1994 Geo Prizm Logo

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Posted on Feb 11, 2018

Need a diagram of the Ecu connection for a 1994 geo prizm Lsi. Am at Toyota dealership and they dont have it and could not locate it.Could you make that available online at once please? If I give you the e-mail address to the technician at the dealership, could you e-mail it to him as well?

5 Related Answers

Anonymous

  • 142 Answers
  • Posted on Feb 12, 2009

SOURCE: 1994 GEO Prizm Fuel Guage

You need to replace your fuel sending unit. It is located inside of the gas tank.
Please remember to rate this solution.

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Anonymous

  • 3533 Answers
  • Posted on Mar 20, 2009

SOURCE: I cant find the computer on a '97 Geo Prizm LSI

it normally is up behind the glove box or under the hood you can try autozone.com to see if they have your car listed for diagrams pictures and step by step instructions if your car is not listed then try your local library they have all the car manuals and even copy them for you

Anonymous

  • 1 Answer
  • Posted on Mar 23, 2009

SOURCE: 1993 Geo Prizm Lsi Harmonic Balancer

Yes a harmanic balancer from tha corolla is the same thing. I had to do the same thing with my 95 geo. It works out to be a lot cheaper buying for a toyota than a geo.

Anonymous

  • 1985 Answers
  • Posted on Dec 22, 2009

SOURCE: 1994 Geo Prizm LSI running one day won't crank next day

turns over and crank are the same thing,
so you are saying it does crank over but no start,right?
you need to determine if you have at least 50psi of fuel pressure in fuel rail at reed valve.

Molson02536

Harvey N Tawatao

  • 3854 Answers
  • Posted on Dec 23, 2009

SOURCE: geo prizm stereo radio wiring diagram

1994 Geo Car Stereo Wiring Schematic
Car Radio Battery Constant 12v+ Wire: White
Car Radio Accessory Switched 12v+ Wire: White/Black
Car Radio Ground Wire: Black
Car Radio Illumination Wire: Red/Yellow
Car Stereo Dimmer Wire: Red/Green
Car Stereo Antenna Trigger Wire: N/A
Car Stereo Amp Trigger Wire: N/A
Car Stereo Amplifier Location: N/A
Car Audio Front Speakers Size: N/A
Car Audio Front Speakers Location: N/A
Left Front Speaker Positive Wire (+): White
Left Front Speaker Negative Wire (-): Black/Blue
Right Front Speaker Positive Wire (+): Blue
Right Front Speaker Negative Wire (-): White/Red
Car Audio Rear Speakers Size: N/A
Car Audio Rear Speakers Location: N/A
Left Rear Speaker Positive Wire (+): Light Green
Left Rear Speaker Negative Wire (-): Light Green/Black
Right Rear Speaker Positive Wire (+): Gray
Right Rear Speaker Negative Wire (-): Gray/Black

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I need Toyota geo prizm ecu pin out wire diagram

so learned what it really is congrats
3 engines uses. which one?
ahhhh 1.6L 4AFE it is, TOYOTA (cam belt failure is #1 not ECU)
the service manual is here and all that.
engine and ECU can be swapped and is PnP'
but ECU must match all options on car.(means check carefully)

https://eautorepair.net/Marketing/Default.asp

"It is just Toyota Corolla. Gen 6 to 8. (in GM snake skins (badges)
1989 to 2002 (The last Prizm was built on December 13, 2001) 1990-2002 model years.
In fact, the Corolla and Prizm were made (built) side by side in the NUMMI plant, in Fremont, California, back when......"



or BUY one (nothing is better that the paper book sets)
nada


https://www.ebay.com/sch/i.html?_from=R40&_trksid=p2334524.m570.l1313&_nkw=geo+prizm+service+manual+1995&_sacat=0&LH_TitleDesc=0&_odkw=geo+prizm+service+manual&_osacat=0



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1answer

Orifice location 1994 geo prizm

which one, there are many? the engine?
if yes, engine
which one? 4AFE or 7AFE toyota it is. for sure.

here is a link page, to facts on Prizm

http://www.fixkick.com/PRIZM.html
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What is the location of the ecu for 1990 geo prism?

