Diagnosis Procedure

1. 1. Turn ignition switch OFF.
   2. Check that the following fuse is not blowing.

      Fuse No.	Capacity
      No. 60	10 A
      No. 64	15 A

Is the fuse blown (open)?

YES>>

Replace the fuse after repairing the applicable circuit.

NO>>

GO TO 2.

1. 1. Disconnect ECM harness connector.
   2. Turn ignition switch ON.
   3. Check the voltage between ECM harness connector and ground.

      +		-	Voltage
      ECM
      Connector	Terminal
      F24	3	Ground	Battery voltage
      	4

Is the inspection result normal?

YES>>

GO TO 9.

NO>>

GO TO 3.

1. 1. Turn ignition switch OFF.
   2. Disconnect ECM harness connector.
   3. Disconnect direct fuel injector relay 1 and 2 harness connector.
   4. Check the continuity between ECM harness connector and direct fuel injector relay 1 and 2 harness connector.

      ECM		Direct fuel injector relay 1 and 2		Continuity
      Connector	Terminal	Connector	Terminal
      F24	3	F60	2	Existed
      	4		7

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

Is the inspection result normal?

YES>>

GO TO 4.

NO>>

Repair or replace malfunctioning part.

1. Check the voltage between fuel injector relay harness connector and ground.

   +		-	Voltage
   Direct fuel injector relay 1 and 2
   Connector	Terminal
   F60	1	Ground	Battery voltage
   	6

Is the inspection result normal?

YES>>

GO TO 5.

NO>>

Perform trouble diagnosis for power supply circuit.

1. 1. Install all removed parts.
   2. Turn ignition switch ON.
   3. Check the voltage between direct fuel injector relay 1 and 2 harness connector and ground.

      +		-	Voltage
      Direct fuel injector relay 1 and 2
      Connector	Terminal
      F60	3	Ground	Battery voltage
      	8

Is the inspection result normal?

YES>>

GO TO 7.

NO>>

GO TO 6.

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

      IPDM E/R		Direct fuel injector relay 1 and 2		Continuity
      Connector	Terminal	Connector	Terminal
      F96	73	F60	3	Existed
      			8

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

Is the inspection result normal?

YES>>

Perform trouble diagnosis for power supply circuit.

NO>>

Repair or replace malfunctioning part.

1. 1. Turn ignition switch OFF.
   2. Disconnect fuel injector relay harness connector.
   3. Check the continuity between direct fuel injector relay 1 and 2 harness connector and ground.

      Direct fuel injector relay 1 and 2		-	Continuity
      Connector	Terminal
      F60	4	Ground	Existed
      	9

   4. Also check harness for short to power.

Is the inspection result normal?

YES>>

GO TO 8.

NO>>

Repair or replace malfunctioning part.

1. Refer to Component Inspection .

Is the inspection result normal?

YES>>

Check intermittent incident. Refer to Intermittent Incident .

NO>>

Replace direct fuel injector relay 1 and 2.

1. 1. Turn ignition switch OFF.
   2. Check the continuity between ECM harness connector and ground.

      ECM		-	Continuity
      Connector	Terminal
      F24	5	Ground	Existed
      	65
      F25	69
      E16	157
      	159
      	162

   3. Also check harness for short to power.

Is the inspection result normal?

YES>>

GO TO 10.

NO>>

Repair or replace malfunctioning part.

1. 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	F18	2	F24	8	Existed
      2	F19	2		7
      3	F20	2		9
      4	F21	2		6

   4. Also check harness for short to ground.

Is the inspection result normal?

YES>>

GO TO 11.

NO>>

Repair or replace malfunctioning part.

1. Refer to Component Inspection .

Is the inspection result normal?

YES>>

Check intermittent incident. Refer to Intermittent Incident .

NO>>

Replace malfunctioning fuel injector. Refer to Removal and Installation .