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 and ground.
   CONNECTOR VOLTAGE REFERENCE CHART
   
   

   ECM		Ground	Voltage
   Connector	Terminal
   F7	14	Ground	Battery voltage

   Is the inspection result normal? 

   YES: GO TO  9.

   NO: GO TO 2.

1. Turn ignition switch OFF.
2. Disconnect IDPDM E/R harness connector E13.
3. Check the continuity between IPDM E/R harness connector and ECM harness connector.
   CONNECTOR CONTINUITY REFERENCE CHART
   
   

   ECM		IPDM E/R		Continuity
   Connector	Terminal	Connector	Terminal
   F7	14	E13	33	Existed

   Is the inspection result normal? 

   YES: GO TO  4.

   NO: GO TO 3.

Check the following.

• Harness connectors E6, F123
• IPDM E/R connector E13
• Harness for open or short between ECM and IPDM E/R

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

1. Disconnect 15A fuse (No. 57) from IPDM E/R.
2. Check 15A fuse.

   Is the inspection result normal? 

   YES: GO TO 5.

   NO: Replace fuse.

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" and ground.
   CONNECTOR CONTINUITY REFERENCE CHART
   
   

   IPDM E/R		Fuel level sensor unit and fuel pump		Continuity
   Connector	Terminal	Connector	Terminal
   E14	46	B40	5	Existed

   Is the inspection result normal? 

   YES: GO TO  7.

   NO: GO TO 6.

Check the following.

• Harness connectors E105, M77
• Harness connectors M11, B1
• Harness for open or short between "fuel level sensor unit and fuel pump" and IPDM E/R

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

1. Check the continuity between "fuel level sensor unit and fuel pump" and ground.
   CONNECTOR CONTINUITY REFERENCE CHART
   
   

   Fuel level sensor unit and fuel pump		Ground	Continuity
   Connector	Terminal
   B40	3	Ground	Existed

2. Also heck harness for short to power.

   Is the inspection result normal? 

   YES: GO TO 8.

   NO: Repair open circuit or short to power in harness or connectors.

Refer to "COMPONENT INSPECTION ".

Is the inspection result normal? 

YES: GO TO 9.

NO: Replace fuel pump.

Refer to "INTERMITTENT INCIDENT ".

Is the inspection result normal? 

YES: Replace IPDM E/R.

NO: Repair or replace harness or connectors.