| VERACRUZ(EN) >2008 > G 3.8 DOHC > Fuel System > Engine Control System > Manifold Absolute Pressure Sensor (MAPS)>Repair procedures |
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FUNCTION
AND OPERATION PRINCIPLE
Manifold Absolute
Pressure Sensor (MAPS) is speed-density type sensor and is installed on
the surge tank. This MAPS senses absolute pressure in surge tank and
transfers this analog signal proportional to the pressure to the PCM. The
PCM calculates the intake air quantity and engine speed based on this
signal. This MAPS consists of piezo-electric element and hybrid IC that
amplifies the element 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 sensor outputs the silicon variation
proportional to pressure change by voltage.
SPECIFICATION
SCHEMATIC
DIAGRAM
COMPONENT
INSPECTION
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