PR25DD engine

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

   +		-	Voltage (Approx.)
   Refrigerant pressure sensor
   Connector	Terminal
   E219	3	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 refrigerant pressure sensor harness connector and ECM harness connector.

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 refrigerant pressure sensor harness connector and ECM harness connector.

   +		-		Continuity
   Refrigerant pressure sensor		ECM
   Connector	Terminal	Connector	Terminal
   E219	1	F91	45	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.

1. Check the continuity between refrigerant pressure sensor harness connector and ECM harness connector.

   +		-		Continuity
   Refrigerant pressure sensor		ECM
   Connector	Terminal	Connector	Terminal
   E219	2	F91	48	Existed

2. 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.

Check intermittent incident. Refer to Inspection .

Is the inspection result normal?

YES

Replace refrigerant pressure sensor. Refer to REFRIGERANT PRESSURE SENSOR : Removal & Installation .

NO

Repair or replace error-detected parts.