DBW PPS too slow to respond

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Gpro
Posts: 25
Joined: Tue Oct 08, 2013 1:10 am

DBW PPS too slow to respond

Post by Gpro »

Hi,

I have an issue where my pedal position sensor takes too long to react from 100% to 0% when lifting off. This causes my car to over-rev when shifting gears due to throttle body not closing fast enough thereby delaying 'TPSClosed' state for overrun to kick in.

I must stress the issue here isn't the TPS but the PPS. I have attached a log, take a look at the last 6 ppsA and ppsB spikes. It takes 120+ miliseconds to go from 100% to zero which is too long. On a stock mechanical setup it was 40ms.

The car is a Supra mk4 running DBW on a Syvecs S7 Plus.

Any help or guidance would be much appreciated.
Attachments
PPS-Syvecs.JPG
PPS-Syvecs.JPG (62.33 KiB) Viewed 646 times
2022-02-10 10-20-11 plus 0h00m00s S7#15020.SD
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amdisthebest
Posts: 9
Joined: Thu Jan 10, 2019 8:14 pm

Re: DBW PPS too slow to respond

Post by amdisthebest »

Can you also log the AN0X channels the PPSA/B are attached to and/or ppsAV/ppsBV?

What is the pedal from?
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