missing releys

[jon-jon]

Hello
Im trying to start a 3s-fe engine and i have a problem
there are missing thinks that i dont know what they are


can any one help me by :
* telling me wich of them is important to start the engine ? or show me any picture of this box full
( i dont care about lights - turn lamps - glass cleaning & heater & other motors )
* giving me a link for a 3S-FE wiring diagram

At a sign on vehicle wrote : 3s-fe -87 * sv21

my english are not very good so forgive me for any mistakes
Thanks

[Mike Gerber]

You can go over to the Camry forum over at AutomotiveForums.com and download a Toyota factory service manual there for free. The manuals are stickied there at the top. Download the generation 2 manual. It will have a generation 2 wiring diagram in it.

Mike

[jon-jon]

i found the manual and now is clearly
Thanks a lot Mike

[Mike Gerber]

Originally Posted by jon-jon

i found the manual and now is clearly
Thanks a lot Mike

You're welccome.

Mike

[jon-jon]

Somehow a plug is cutted , im trying to find the cable of the fuel pump and
i need to know one information

When the key is turned at ON (lock - ACC -ON - - Start) is the pump working for a few seconds ?
If you know or you can test it by hear your camry please let me know

[white90dx]

The fuel pump is powered only when the key is in the start position or the AFM flap is open. Either one of these things will turn on the "Circuit Opening Relay" that should be located in the harness near the ECU.

When the key is turned to the "On" position without starting the car, the fuel pump does not prime with the Camry 3s-fe.

-Charlie

[jon-jon]

Thanks for your answers ,
i see you are not agree :/
csaxon are you sure this happents on 3S-fe ?
white90dx what is the ? AFM flap ? is throttle ?

if white90dx is rigth i think i find the cable

[white90dx]

AFM = Air flow meter. It is the box with the flap inside that measures the amount of air that is going into the engine on the Camry/Celica 3s-fe (and many other Toyota motors from the '80s and '90s). It should be attached to the top half of the airbox. When the flap is slightly open or more, a switch internally keeps the fuel pump on via the circuit opening relay. The circuit opening relay also recieves power when the key is in the "start" position.

The throttle body and throttle cable do not control the fuel pump power in any way.

-Charlie

PS. You can also power the fuel pump (temporarily to check things) by connecting the "FP" and "B+" connections on the diagnostics connector.

[jon-jon]

Thank you very much Charlie , very interensting informations

In there must be the AFM


and thoose are connections you are talkning about


am i right ?

[white90dx]

Yes, both are correct.

The engine will not run without a working AFM (green arrow) and fuel problems and circuit opening relay problems can be debugged using the connection you showed in the diagnostic plug.

-Charlie

[jon-jon]

its ok whith the fuel pump cable , i found it
now im trying to find why its not have spark , this looks more difficult :/

any opinions are welcome

[Mike Gerber]

These engines had a tendency to have the coil go bad on them after many miles. The coil is located inside the distributor. I would check that first for a no spark condition. To do that you will need a digital volt/ohmeter and the specs from the manual.

Mike

[jon-jon]

Hi Mike
you mean this ?


what i have to check here

[Mike Gerber]

Somewhere in the manual you should find the specs for the ignition coil itself. It will tell you what the resistance should be in ohms and what specific terminals to test. In the newer manuals it's in section IG. I'm not sure about the generation 2 manual.

Mike

[jon-jon]

there was a few days with bad weather this is why i late
today finaly i see spark , it was a ground point forgoted :/

i will try next days to stat it , i have to find new fuel pump

John