Kawasaki VULCAN 1600 CLASSIC (2003) [105/575] Fuel system dfi 3 47

FUEL SYSTEM (DFI) 3-47

Inlet Air Pressure Sensor (Service Code 12)

Suppose:

Pg : Vacuum (gauge) of Throttle Assy

Pl : Local Atmospheric Pressure (absolute) measured by a barometer

Pv : Vacuum (absolute) of Throttle Assy

Vv : Sensor Output Voltage (v)

then

Pv = Pl – Pg

For example, suppose the following data is obtained in the chart of the next page.

Pg = 8 cmHg (vacuum gauge reading)

Pl = 70 cmHg (barometer reading)

Vv = 3.2 V (digital volt meter reading)

then

Pv = 70 – 8 = 62 cmHg (abs)

Plot this Pv (62 cmHg) at a point [1] on the chart and draw a vertical line through the point. Then, you

can get the usable range [2] of the sensor output voltage.

Usable range = 3.04 ∼ 3.49 V

Plot Vv (3.2 V) on the vertical line. → Point [3].

Results: In the chart, Vv is within the usable range and the sensor is normal.

Pv = 24 ∼ 55 cm Hg