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How do I reprogram the throttle position sensor?

Tiny
BIGFOOT15
  • MEMBER
  • 1997 VOLKSWAGEN JETTA
  • 400,000 MILES
Keep getting codes P1544 & P1580, but the car runs great.
Wednesday, April 4th, 2012 AT 12:56 AM

23 Replies

Tiny
EXOVCDS
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Throttle adaptation is performed with a scan tool.

If adaptation does not take, or errors persist, check wiring. Replace throttle body if no faults are found.
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Wednesday, April 4th, 2012 AT 2:48 AM
Tiny
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Tell me more about adaptation. Nobody has told me about adaptation in so many words.I am trying to avoid replacing the the throttle body since it runs so good. Just ask the guy in the pickup with the hemi that I smoked.
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Wednesday, April 4th, 2012 AT 3:10 AM
Tiny
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Throttle adaptation is performed on throttle bodies that are "motorized".

If your engine does not have motorized TB, then no adaptation can be done.

What size engine have you got? I assume VR6?

You will need to use VCDS (vag-com) to run the adaptation. Clean the throttle body
before adaptation, as a dirty throttle bore can cause idle issues & set idle codes.

Follow the directions in the link above to perform the adaptation.

Thomas
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Wednesday, April 4th, 2012 AT 3:27 AM
Tiny
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Told them it was a 1997 VW JETTA 2.0.& They dont even bother to print the whole dang question. Any how it is a 1997 VW Jetta with a 2.0 8 valve engine with a throttle cable(I did mention this). If it has a cable, does this not mean it is not an electronic, fly by wire, motorized throttle?
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Wednesday, April 4th, 2012 AT 3:59 AM
Tiny
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I'm a user just like you. I didn't see that it was a 2 liter engine.

I assumed VR6 because you smoked the hemi! :)

You can not "reprogram" the tps. It is just an input to the ECM

Post a picture of your engine bay and I will tell you if the throttle body is motorized or not.

Drive by wire didn't start until 2001, but cable & motorized TB were around in 97/98.
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Wednesday, April 4th, 2012 AT 4:09 AM
Tiny
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The codes you listed pertain to a motorized (with cable) TB.

Google throttle body cleaning & adaptation (ABA engine).
If that does not solve the issue, replace the throttle body.

Thomas
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Wednesday, April 4th, 2012 AT 4:19 AM
Tiny
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Ok, I will try to get you a picture.I noticed you dont call yourself an expert, so I will value your opinion.
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Wednesday, April 4th, 2012 AT 4:20 AM
Tiny
FIXITMR
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Heres a guide on doing a throttle body service, this will help

https://www.2carpros.com/articles/throttle-actuator-service
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Monday, April 9th, 2012 AT 8:51 PM
Tiny
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My original Question mentioned the engine size, but I asked again &forgot to mention the engine size.I thought I was continuing my original thread, oops. Thanks to fixitmr for the websight. Thank you exovcds for the honest intelligent advice.
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Tuesday, April 10th, 2012 AT 4:56 AM
Tiny
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Attached is a picture of a 1998 2.0l Throttle Body. Motorized with cable.

If yours looks like that, then follow the instructions in the links
I posted above.

If the wiring checks out, then you might have to replace the Throttle
Body. Used ones at the wreckers are cheaper than new.

Thomas
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Wednesday, April 11th, 2012 AT 3:33 AM
Tiny
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LOoks just like the picture. What makes it motorized?It is more like a rheostat, right?If I disconnect the throttle cable, the motorized throttle does absolutely nothing, right.
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Wednesday, April 11th, 2012 AT 4:42 AM
Tiny
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Hi,

Instead of a separate "idle stabilizer or idle air valve" the ECM adjusts idle via the throttle plate.

You have to look at the throttle closely to see the movement at idle. Look at the little silver
tang at the side of the black plastic piece where the cable loops around.

Thomas
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Wednesday, April 11th, 2012 AT 4:47 AM
Tiny
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O.K. I will look at that. Could that have anything to do with the codes or should I just be resolved to replacing the throttle body?So far I have not seen anything about Tweaking a tang or bending anything or reprogramming anything to make the codes go away. Other than adjusting the throttle cable, there seems to be nothing I can do?
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Wednesday, April 11th, 2012 AT 9:48 PM
Tiny
EXOVCDS
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I have a pdf, but I can't post it here. Exovcds@telus. Net
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Wednesday, April 11th, 2012 AT 11:25 PM
Tiny
EXOVCDS
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Found a pdf to img converter. Images attached.
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Saturday, April 14th, 2012 AT 6:05 PM
Tiny
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4 more.
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Saturday, April 14th, 2012 AT 6:07 PM
Tiny
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Half way there.
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Saturday, April 14th, 2012 AT 6:08 PM
Tiny
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Last few. Blue links in images refer to other documentation / test
procedures.

This should be enough so you can do some testing. A good
wiring diagram would also help. So I'll at least post one of those
as well.
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Saturday, April 14th, 2012 AT 6:11 PM
Tiny
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Wiring diagram. Pages 1 to 4
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Saturday, April 14th, 2012 AT 6:14 PM
Tiny
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Wiring diagram. 5 to 7

As mentioned at the start of the topic. Check wiring, if that checks
out fine, then replace the Throttle Body.

If a used TB does not solve it, try a used ECM.
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Saturday, April 14th, 2012 AT 6:17 PM

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