Should be behind the glovebox or either in the passenger side kick panel.
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Buying a car

the car is really a Toyota, but the real question is did GM move it.
that makes it harder.
http://www.toyotanation.com/forum/16-archived-corolla-threads/9068-geo-prizm-toyota-corolla.html

off all questions ,locations are the hardest.
many books dont say, because the makers love to move parts around.
the only book that gets it correct is the FSM. why not get one.
and keep it with car. so you dont have to get help for every page.
and hark some cars there is no seperate Fuel pump relay.
its part if the ECU main. common on some 1990 Geos.
my first question is why do you need this?

my online page shows?
Fuel pump relay is located at the lower left side of the relay box - fuel injected engine.
i dont trust online , for older cars, they mix, parts up badly (SSDD)
and i look more and its a mix of metro's and nova/s ,trash info.
i cant even find a schematic, which is what i look for first.
to see the relay and now it REALLY works, and not assume i just know.
im looking in toyota online now (Geo docs are iffy, at best GM)
find a real GM GEO used FSM off fleabay.

4A engines, the relay is called C7 "circuit opening relay"
has 5 pins and forms mag. "OR "logic inside.
the relay closes for CRANK "OR" ECU happy.
ECU happy means , spark is ok "AND" engine is running. pin FC on ECU.
now 7A, its the same, i never assume it, i look

found it , this car has no less than 6 Junction boxes. relay and fuse.
4 in engine bay if ABS car.
and 10 relay location drawing.
why not look on line at alldata.com and see them.
JB2 is the box. in engine bay, left strut tower. (usa drivers side)
they have EFI main relay
and one more called engine main, with 5 pins.
so its not even called a fuel pump relay, hard to find.

jb2
facing box.
see top row off relays
and bottom row of fuse.
so left to right is. (not canada , only uSA)
horn--radfan1---EMR---headlight--EFI main,

so EMR is fuel pump.

alldata.com
i found it under toyota corolla, 1993.
if GM does this diffr, i dont know, get a real GM book.



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Does a 1993 geo prizm 1.8L lsi have two temp sensors?

buy the manual. and RTM,
and yes, Air , water, and on a stock car up to 3 coolant sensors.
The ECT runs the ECU. tells ECU coolant temp.
my guess is the coolant gage is dead? RTM
on most 93 car, the Guage has its own sensor, (isolated)

89-02
joint venture, GM/toyota with 3 engine used.
1.8L or 1.6L
toy engine, 4aFE, 7AFE or 4AG
open hood look
or use the GM RPO tag
or Use the VIN to find motor used.
for docs?
ebay
search
Geo Prizm factory service manual, Duh?

http://www.ebay.com/sch/i.html;jsessionid=D19D723C2EDB4A9FE12E7C01C0677129?_sacat=0&_nkw=geo+prizm+shop+manual&_nkwusc=geo+prizm+shop+manaul&_rdc=1
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Factory alarm on 1994 geo prizm

89-02
joint venture, GM/toyota with 3 engine used.
1.8L or 1.6L
toy engine, 4aFE, 7AFE or 4AG
open hood look
or use the GM RPO tag
or Use the VIN to find motor used.
for docs?
ebay
search
Geo Prizm factory service manual, Duh?

http://www.ebay.com/sch/i.html;jsessionid=D19D723C2EDB4A9FE12E7C01C0677129?_sacat=0&_nkw=geo+prizm+shop+manual&_nkwusc=geo+prizm+shop+manaul&_rdc=1

first read this. for your engine, and car.
you will see all its tie in points.
on some cars the ECU is defeated until the alarm (immoblizer)
tells ECU , all is good.
RTM
i do this for many people, and that is how i do it.
i RTM.
0helpful
1answer

I need a picture diagram of a 93 geo prizm pulley system

PRIZM
alldata dot com
pulley? you mean the belt routing, is it V belt or Serp.?
how many belts? (big clue that)
this is a toyota engine 1 of 4 types
the used more than one.
which is yours.
engines options, not many cars have only 1 engine.
so first post the vin or the toy engine name.
or a photo

1.6L all 4L GE and FE, and GE 105 or 130HP.
in 93 the option of
a driver airbag, and a new 1.8-liter 4-cylinder engine optional on LSi trim.

when working on any engine, first ID the engine.
if posting, tell the helper the VIN or the Engine ID>
all GM cars have a RPO tag on the glove box door.
this too, can be decoded, but I can not.
there are the options.
sorry i dont have a PRIZM, there are not that many on the road.
you could join a PRIZM forum. that would make this far more easy.
1helpful
1answer

1994 Geo Prizm LSI running one day won't crank next day

turns over and crank are the same thing,
so you are saying it does crank over but no start,right?
you need to determine if you have at least 50psi of fuel pressure in fuel rail at reed valve.
1helpful
1answer

1993 Geo Prizm Lsi Harmonic Balancer

Yes a harmanic balancer from tha corolla is the same thing. I had to do the same thing with my 95 geo. It works out to be a lot cheaper buying for a toyota than a geo.
Not finding what you are looking for?

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