bklf7

Doing a swap into an 87 Toyota with a 22re. Donor is from a 97 m/t 4Runner. I'm having a hard time getting the fc wire to go to ground. Does anybody know what tells it to go to ground? If I ground the cor ground wire the truck runs fine with no codes. I've tested the cor and it is within spec. Been messing with this for a long time and just can't figure it out. Any advice on things to check would be very appreciated.

-burzum-

So assuming you have the FC wire from your 22re COR going to the FC contact of the ECM, the only thing that I can think of is to double check that your connections at the ECM. make sure you Wired up the STA terminal which is i believe what triggers the FC terminal to ground out.

bklf7

I have my sta wire hooked up to the heavier black wire that is from the 22re wire harness under the passenger side dash. Then a third wire that goes out to the starter. I have the green wire from the cor that use to go out to the maf hooked up to my fc wire yes.

-burzum-

The fc wire (green or green/yellow) goes from the COR to the ECU "terminal FC". Not to the MAF. It goes to the VAFM on the 22re and 3vze. Not so on the 3.4. Double check your diagrams.

bklf7

Right that's what I meant. I cut that wire that went to the vafm at the cor and ran it down to the fc (g/y) wire at the ecm

-burzum-

Make sure your batt terminal has power with key off and B+ with key on. make sure your IGSW terminal has power with key on. Also have you confirmed your FC terminal has voltage at key on? To do this leave everything connected and backprobe the connector with a sewing needle or somthing, dont try and measure the pin on the dissconnected connector. If all the above is good then i would try a known good COR or ECU.

bklf7

I haven't tried back probing the fc terminal for 12v so I will try that.

bklf7

I've got 12v by back probing the connector at the ecu. I've tested the cor and it's with spec. Batt terminal has constant power. +b has power with key on. And right now still trying to figure out what are the IGSW wires. Can I assume since it runs when I ground the fc wire to the body that the igsw wires are hooked up right?

bklf7

If it's easier send me an email and I can give you my cell number and maybe talk or text . My email is bklf7@yahoo.com

-burzum-

IGSW is a terminal of the ECM that tells the ECM when the ignition is switched to IG2. Im not sure but being that this is when the fuel pump activates on 3rd gens that may be a trigger. I'm not sureoft the exact trigger for FC and was thinking it could just be a crossed wire or some such. If you are positive all your wiring is correct and checked for correct voltages I would have to say the ECM may be suspect, or perhaps the ECU has a bad ground itself.

bklf7

Looking at the ewd's all the ign wires are in the harness that go to the motor and are not wires that I splice into. I thought the wires I was working with were from conn e9 which were batt,w,act,ac1,sp1,4wd,sta,+B,sdl, and bk.

-burzum-

Mine was a 2002 and needed wires from e9 e10 and e11 connectors, but I was using an auto harness for a standard. I'll have a look at my notes tommorow and tell you everything I hooked up in my swap.

bklf7

This is the ewd I'm working from