DTC Diagnosis Procedure

1. Disconnect engine oil temperature (EOT) sensor harness connector.
2. Turn ignition switch ON.
3. Check the voltage between EOT sensor harness connector and ground.

   +		-	Voltage (Approx.)
   EOT sensor
   Connector	Terminal
   F87	1	Ground	5 V

Is the inspection result normal?

YES

GO TO 3.

NO

GO TO 2.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between EOT sensor harness connector and ECM harness connector.

   EOT sensor		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   F87	1	F143	50	Existed

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

Is the inspection result normal?

YES

Perform trouble diagnosis for ECM power supply circuit. Refer to Diagnosis Procedure .

NO

Repair or replace error-detected parts.

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check the continuity between EOT sensor harness connector and ECM harness connector.

   EOT sensor		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   F87	2	F143	29	Existed

4. Also check harness for short to power.

Is the inspection result normal?

YES

GO TO 4.

NO

Repair or replace error-detected parts.

Refer to Component Inspection .

Is the inspection result normal?

YES

INSPECTION END

NO

Replace engine oil temperature sensor. Refer to TIMING CHAIN : Exploded View .