Refrigerant Pressure Sensor: Wiring Diagram

Fig 1: Refrigerant Pressure Sensor Wiring Diagram

Courtesy of NISSAN NORTH AMERICA, INC.

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.

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)	1.0 - 4.0 V
48	BR	Sensor ground (Refrigerant pressure sensor)	[Engine is running] Warm-up condition Idle speed	Approximately 0 V
74	W	Sensor power supply (Refrigerant pressure sensor)	[Ignition switch: ON]	Approximately 5.0 V