4. Check Refrigerant Pressure Sensor Ground Circuit For Open And Short

1. Turn ignition switch OFF.
2. Disconnect ECM harness connector.
3. Check harness continuity between refrigerant pressure sensor terminal 3 and ECM terminal 67. Refer to Wiring Diagram.
   1. Continuity should exist. 
4. Also check harness for short to ground and short to power.

OK or NG 

OK >> GO TO 6. CHECK REFRIGERANT PRESSURE SENSOR INPUT SIGNAL CIRCUIT FOR OPEN AND SHORT .

NG >> GO TO 5. DETECT MALFUNCTIONING PART .