Maintenance of electrical applicances
22-57
The description for the sensor output
1.The sensor output
2.The sensor output 2
3. The blow power supply -
4. The blow power supply +12V,
DC
Fig. 6.3 The outline for the indoor temperature
sensor
Fig. 6.4 The definition for the indoor temperature
sensor pins
(2) The sun light sensor
The sun light sensor is an indication for the annual average radiation volume for the whole car, it is a
current type sensor. It is located in the middle of the instrument panel at the back of the front window
glass (shield), in the process of use, the relationship with the real annual average radiation volume
shall be demarcated, then the amendment shall be done in the procedure.
1. The circuit board 2. Photodiode
3. The plastic cover 4. The plug connector
Fig. 6.5 The sketch for the sun light sensor
Fig 6.6 The schematic diagram for the inside of
the sun light sensor
The sun light sensor is a kind of optic-chemical diode (PCD) located on the instrument panel. This
sensor shall send the signal to the air conditioning control module (ECCM), and displays the daily sun
light intensity of the temperature inside the vehicle. If the sun light intensity is very strong as indicated
by the sun light sensor, the air conditioning module shall enable the blower to operate in the maximal
speed, and make up the extra radiation heat with the maximal cooling volume. At the same time, if the
sun light indicated by the sun light sensor is quite weak (the cloudy), then the air conditioning module
shall lower the rotation speed of the blower, and the system shall not possibly operate under the
maximal cooling volume state.
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