Air inlet pressure / inlet manifold
temperature sensor
The
air
inlet pressure and intake manifold temperature
are measured via a combined sensor positioned on the
inlet pipe.
The air inlet pressure sensor measures absolute pres-
sure, which is the sum of air inlet pressure and atmos-
pheric pressure. The sensor supplies the control unit
with a voltage signal proportional to the absolute pres-
sure. The sensor receives a reference signal of 5 Volts
from the control unit.
The intake manifold temperature sensor comprises a
non-linear resistor, where the resistance is dependant
on the temperature of the resistor body. The resistance
drops as temperature rises.
Oil pressure sensor
The oil pressure is measured by a sensor located next
to the control unit.
The sensor is fitted in the engine block so that meas-
urements are performed in the lubrication systems
main oil galley. The pressure signal is a voltage signal
proportional to the pressure. The sensor reference
voltage is 5 Volts.
IEGR
Internal exhaust gas recirculation, IEGR, is used for
recirculation of exhaust gases. This for lowering the
emissions from the engine. The IEGR control valve, is
located on the cylinder head under the valve cover.
Oil level / temperature sensor
The sensor is located in the oil sump.
The purpose of the level sensor is to detect if the oil
level becomes too low. A current is passed through the
sensor and the voltage measured across it is then pro-
portional to the oil level. An alarm signal is sent when
the oil level is too low. The temperature sensor consists
of a non-linear resistor, where the resistance is
dependent on the temperature of the resistor body.
The resistance drops as temperature rises.
P0013515
30-0 General
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