Diagnosis Procedure

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 (V)
   Refrigerant pressure sensor
   Connector	Terminal
   E219	1	Ground	Approx. 5

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

Check sensor power supply 2 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 refrigerant pressure sensor harness connector and ECM harness connector.

   Refrigerant pressure sensor		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   E219	3	F13	25	Existed

4. Also check harness for short to ground and 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.

   Refrigerant pressure sensor		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   E219	2	F13	20	Existed

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

Is the inspection result normal?

YES

GO TO 5.

NO

Repair or replace error-detected parts.

Check intermittent incident. Refer to Intermittent Incident .

Is the inspection result normal?

YES

Replace refrigerant pressure sensor. Refer to Removal and Installation .

NO

Repair or replace error-detected parts.