Diagnosis Procedure

1. Turn ignition switch OFF.
2. Disconnect fuel injector harness connector.
3. Turn ignition switch ON.
4. Check the voltage between fuel injector harness connector and ground.

   Fuel injector			Ground	Voltage
   Cylinder	Connector	Terminal
   1	F37	1	Ground	Battery voltage
   2	F38	1
   3	F39	1
   4	F40	1
   5	F41	1
   6	F42	1

   Is the inspection result normal? 

   YES: GO TO  3.

   NO: GO TO 2.

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

   Fuel injector			IPDM E/R		Continuity
   Cylinder	Connector	Terminal	Connector	Terminal
   1	F37	1	F12	51	Existed
   2	F38	1		52
   3	F39	1		51
   4	F40	1		52
   5	F41	1		51
   6	F42	1		52

   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. Disconnect ECM harness connector.
3. Check the continuity between fuel injector harness connector and ECM harness connector.

   Fuel injector			ECM		Continuity
   Cylinder	Connector	Terminal	Connector	Terminal
   1	F37	2	F7	33	Existed
   2	F38	2		44
   3	F39	2		48
   4	F40	2		47
   5	F41	2		46
   6	F42	2		45

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

   Is the inspection result normal? 

   YES: GO TO 4.

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

Check fuel injector. Refer to "COMPONENT INSPECTION ".

Is the inspection result normal? 

YES: GO TO 5.

NO: Replace malfunctioning fuel injector. Refer to "EXPLODED VIEW ".

Check intermittent incident. Refer to "INTERMITTENT INCIDENT ".

Is the inspection result normal? 

YES: Replace IPDM E/R. Refer to "EXPLODED VIEW ".

NO: Repair or replace error-detected parts.