FLA -34
FUEL SYSTEM
MANIFOLD ABSOLUTE
PRESSURE SENSOR (MAPS)
INSPECTION
E99BD12F
FUNCTION AND OPERATION PRICIPLE
0
MAP
0.789
1.842
4.000
20
46.66
101.32
Output V
oltage(V)
Pressure (kpa abs.)
LGLG002A
Manifold Absolute Pressure Sensor (MAPS) is speed-den-
sity type sensor and is installed on the surge tank. This
MAPS senses absolute pressure in surge tank and trans-
fers this analog signal proportional to the pressure to the
PCM. The PCM calculates the intake air quantity and en-
gine speed based on this signal. This MAPS consists of
piezo-electric element and hybrid IC that amplifies the ele-
ment output signal. The element is silicon diaphragm type
and adapts pressure sensitive variable resistor effect of
semi-conductor. 100% vacuum and the manifold pressure
applies to both sides of it respectively. That is, this sen-
sor outputs the silicon variation proportional to pressure
change by voltage.
SPECIFICATION
Pressure(kPa)
Output Voltage (V)
20.0
0.79
46.66
1.84
101.32
4.0