Mazda 626 Station Wagon, Руководство по ремонту

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POWER WINDOW SYSTEM
Limit Switch
Function
• The limit switch detects the rotation position (window glass position) of the shaft in the motor and outputs it to
the P/W CM.
Structure
• The limit switch consists of a plate, which rotates with the motor shaft, a scroll groove inside the housing, a
slider (with a brush) that moves along the groove, and print base A, on which contact patterns are printed.
+5 V
GND
-
.. ______ r
1 1
<a>
1 Plate 7 Print base A
2 Housing 8 Contact pattern
3
Scroll groove
9 Door glass position detection signal
4 Slider
10 Bottom of door glass
5 Pin 11 Top of door glass
6 Brush
• For output, the limit switch has a built-in signal inverting circuit that inverts ON/OFF signals at the contact
points.
* The output waveform in the figure above describes the signal waveform when the motor is connected to the
P/W CM. If the motor is not connected to the P/W CM, electric power is not supplied to the signal inverting
circuit and the waveform is not output.
S -6