just after the 0v side of each of theses sensors
map
iat
tps
for the
map sensor is it 10 g/y on ecu side
iat sensor is it 3L g ecu side
tps sensor is it 3f or 3i un sure but guessing its 3i
on the ecu it has arrows pointing away from ecu what does that represent ?
any help would be good thanks
(http://i1199.photobucket.com/albums/aa474/Imitek/Mobile%20Uploads/Screenshot_2014-04-06-15-38-25.png)
(http://i1199.photobucket.com/albums/aa474/Imitek/Mobile%20Uploads/Screenshot_2014-04-06-15-38-43.png)
is the br/b all 0v on ecu am i looking at this corectly
Hi Mate,
The >> indicates connector.
For Map
B/LG looks like a grounded shield 0V . 10 gy is the voltage signal to ecu.
IAT
wont have a 0v as a resistor dropping voltage from source to signal.
TPS.
Double pot so no ov that i can see. Need the rest of the drawings to be sure.
Br/B looks like a 12 v source.
(http://i1199.photobucket.com/albums/aa474/Imitek/Mobile%20Uploads/Screenshot_2014-04-06-17-23-35.png)
thats the clearest i can get it
my only problem is to get them sensors powerd up correctly
i am only after the 0v pinouts from ecu due to thats all that stands in my way from runing standalone
for some reason when stock ecu is unplugd only them sensors are down so im guessing the stock ecu was only using the 0v for them sensors
running motec piggyback at mo
Thats better yes ! leave it with me having a look now BR/b is connected to shield so maybe 0v. ill get back to you need my magnifying glass! lol
Have you got p31 on link to original?
need 0>31 and 0>14 bud.
(http://i1199.photobucket.com/albums/aa474/Imitek/Mobile%20Uploads/Screenshot_2014-04-06-20-23-36.png)
(http://i1199.photobucket.com/albums/aa474/Imitek/Mobile%20Uploads/Screenshot_2014-04-06-20-24-16.png)
i would send u the full manual but its 40meg i cant send that unless u got drop box
cant even find the download link online
found the link its the second link
called 1994 Mazda RX7 Wiring Diagram(color) (30MB)
http://www.rx7club.com/3rd-generation-specific-1993-2002-16/94-fsms-available-download-449950/ (http://www.rx7club.com/3rd-generation-specific-1993-2002-16/94-fsms-available-download-449950/)
Hi Mate,
Looked at drawings and these 3 devices are analogue inputs to pcm (ecu) so they dont require a 0v negative to work. They change a 12v source across a 0 to 12 v range 0>31 looks to be a positive signal from ecu that feeds these sensor but dont know what a thermo fuel sensor is? On the motec what are you trying todo? and connect these to?
Mrs has put a film on so i will print out and have a another look tomoz mate as its out of focus on the link and hurting my eyes!!!
Quote from: boosted;876913Mrs has put a film on so i will print out and have a another look tomoz mate as its out of focus on the link and hurting my eyes!!!
haaaaa yea sorry man its the best i can get it im on phone
but basicly my standard ecu is piggybacked to m2r
and i think its just the 0v or grounds from them sensors missing
when i go to diagnose mode on motec the
iat tps and map sensors are not powerd up but im getting crank and injectors and evrything els i was hopeing that all 3 sensors were linked to 1 line so i can put it to motec
also the motec has the 0v missing out of it
car just cranks no start with stock ecu unpluged
(http://i1199.photobucket.com/albums/aa474/Imitek/Mobile%20Uploads/Screenshot_2014-04-06-11-33-35.png)
ooooooooo my god i am so blind i just see it now i think they are all 0v
and they are all connected to ecu pin 4D in the middle
i was just following the >>31 that was connected to dash pannel and >>14 thats connected to shielded wire for coils
and thinking to my self
how can this be possible it has to go back to ecu or ground
so just looked a bit longger at it and see the little devil 4d br/b
this is the 2nd time i have over looked somthing so simple im going to check it first
with meter make sure its 0v then snip and connect to motec see if the sensors are powerd up threw diagnostics
will report back
Yes i see what your saying as its conected to the coil shield. so ecu is grounding it. Meter check to be sure. also check that fuel sensor thermo thing is neg as well as connected to 4d br/b.
Good luck.
right got it going on motec the 4d was the 0v but also come across another problem the negitive side of the crank sensors were also in the stock ecu
so used pin 27 on motec 0v and conected both 4d and crank sensor( - side)
but still had starting isues due to ether crank sensor wire in engine bay or the sensor its self had issues had to keep moving loom to get signal
ether way its running bit crap but running
this is the errors i was talking about
(http://i1199.photobucket.com/albums/aa474/Imitek/Mobile%20Uploads/20140408_141210.jpg)
tomaro i will rip the loom out and put fresh wire in and take off the extra stuff not used
thanks for your help so far :)
will be back with more findings or problems lol
Cool glad you got it sorted ! I looked at the rx8 wiring which is very very similiar and the equivalent wire is 4U and is Mazda kindly marked it ground at the PCM! Ive ran seperate earths and linked them all after my rewire just to be sure. Keep me posted as im going piggy back next year so all good info.
got loom out and taged the used stuff
pritty much all the conectors are broken or the wires are all got cracks exposing wire
so will need to order new set of plugs
only tps, iat, 4x injrctor, 2x water, iacv, air temp, and 2xcrank conectors
i no tripoint sell the but does any 1 no of a local suplier (http://i1199.photobucket.com/albums/aa474/Imitek/Mobile%20Uploads/20140409_120912.jpg)
(http://i1199.photobucket.com/albums/aa474/Imitek/Mobile%20Uploads/20140409_131427.jpg)