thanks for the info. now i wonder where i could get a new dist. from. it seems as though everything on this truck is special. bring back the good old days.

 

well it continues, the pcm has been out of the truck since sunday so i could work on ordering a new one (needed the numbers / code for match) pulled the distributor and change the hall sensor (crankshaft position). assembled everything, hooked up the battery and we started. ran for about 15 minutes to warm everything up shut it down and ran koeo tests. still have 111 and 212 codes. cleared them ran the truck and tried again, still returned 111, and 212.
changing the sensor was as easy as pulling the distributor out and saved abunch for cash too, 35.00 vs 146.00 for a new distributor. any ideas.
the good part is it is still running even tho i have the codes, just dont know how long. time to trade it in.

 

still waiting for cardone to send the new pcm, ordered a week ago and they say its not done yet.

 

you cant get live 111 and 212 codes. the 212 must be from CM constant memory. To clear the cm code, pull the jumper wire while the codes are flashing.
111 is no codes Looks like you truck is fixed since it ran 15 minutes.
212 is IDM, check for spout wire grounded when you ran test.
Tim

 

Hey I found this posted by fefarms a while back. Good stuff!!
Tim
--------------------------------
If you get code 212 and there are no other obvious ignition problems, it is possible that the 22K ohm resistor in the harness is broken. The main ignition wire comes off the TFI module, goes to a splice in the harness about halfway back to the PCM. From there it splits three ways. One wire goes to the coil primary negative terminal, another goes to the dash to run the tach. The third leg is a 22K ohm 1/2 watt resistor soldered into the splice. The other end of the resistor goes to the PCM and becomes the "IDM" signal. They put the resistor in the harness to protect the PCM from the high voltage inductive transients as the coil primary is switched by the TFI. The resistor is fragile, and easily broken in half if you try to flex the harness in a zealous search for intermittent shorts or other problems.

The other possibility is that the SPOUT jumper is open or missing. The computer checks that IDM is present with the engine running, and also that spark timing is advanced under the control of SPOUT coming from the computer. Hook up a timing light, rev up the engine, and see if timing advances. If it is stuck on 10 BTDC, SPOUT is not working.

In my experience, a broken resistor results in code 212 and no other adverse symptoms. The computer doesn't seem to use IDM for very much, other than for diagnostics -- checking that the TFI is actually firing the coil and that SPOUT is able to vary ignition timing. The computer's primary input is PIP.

 

ok time to think some more. i now have a new 60 pin breakout box to test the pcm system. have checked all wires, pins, connectors and everything is good. no shorts, and no power where it is not supposed to be, and the grounds are ok. have installed new crackshaft position sensor, new icm, new coil and new pcm. the truck now starts and runs fine, gas mileage appears to be better but am still getting a 212 code when using the code reader.
could this be something that needs to run for sometime to get rid of? i have read while trying to figure this out that the pcm needs approximately 80 cycles of on and off to get consistant. could this be my problem now???? (the pcm is still learning the ignition profile)
thanks for everyones input.

 

Popa Tim

kenjan61 has a 1995 F-250, they do not have the 22K Resistor, and the IDM on a 1995 comes form the ICM pin 3 and goes to the PCM pin 4 and no place else.

I do not know what years the post was talking about but the 1988 were wired that way with the 22K Resistor.

Code 212 (Loss of ignition diagnostic monitor input to powertrain control module or spark output circuit grounded).

This means you have lost the input on pin 4 of the PCM (Circuit 382 [Y/BK WIRE] Ignition Diagnostic Monitor [IDM]). This wire comes from pin 3 of the Ignition Control Module (ICM).


Bill K

 

the direct wire from the ICM to the PCM (382 y/blk) pin three to pin four is fine when checked directly pin to pin and when using the breakout box. the connectors are fine as far as i can see in the plug and the pins are also good. it took almost 2 weeks to get this pcm from cardone, they say it is very rare and i have some special truck. as far as i see it, it is nothing specail at all, just your plain old truck. 1995 f250 4x4 scab, 460, c6 auto with 3:55 gears, the only thing that i have seen different is most have the o/d tranny. I am beginning to think that the only thing special is that it is a lemon, (green so it is a lime)
thanks

 

just a thought, the new stuff came from autozone except for the pcm. anyone think the ICM could be jumk? there is a large price difference between the ford site and autozone. $44.00 vs. 127.00.

 

Yes it is very possible the new one is bad. I saw on another post that someone got two or three bad ones in a row from autozone and then they got one from napa and it fixed the problem.

If you do not mine me asking where did you get your Breakout box and what did you give for it?

Bill K

 

answer to the question.
well not knowing what Alldatadiy was talking about in the dianogstic for this problem, I searched the internet and found OTC makes the box 60 pin breakout, new it sold for $698.00. being that they make a bunch of them for all the different years, (60 pin 80 pin and 104 pin) i did a search on ebay and found one. i bid for a week and ended up with it for 117.55. the guy was actually local to me also, so i meet him and picked it up from him just down the street from my house. it turned out that he worked for a dealership and was cleaning things out.

 

as far as the ICM, i think i will get another one. the truck was dead before i ordered the pcm and while i was waiting for it the last thing i changed was the hall sensor in the dist. then the truck started but still had the error code with my pcm. with all the wiring checking out ok it has to be something with the icm.

 

the funny thing about this is i get a 111 code (system ok) before i get the 212. wonder why i just dont get the 212 by itself. as far as the ICM the napa price is double what i paid at autozone, hope there is a difference.

 

Let us know if it fixes it.

Bill K

 

ok i give up. i am now up to roughly 1000.00 on this problem. installed a new ford ICM today (137.00) and still have the 111 (ok) and 212 (idm mssing)codes. starts and runs.