no tps
#1
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no tps
setting up my ems 1710 with a bmw tps in a 90miata. So Ive been searching for awhile and am still scratching my head. Finally decided to ask for help. Here is what Ive done so far.
I setup the bmw wires per write up here.
https://www.miataturbo.net/megasquir...pnp-faq-12239/
yellow wire --> signal
black wire --> 5v
brown wire --> ground
With that done, i found only 2v output. Found that it was ok aslong as its setup properly.
https://www.miataturbo.net/aem-59/bm...lts-ems-84840/
So now I need to setup the ems. Followed these steps.
https://www.miataturbo.net/aem-59/ae...tps-how-33004/
Now everything is done, when i try to set throttle range, tps voltage sits at 4.96v for min and max. when i press the throttle, no activity on the screeen.
Ok so check the wire.
red wire --> 5v
blk grn wire --> ground
lt grn wht wire --> signal
Back probed the lt grn/wht wire at the ems and reads the same voltage at the tps signal.
This is where my car battery died from koeo and called it a day.
What am i missing? Bad ems?
any help would be much appreciated.
I setup the bmw wires per write up here.
https://www.miataturbo.net/megasquir...pnp-faq-12239/
yellow wire --> signal
black wire --> 5v
brown wire --> ground
With that done, i found only 2v output. Found that it was ok aslong as its setup properly.
https://www.miataturbo.net/aem-59/bm...lts-ems-84840/
So now I need to setup the ems. Followed these steps.
https://www.miataturbo.net/aem-59/ae...tps-how-33004/
Now everything is done, when i try to set throttle range, tps voltage sits at 4.96v for min and max. when i press the throttle, no activity on the screeen.
Ok so check the wire.
red wire --> 5v
blk grn wire --> ground
lt grn wht wire --> signal
Back probed the lt grn/wht wire at the ems and reads the same voltage at the tps signal.
This is where my car battery died from koeo and called it a day.
What am i missing? Bad ems?
any help would be much appreciated.
#3
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iTrader: (2)
Join Date: Dec 2009
Location: San Jose, CA
Posts: 50
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Think I have it figured out But haven't tested yet. The lt grn/ WHT wire is where the factory full throttle open is. Compared the ems pin out to factory and they used a different pin. The factory wire that was used was at 2L while the ems is trying to read 2M which is an open cavity.
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