Refrigerant Pressure Sensor: Wiring Diagram

Fig 1: Refrigerant Pressure Sensor - Wiring Diagram

Courtesy of NISSAN MOTOR CO., U.S.A.

Specification data are reference values and are measured between each terminal and ground.

CAUTION: Do not use ECM ground terminals when measuring input/output voltage. Doing so may result in damage to the ECM's transistor. Use a ground other than ECM terminals, such as the ground.

VOLTAGE REFERENCE CHART

TERMINAL NO.	WIRE COLOR	ITEM	CONDITION	DATA (DC Voltage)
41	GR	Refrigerant pressure sensor	[Engine is running] Warm-up condition Both A/C switch and blower fan switch: ON (Compressor operates)	0 - 4.0V
40	BR	Sensor ground (Refrigerant pressure sensor)	[Engine is running] Warm-up condition Idle speed	Approximately 0V
74	W	Sensor power supply (Refrigerant pressure sensor)	[Ignition switch: ON]	Approximately 5V