Component Inspection (Barometric Pressure Sensor)

1. Turn ignition switch ON.
2. Check the voltage between ECM harness connector terminals as follows.

   ECM
   Connector	+	-
   	Terminal
   E27	75	74

   NOTE: Because the sensor is absolute pressure sensor, output value may differ depending on barometric pressure and altitude.
3. Measure the barometric pressure.
   NOTE: As the barometric pressure described on the synoptic chart is the value at sea level, compensate the pressure with the following chart.

   Altitude (m)	Compensated pressure (hPa)
   0	0
   200	-24
   400	-47
   600	-70
   800	-92
   1000	-114
   1500	-168
   2000	-218

4. Check the barometric pressure sensor value corresponding to the barometric pressure.

   Barometric pressure (hPa)	Voltage (V)
   800	3.1 - 3.7
   850	3.3 - 3.9
   900	3.5 - 4.1
   950	3.8 - 4.3
   1000	4.0 - 4.6
   1050	4.2 - 4.8

   Courtesy of NISSAN NORTH AMERICA, INC.

Is the inspection result normal?

YES

INSPECTION END

NO

Replace barometric pressure sensor. Refer to Removal and Installation .