01-17-2014, 11:23 AM
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#44
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Member
Join Date: Jan 2014
Drives: Scion frs firestorm
Location: Queens
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Quote:
Originally Posted by milkesfrs
You will need to hook up the wires from your window module to the diver side widow controller. ( PIC is at the bottom. )
There are basically three types of power window systems used in
automobiles at this time. The differences between the three are as
follows.
Type A:
The power window control switches for a type A window system
never change polarity when the ignition key is turned on. The
switches in a type A system either rest at ground or rest open (no
connection). The switches in a type A system will either switch
+12 volts and ground at the same time to achieve up or down
window motor polarity, or both wires will be resting at ground
and when the window switch is activated, one wire will switch to
+12 volts while the second wire will remain grounded (Same as a
5 wire power door lock system). In all variations of the type A
system, the power window control switches always provide +12
volt output to operate the window motors.
Type B:
The power window control switches in a type B system change
polarity when the ignition key is turned on. The wires in a type B
system will rest at ground until the ignition key is turned on.
Once the ignition key is turned on, the wires will be resting at
+12 volts. When the ignition key is turned on and the window
switch is activated, the window switch will provide a ground
signal to the window motor. (Just the reverse of a type A system).
For the type B system, two additional relays must be added to
reverse the polarity of the switched ground output wires.
Type C:
The power window control switches in a type C system are the
same as in a type A system with one exception. The window
motors in a type C system are grounded by the motor housing
and use two different coil windings to run the window motor up
and down. Type C window systems are rare but it is important to
make a simple test to insure that the vehicle you are working on
does not use the type C window system.
I am not sure what type of system the FRS uses. I think its Type A but you will have to do some testing.
Using a voltmeter, test and locate the Up + and
Down + wires provided by the window control switches for both
the drivers and passengers window. If you get UP - and Down - you will need 2 relays . Then follow your install instructions that came with your Viper 5704
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Can a Bosch style relay work?
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