Component Function Check

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

CHECK REFRIGERANT PRESSURE SENSOR FUNCTION

Start engine and warm it up to normal operating temperature.
Turn A/C switch and blower fan switch ON.

Check the voltage between ECM harness connector terminals under the following conditions.

VOLTAGE SPECIFICATION

ECM			Voltage (V)
Connector	+	-
Connector	Terminal	Terminal
F13	39 (Refrigerant pressure sensor signal)	40 (Sensor ground)	1.0 - 4.0

Fig 1: Checking Voltage Between ECM Harness Connector Terminals

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

Is the inspection result normal?

YES: INSPECTION END

NO: Go to "DIAGNOSIS PROCEDURE ".