5. 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 89.

   Refer to Wiring Diagram .

   Continuity should exist. 

4. Also check harness for short to ground or short to power.

OK or NG 

1. OK: GO TO 6.
2. NG: GO TO 5.