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.

   Refrigerant pressure sensor		Ground	Voltage (V)
   Connector	Terminal
   E300	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.

   Refrigerant pressure sensor		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   E300	1	F8	96	Existed

   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.

   Refrigerant pressure sensor		ECM		Continuity
   Connector	Terminal	Connector	Terminal
   E300	3	F8	64	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
   E300	2	F8	63	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 "EXPLODED VIEW ".

NO: Repair or replace error-detected parts.