Refrigerant Pressure Sensor: Wiring Diagram

WARNING: This page is about a different car, the 2006 Nissan Pathfinder. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: Refrigerant Pressure Sensor Wiring Diagram (EC-PR/SEN-01)

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.

SPECIFICATION DATA AND REFERENCE VALUES

TERMINAL NO.	WIRE COLOR	ITEM	CONDITION	DATA (DC Voltage)
49	P	Sensor power supply (Refrigerant pressure sensor/ Battery current sensor)	[Ignition switch: ON]	Approximately 5V
67	B	Sensor ground	[Engine is running] Warm-up condition Idle speed	Approximately 0V
70	BR	Refrigerant pressure sensor	[Engine is running] Warm-up condition Both A/C switch and blower switch: ON (Compressor operates)	1.0 - 4.0V