Refrigerant Pressure Sensor: Wiring Diagram

WARNING: This page is about a different car, the 2009 Nissan Sentra. However, it is still accessible from the selected car via links, so may be relevant.

Fig 1: EC-RP/SEN-01 - Wiring Diagram

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

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

CAUTION: Never 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 SPECIFICATION CHART

TERMINAL NO.	WIRE COLOR	ITEM	CONDITION	DATA (DC Voltage)
39	L	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
40	R/G	Sensor ground (Refrigerant pressure sensor)	[Engine is running] Warm-up condition Idle speed	Approximately 0 V
72	G/W	Sensor power supply (Refrigerant pressure sensor)	[Ignition switch: ON]	Approximately 5 V