		Continuity
   Connector	Terminal	Connector	Terminal
   B41	10	E10	13	Existed

4. Also check harness for short to ground.

   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. Check the continuity between FPCM harness connector and ground.
   TERMINAL CONTINUITY REFERENCE CHART
   
   

   FPCM		Ground	Continuity
   Connector	Terminal
   B41	5	Ground	Existed

3. Also check harness for short to power.

   Is the inspection result normal? 

   YES: GO TO 4.

   NO: Repair or replace error-detected parts.

1. Disconnect ECM harness connector.
2. Check the continuity between FPCM harness connector and ECM harness connector.
   TERMINAL CONTINUITY REFERENCE CHART
   
   

   FPCM		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   B41	8	F7	21	Existed
   	9		20

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

   Is the inspection result normal? 

   YES: GO TO 5.

   NO: Repair or replace error-detected parts.

1. Disconnect fuel level sensor unit (fuel pump) harness connector.
2. Check the continuity between FPCM harness connector and fuel level sensor unit (fuel pump) harness connector.
   TERMINAL CONTINUITY REFERENCE CHART
   
   

   FPCM		Fuel level sensor unit (fuel pump)		Continuity
   Connector	Terminal	Connector	Terminal
   B41	6	B40	3	Existed
   	7		1

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

   Is the inspection result normal? 

   YES: GO TO 6.

   NO: Repair or replace error-detected parts.

Check the FPCM. Refer to "COMPONENT INSPECTION (FPCM) ".

Is the inspection result normal? 

YES: Check intermittent incident. Refer to "INTERMITTENT INCIDENT ".

NO: Replace FPCM. Refer to "REMOVAL AND INSTALLATION ".