Component Function Check

1. Start engine and warm it up to normal operating temperature.
2. Turn A/C switch and blower fan switch ON.
3. Check the voltage between ECM harness connector and ground.
   TERMINALS VOLTAGE REFERENCE
   
   

   ECM		Ground	Voltage
   Connector	Terminal
   F13	39 (Refrigerant pressure sensor signal)	Ground	1.0 - 4.0 V

   Fig 1: Checking Voltage Between ECM Connector Terminals 39 And Ground

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

Is the inspection result normal? 

YES: INSPECTION END

NO: Go to "DIAGNOSIS PROCEDURE ".