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SC300 AEM V1 1100 TPS issue

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Old 05-27-14, 02:19 PM   #1
SliC300
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Default SC300 AEM V1 1100 TPS issue

Alright guys, I've searched for a while now and can't seem to find anything about this particular issue.

So I just installed the Supra TT AEM V1 1100 into my 92 SC300 and I am having a TPS issue. The voltage at the ems when the throttle is all the way closed is around .06V, depending on position, and when WOT the voltage is ~ .22V. I tried changing the TPS as per the suggestion of Alpha, and I got the same results. I checked the continuity at pin 43B on the harness and it checked out. Additionally, I tried turning the TPS by hand out of the TB and the results were the same.

However, when the TPS is disconnected, it reads 5V on AEM ProTuner, which I find very odd, as I would have assumed that this was an open and should therefore be 0V.

The car was automatic with the TRAC if that helps any. I am wondering if there is some other wire that has to be cut or jumped so that the TRAC signal doesn't interfere with the "manual" throttle position.

Thanks in advance guys, this stupid issue is the only thing standing between me and my sweet, sweet boost!
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Old 05-30-14, 04:17 PM   #2
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Weekend bump!!

No one has ran into this issue? Was this posted in the wrong section? Please people I need some answers!
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Old 06-11-14, 10:30 AM   #3
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Would like to know this also, i m having similar issues as well where I press the Gas Pedal and it's not reading any Values and when you unplug the TPS, its still see 5.00 Volts
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Old 06-11-14, 09:22 PM   #4
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Fonz87, I figured out my problem: I cut the 5V reference going to the sensor. I cut it and used it as the MAP reference point, so instead of the TPS getting 5V, it got nothing :/

Just soldered everything back together, and now I have .6V at closed throttle and ~3.7V at WOT.

Hope this helps, and GL
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