az4x4runner

I jumpered my diagnostic terminals today and my check engine light flashed a two-digit code 14 (x..xxxx).

Code 14: IGNITION SIGNAL--NO "IGF" SIGNAL TO ECU

From what I understand there is a lack of Ignition Feedback to the ECU.

Does anybody know what might cause this or how to diagnose what may be causing it?

Thanks,
Bryan

az4x4runner

ah well, I figure.. hey, the thing always starts and doesn't stop 'til I want it to... can't be too bad, eh?

881stGenRunner

bump, i need help with this too...

881stGenRunner

MudHippy

You may need to replace your ignitor coil.

See page EG2-195 from the FSM troubleshoot section here. It tells you step-by-step how to determine exactly where the problem is using a voltmeter.

Targetnut

IGF (I Got Fire) is the ignition comfirmation signal from the igniter to the ECM

If the IGF signal is lost for 6 ignition firing events (3 revolutions)The ECM shuts off the injectors.

My suggestion would be to clear the codes, then drive around and see if they come back.

thook

This I have recently found to be a neat method to have under the toolbelt. It's like taking an accupuncture reading on the system. "Pin pointing" the problem.

dj darkfader

im getting the same code. i have a 95 4runner 3vze. it sat for a long tiime after headgaskets went out twice. just put a new motor in it and its running like a turd. poor throttle response and barely makes it up a small hill. 14 is the only code im getting, can anyone make any suggestions. also how would i clear the codes?

toyota4x4907

Did you replace the ignition coil(s)? To clear codes either pull the EFI fuse or disconnect the battery for like 30 seconds.

CC_yota

I'm encountering the same problem after my 4Runner sat for a couple months while I was doing some head work.

The thing that seems weird is that the code doesn't show up at start up. It only happens after I driven probably 100 ft. From what I've read the ingiter isn't a piece that is prone to intermittent failure. Once it's done it's done.

I messed around with mine a little today. I checked the distributor which was well within spec, I also checked for voltage at the ECM from the igniter. Now, I know to check the IGF signal a lab scope is needed but, it's not something I have readily available so I used my DVOM. I got a reading of approx .5V which I assume is a reference signal. And, I got .86V from the IGT wire. Seems to me the igniter is working.

Could it possibly be the distibutor?

I don't think it's the coil as it's only a couple years old, but I'm gonna test it in the morning and see what I find.

CC_yota

Turns out is was the coil

drkblu4runner

im getting code 14 now. and one have any experience with the code? no misfire. maybe lack of power tho.... could it be the coil?

drkblu4runner

distributor and coil test correct from meter

1styota4X4

had a similar problem on my buddies runner and we are still trying to track the gremlin. Tested everything under the sun at the ECU and the part...took forever. My last guess is the little resistor in the silver box on the passenger fenderwell have not tested couldnt find a test for it. Gonna try replacing it once im out by his house and see if it makes any difference.

drkblu4runner

think the box your talking about is the igniter and ther is a circut board in there.
i have replaced the igniter and coil b4 with one brom a junk yard... it fixed my last misfire, has been running good for a year now but still has this code that only comes up after a bit of driving

1988 4Runner 127

My 88 4runner will run for a few sec then die. it will idle fine for those few sec. The only code im getting is 14. I am lost.

TRDevelopment

Im bringing this back from the dead! Im having the same problem with my 88 4runner (3vze) that I just rebuilt the motor on. With an external source of fuel (brake cleaner to the throttle body) it will start. But it does not start by itself, the injectors are not triggering. I verified this using a niod light. Can anybody give me any pointers.

Mecha Strike

I'm adding my piece since I also had the same issue, this thread lead me to my solution.

Checked the specs, came back as it should, part was fine. It started, but stumbled so often. Idle did not stay constant either.

Turns out it was the wire from the Coil to the Dizy. The protective rubber insulation was shot. A spark kept jumping from the wire to a section of the MAS. Which I assume effected the airflow, causing the stumble..
Runs great now.
Hope this helps.

az4x4runner

Thanks for the update. I never posted my outcome because after clearing the code it never returned. 13 and a half years later and I still have the same coil and igniter. Maybe it was moisture, or gremlins.

ZARTT

Turns out it was the wire from the Coil to the Dizy. The protective rubber insulation was shot. A spark kept jumping from the wire to a section of the MAS. Which I assume effected the airflow, causing the stumble..

Hi:
Wrong assumption.
If the spark is grounding out to the MAF assembly, that means it is not getting to the distributor to be distributed to the plugs.
Therefore the stumble occurs.
Did not affect the airflow at all.
Art.