CS35 2013.04
3.1.13-13 3.1.13-13Electronic Control System - ME7
Refrigerant Pressure Switch
Refrigerant pressure switch is located on the high
pressure side of the refrigeration system, it pro-
vides cooling pipe status signals to ECM, ECM
uses this information to control the air-condition-
ing solenoid clutch, the air-conditioning fan and
the idle speed.
Vehicle Speed Sensor (AT)
Speed sensor is installed on the transmission, the
speed sensor is Hall - style, the working power is
applied by the ECM controlled main relay, when
the vehicle is driving, the sensor outputs rectan-
gular pulse signal.
Fuel Injector
Fuel injector is installed on the cylinder head, it
follows the ECM instruction to inject fuel within
the stipulated time, ECM controls the injector
grounding signal. The injector is solenoid - con-
trolled, the fuel injection quantity depends on the
needle valve opening time which is the pulse
width of the turning on electricity.
Ignition Coil
The ignition coil is mounted on the upper thermo-
stat seat. Ignition coil transforms the low voltage
of primary winding into secondary winding high
voltage, spark discharge through the spark plug,
igniting the mixture of air and fuel within the cylin-
der. ECM controls the ignition coil primary coil to
ground.
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