3. Check Refrigerant Pressure Sensor Power Supply Circuit

WARNING: This page is about a different car, the 2004 Infiniti M45. However, it is still accessible from the selected car via links, so may be relevant.

Disconnect refrigerant pressure sensor harness connector.
Turn ignition switch ON.

Fig 1: Identifying Refrigerant Pressure Sensor
Courtesy of NISSAN MOTOR CO., U.S.A.
Check voltage between refrigerant pressure sensor terminal 1 and ground with CONSULT-II or tester.

Fig 2: Checking Voltage Between Refrigerant Pressure Sensor Terminal & Ground
Courtesy of NISSAN MOTOR CO., U.S.A.

Voltage: Approximately 5V

OK or NG

OK: GO TO 5. CHECK REFRIGERANT PRESSURE SENSOR GROUND CIRCUIT FOR OPEN AND SHORT .
NG: GO TO 4.