Wiring question

"duurtlang" (duurtlang) 05/29/2016 at 13:46 • Filed to: None

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Anyone familiar with simple power window wiring? I’m working on my ‘87 Peugeot 205 CTI and trying to figure out fix the wiring molestation of a PO.

The problem is the passenger side. After I switch the window motor I can control the passenger window from the driver side door just fine.

This is the switch:

Quite a simple thing. 1987 will do that. Anyway, I used a multimeter. These are the results:

No button pressed: plug 1 and 2 form a circuit, as do 4 and 5.

Left button pressed: plug 1 and 2 form a circuit, as do 3 and 5.

Right button pressed: plug 1 and 3 form a circuit, as do 4 and 5.

There are only 2 wires going to the window motor, and like I mentioned the window works as it should when using the driver side switch.

Here’s a diagram I found in the Peugeot 205 Haynes manual. It’s for a wrong hand drive 205, but that shouldn’t matter once you switch right for left I bet. The red circle covers the part that I think is relevant.

I sadly forgot to photograph the current wiring mess that’s the passenger side switch connector, but let me summarize it by saying there’s only 1 wire coming in, another wire was used as a ground, two were fused together and made no connection to anything and the last was simply cut off. (in random order)

So what do I do? I might be misunderstanding this whole thing, but what I’ve measured with the multimeter doesn’t seem to correspond with the wiring diagram. My thought was: 1+5 output to the window motor, 2+4 input from the driver side, 3 power (or ground?). I’m new to this...

BvdV - The Dutch Engineer > duurtlang 05/29/2016 at 14:07

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I did a quick switching analysis/doodle, and I think you’r right with the 1+5 output to the motor, so 3 should be power then. Seeing you bridge the power to one of the motor poles in this case. I think 2 and 4 are grounded on the driver’s side, and thus causing the other pole of the motor to be grounded. This makes sense, since when nothing is pressed on the passengers side, the driver has full control of the switching of these grounds.

I think it might also be important to find out which pole on the motor is the plus when it’s going up and which when it is going down, in this way you at least find out which need to be matched to the up and down switch.

duurtlang > BvdV - The Dutch Engineer 05/29/2016 at 14:22

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Thanks!

About the plus: This is simple 1980s PSA technology. The switch is symmetrical, and can be put in two different ways. If I’ve got + and - reversed, I put the switch in the other way and it’s fixed.

BvdV - The Dutch Engineer > duurtlang 05/29/2016 at 14:29

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The symmetry should make it a lot less hard then. Good luck fixing it!