Hey fellas. I really need your help here. My truck has been sitting for entirely too long. Even for a FORD ! I haven't been able to start it for a month now. I can't get a spark from the ignition coils to the plug wires.

It's an 89 Ranger 2.3L EEC-VI DistributorLESS Ignition System. Dual coil packs are both new and working properly. New control module. Fuel pump works perfectly. Have done numerous testing of relays and for shorts. I have extracted the engine codes: 15 and 212

15 is EEC processor ROM test failed.
212 is Loss of Ignition Diagnostic Monitor (IDM) input to ECA/SPOUT circuit grounded

I am not quite positive about the 212 code.
Using my Analog meter the sweeps were in this pattern: II II I II II

As I turn the key the starter cranks the engine, but no spark! I do not believe its the Crank Position Sensor (Or at least i hope not). It is a little difficult to get to it. Besides, it worked fine before: .......
The whole senario started when the secondary igition coil was not firing while the engine was running. I replaced the coil. no change. Then i removed the DIS module to have it tested. It passed the test and i put it back on. I have never been able to start the truck since.

I am using the basic Haynes manual which has been usful to a point. But now i think i need some experiential help.

What are the codes REALLY pointing to ? Do i need a new Electronic Control Assembly?? I would appreciate any well thought out guidence to help fix this truck and get it back on the road.

Thanks, Xoryx

 

That's what I thought when I was reading the middle of your post. Try taking it out and have it tested at the same place where you took the DIS module. I have this little personal problem with the phrase "It worked before" when it pertains to electrical parts. The next time you turn on a light in the house and the bulb burns out remember that it worked fine the last time!
. I'm sure that you got that. Let us know what you find out about the crank sensor.

 

Thanks Dealford. Its not the Crank position sensor.

How about explaining the codes ???

Xoryx

 

Hey Xoryx,
I answered this same post, but not as explicid, in the 4 banger section! Check it out, under DIS problems!

_______________________________________________
‘90 Ranger XLT: 2.3L, EEC-IV, EFI, DIS, 2wd, Mazda 5sp

 

Ok. will do.

 

Please..... anyone else with a brilliant idea about how to solve this mystery ... reply


xoryx

 

I think you are mis-reading the codes, you never get a 2 and 3 digit code from the same PCM. I have the SOP in the tech info post. If you need the pinpoint test fro a code just let me know.

 

Hi Ken00,

As always, thank you much for your input!
Big brother is always watching!
________________________________________________
‘90 Ranger XLT: 2.3L, EEC-IV, EFI, DIS, 2wd, Mazda 5sp

 

Ken00

I am having a difficult time understanding what you are talking about. I am new to this electronic stuff when it come to automobiles. So, tell me what is a PCM and an SOP .

I would certianly appreciate your help pinpointing the problem using the codes. I went to the TECH ARTICLES page, but did not find what you were refering to.

[QUOTE] Originally posted by Ken00
" I think you are mis-reading the codes, you never get a 2 and 3 digit code from the same PCM. I have the SOP in the tech info post. If you need the pinpoint test fro a code just let me know."

Yesterday I tested the Continuity between 3 wires on the adapter plug on the top of the DIS module and the coresponding wires that go to the EEC computer.

the results: Ig/off Ig/On
- gray wire 12.98 14.17
- gy/orange .4 .4
- yel/Lg .4 .6

I'm still testing. I'd like to test the continuity of all the wires ( bot & top) on the DIS module to where they originate to see if there is a short of some kind. Am i waisting my time ? i don't know

please help !


Xoryx

 

Sorry about that. PCM is the powertrain control module (computer) and SOP is standard operating procedure (procedure). The link in the tech info post is call "pulling the EEC-IV codes, check it out.