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944 TPS pin diagram?
I'm using what I believe is the TPS from a 944 for my 930 EFI project and I'm having trouble figuring out which pin is which. The part number is 0 280 120 400 000. If this is the 944 TPS, does anyone know what the 6 pins go to? Thanks.
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2014 Cayman S (track rat w/GT4 suspension) 1979 930 (475 rwhp at 0.95 bar) |
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11-05-2006, 05:16 PM
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Greasy Member
Join Date: Mar 2006
Location: Indiana
Posts: 1,457
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Mmmm, the 944 has a 5 pin connector of which only 4 actually have connections. Also, that PN doesn't appear to cross over to a Porsche part? I also crossed it with BMW #s, and it doesn't appear to cross over there either? I will check a couple of other references and see what I can find.
-Nick
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Owner: Bennington Motorsports www.benms.com Sponsor for Midwest Region 944-SPEC racing series -When was your timing belt changed or tensioned?? -Yes, I'm the crazy man that will loan out my 9201. Just PM me, I will add you to the list and get it out ASAP. |
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11-05-2006, 05:54 PM
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Thanks for the help.
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2014 Cayman S (track rat w/GT4 suspension) 1979 930 (475 rwhp at 0.95 bar) |
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11-06-2006, 04:27 AM
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That is a Bosch part number.
It is a throttle position switch for a Turbo Looking at the switch itself with the two tabs up, pin 1 in on the right. Porsche never provided a pin diagram for that switch - here are the troubleshooting steps, you can infer a pinout from this. 
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Es geht nicht darum wie schnell man faehrt, sondern wie gut man schnell fahren kann. Ihr Brunnen der nutzlosen Porsche Information |
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11-06-2006, 04:58 AM
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Right now I've got it wired: pin 1 is 5V, pin 2 is 0V, and pin 3 is signal.
On test item 1.1, do you think they mean terminal 2 on the DME or on the TPS? If it's the TPS, then I do have pins 2 & 3 switched. On test item 2.1 they say check for 5V across teminals 1 & 2 which shows it's wired correctly now. Now I'm really confused.
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2014 Cayman S (track rat w/GT4 suspension) 1979 930 (475 rwhp at 0.95 bar) |
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11-06-2006, 07:59 AM
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Here is the schematic diagram:
 I suggest staying within the voltages as indicated. The potentiometer has a fixed scale. You will have to adapt your electronics accordingly.
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Hugh - So Cal 83 944 Driver Person NOT a 'real' Porsche -- Its Better!!!! When was the last time you changed your timing and balance belts and/or cam chain and tensioner? New Users please add your car's year and model to your signature line! Never break more than you fix! |
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11-06-2006, 08:10 AM
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Just to make sure I'm reading the diagram correctly, would you say #1 is 5V, #3 is signal, and #2 is 0V ?
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2014 Cayman S (track rat w/GT4 suspension) 1979 930 (475 rwhp at 0.95 bar) |
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11-06-2006, 12:17 PM
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1979 Porsche 930 3.4
1983 Porsche 944 2.5 liter
