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-   -   Power window short (http://www.peachparts.com/shopforum/showthread.php?t=322533)

inventor 08-04-2012 02:33 PM

Power window short
 
Hi there I thing I have a short on my 1994 S350 turbodiesel
I need help testing the window wiring, the color code is not the same on both ends motor to switch and the power feed is 12v on both leads in the motor plug is this normal?
Can some one provide a schematic please.

diknikl 08-05-2012 09:51 AM

here are the wiring diagrams

http://www.autolib.diakom.ru/CAR/Mercedes-Benz/1994/S350/SYSTEM%20WIRING%20DIAGRAMS/

inventor 08-09-2012 12:05 AM

Quote:

Originally Posted by diknikl (Post 2986171)



---------------------------------

Thank you very much that is exactly what I need have a wonderful day..:cool::cool::cool:

Diesel911 08-09-2012 01:27 AM

On the W123s the Motor is not grounded through the Chassis like a Starter Motor is.

The Window Motor Direction Change is done by the Window Switch alternating polarity; the Ground is though the Window Switch.

That means if you are probing with a Volt Meter and one Probe of the Volt Meter is grounded to the Chassis no matter which direction you move the Window Switch you will get 12 Volts.

If you were to hook your Voltmeter in series with one of the Window Motor Wires when you push the switch one way you would get + 12 Volts (on a Digital Volt Meter) and when you push the other side of the Switch you would get a -12 Volts.

inventor 08-09-2012 09:57 AM

Quote:

Originally Posted by Diesel911 (Post 2988579)
On the W123s the Motor is not grounded through the Chassis like a Starter Motor is.

The Window Motor Direction Change is done by the Window Switch alternating polarity; the Ground is though the Window Switch.

That means if you are probing with a Volt Meter and one Probe of the Volt Meter is grounded to the Chassis no matter which direction you move the Window Switch you will get 12 Volts.

If you were to hook your Voltmeter in series with one of the Window Motor Wires when you push the switch one way you would get + 12 Volts (on a Digital Volt Meter) and when you push the other side of the Switch you would get a -12 Volts.

Thanks,.... much aprisiated.........


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