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Discussion Starter #1
Does anyone know the resistor values for the wiper intermittant period/rain sensor sensitivity on the column stalk?

I've had a look through the 166 eLearn but they don't seem to record the values :(

This will be the resistance values between connector D pins 3 and 10 ( according to eLearn ) with the stalk in the intermittent position and measured for each of the stalk rotation positions.

Thanks.
 

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Does anyone know the resistor values for the wiper intermittant period/rain sensor sensitivity on the column stalk?

I've had a look through the 166 eLearn but they don't seem to record the values <img src="http://www.alfaowner.com/Forum/images/smilies/frown.gif" border="0" alt="" title="Frown" class="inlineimg" />

This will be the resistance values between connector D pins 3 and 10 ( according to eLearn ) with the stalk in the intermittent position and measured for each of the stalk rotation positions.

Thanks.
No sorry, but if yours seems to do almost nothing, (apart from give a wipe when you change the setting one turn) join the club. 馃槵
 

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No sorry, but if yours seems to do almost nothing, (apart from give a wipe when you change the setting one turn) join the club. 馃槵
:rofl::rofl::rofl:

Does anyone know the resistor values for the wiper intermittant period/rain sensor sensitivity on the column stalk?

I've had a look through the 166 eLearn but they don't seem to record the values :(

This will be the resistance values between connector D pins 3 and 10 ( according to eLearn ) with the stalk in the intermittent position and measured for each of the stalk rotation positions.

Thanks.
Don't look too deep peakie.

These moturs dinnae follow Ohms law. Its pure witchcraft these ecus etc etc etc.

Depends whit yer problem is BUTT like domestos ,Optical express etc etc etc Kills 99 percent awe kent germ but the unknown ones are those that cause the problems...AND 99 percent of our customers wood recommend us BUTT If ure the wan wie the dodgy specs and cannae see the wid fur the tress then.


IF you are the norm 99 percent then awe weird and wonder fuel problems are doon tay grease in the wiper unit mechanism. Laodsa (Naw no money) info on here.


Guid luck and as septic peg says 馃槵 when it happens to ewe.


Pomeo
 

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Discussion Starter #4
Thanks for the replies.

I'm not actually trying to fix or troubleshoot anything. I'm just doing a bit of research for a ( looking increasingly unlikely ) future project for my car. I want to see if the 166 stalks work like the 156 or ( 916 ) GTV and to see how the resistance values compare.

I was hoping to save the expense of buying a set of 166 stalks off eBay!
 

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Discussion Starter #6
Give me a day or two and I鈥檒l measure for you.
That's fantastic, thank you.

If it's like the 156 stalks, one position will be infinite resistance. That threw me for a minute or two until I tried another position.
 

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Does the 156 have rain sensing wipers too? Might make a difference to the switch perhaps?

Anyhoo, I'll tabulate the results for you. Should get to it tomorrow (Weds).
 

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Discussion Starter #8
Does the 156 have rain sensing wipers too? Might make a difference to the switch perhaps?
Yes. It may have been standard on some models but on others a rain sensor was part of the 'Winter Kit'.
 

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OK, FWIW...

Measuring at the pins, I got:

Switch position resistance
0 5k2
1 3k4 (probably 3k3?)
2 1k8
3 0

Initially, values were all over the shop, but all stupidly high and around 100k or so. I was suspicious of that, so took the thing to bits and discovered a couple of things. Firstly, Alfa missed out 2 of the screws when they made this in 1999, which didn't help, and secondly, the connection from the flyleads of the stalk switch to the copper busbars of the switch mechanism itself are flaky. Took quite a bit of fiddling to get reliable readings.

Pins 3 & 10 are correct, as the drawing suggests, they are open circuit in all positions other than 'intermittent', when the selected resistance is then dropped in.

HTH
 

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Discussion Starter #10
That's wonderful, thank you.

Interesting that 3 cars from the same manufacturer and all broadly contemporary are quite different

916 GTV : 2k to 66k in 5 steps (from the workshop manual )
156 : 70k to 110k + infinite in 4 steps.

That's a late 156 though. Earlier cars may be different. They do use different rain sensors with late models using the same sensor as the 147/GT.

Thanks again, that's very useful.
 

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The variation is weird isn鈥檛 it. All the wipers would be Bosch anyway wouldn鈥檛 they? Or are they a mix of Bosch and Marelli perhaps? Might explain the differences.

Anyway, good luck with the project.
 

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The variation is weird isn鈥檛 it. All the wipers would be Bosch anyway wouldn鈥檛 they? Or are they a mix of Bosch and Marelli perhaps? Might explain the differences.

Anyway, good luck with the project.
 
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