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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7570
Location: Brighton


PostPosted: Thu Nov 28, 2019 8:25 pm    Post subject: Reply with quote

The sensor will have a signal wire going to the control unit .. you connect a scope to this wire and see what values it reads .

A PWM signal will be between 10 volts and about 2 volts with anything above or below that being a short circuit to either earth or battery positive .

Whilst we have no set values for what it should be we can still get an idea .. the value will fluctuate in a smooth manner up and down as the car is driven .

With no values from Porsche as to what's correct then you are looking for something that's not right .. ie a constant speed and the value jumping up and down ... a defective sensor in other words .
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wjk_glynn
Silverstone


Joined: 18 Mar 2017
Posts: 119
Location: California


PostPosted: Thu Nov 28, 2019 10:40 pm    Post subject: Re: 997.2 Targa 4s PDK issues Reply with quote

cardy wrote:
...Here in Canada...


FYI that if you want feedback from Canadian and/or US based 997.2 owners, take a look at the Rennlist 997 board: https://rennlist.com/forums/997-forum-113/

Lot's of PDK related threads there...

Karl.
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Stock – 997.2 C2S Coupé • Carrara White / Cocoa • Adaptive Sports Seats • PDK w/SC • PSE
Mods – Front 996-GT2 and Rear 997-Turbo Brake Ducts • 3rd (center) Coolant Radiator • 10mm/15mm Spacers
 
  
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cardy
Newbie


Joined: 12 Nov 2019
Posts: 12



PostPosted: Fri Nov 29, 2019 9:52 pm    Post subject: Reply with quote

I've seen the North American stuff, was looking for other ideas
Thanks for the link though
 
  
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deMort
Dijon


Joined: 21 Mar 2015
Posts: 7570
Location: Brighton


PostPosted: Sat Nov 30, 2019 5:49 pm    Post subject: Reply with quote

I've done a little more digging , best guess is it's the distance sensor as thats all thats listed on the shift rods .. it doesn't appear on the parts list and it does look like a total strip down of the box to replace it ...


Interesting the voltage is 5 volts so on a PWM scope check i would assume the signal will be between 1 and 4 volts and a static signal after it has shifted the rod from end to end .
_________________
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My Daughter's Crowdfunding has hit the target .

Thank you all so Very much .

She's not going until july 2020 though .



Mechanic

7pm - 9pm

Now At An Indy.
 



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