Diagnosis Procedure

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

   +		-	Voltage (Approx.)
   Refrigerant pressure sensor
   Connector	Terminal
   E35	3	Ground	5.0 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.

   +		-		Continuity
   Refrigerant pressure sensor		ECM
   Connector	Terminal	Connector	Terminal
   E35	3	E16	104	Existed

4. Also check harness for short to ground.

   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
   E35	1	E16	124	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 ECM harness connector and refrigerant pressure sensor harness connector.

   +		-		Continuity
   Refrigerant pressure sensor		ECM
   Connector	Terminal	Connector	Terminal
   E35	2	E16	103	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 "INTERMITTENT INCIDENT ".

Is the inspection result normal? 

YES: Replace refrigerant pressure sensor. Refer to "REMOVAL AND INSTALLATION " (For automatic air conditioner), or "REMOVAL AND INSTALLATION " (For manual air conditioner).

NO: Repair or replace error-detected parts.