Mitsubishi 1992 3000GT, Service Manual

Page: 348 / 1308

MULTIPORT On-Vehicle Inspection of MFI
FUEL INJECTION Components
MANIFOLD DIFFERENTIAL PRESSURE (MDP) SENSOR
<Turbo>
Turbo>
Manifold differential
Manifold differential
pressure sensor
pressure sensor
V
output
voltage
Intake manifold plenum pressure
A Equipment side
connector
Engine
control
module
Manifold differential pressure sensor
Engine control module connector
I
OPERATION
Manifold differential pressure switch converts the intake manifold plenum pressure to the voltage
and inputs to the engine control module. Engine control module confirms the operation of EGR system
from this signal and, if there is any error in the EGR system, memorizes the diagnostic trouble code.
l
5 V of power is supplied to the manifold differential pressure sensor from the engine control module,
and the sensor circuit ground is located in the engine control module.
l
The manifold differential pressure sensor output voltage is proportioned to the intake manifold plenum
pressure and sent to the engine control module.
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