Re: Check Engine light

"pipedown" <pipedown@[EMAIL PROTECTED]
> wrote in message 
news:mumdnaDwSeqvoa_VnZ2dnUVZ_hadnZ2d@[EMAIL PROTECTED]
>
>
>>>>>
>>>>>
>>>>
>>>> I looked this morning.  Fuse 10 spot is unoccupied and the sticker
next 
>>>> to the fuse panel says #10 is for the rear brake towing option.  I 
>>>> suspect that diagram only applies to the 83 model.  I have the EVTM 
>>>> published by ford and nothing like the first diagram is included, the

>>>> remaining diagrams match the EVTM very well.  With no captions on the

>>>> diagrams its partly guesswork.  The engine is EFI and the controller
is 
>>>> marked ECC IV.
>>>>
>>>> Can't hurt to try a fuse in #10 but I have little hope it will lead
to 
>>>> a 1 minute fix.
>>>>
>>>
>>> My mistake, I thought you had an 83 Ranger.
>>>
>>>
>> My mistake again, the diagram covers up to the 1990 Ranger/Bronco II.
>>
>>
>>
>>
>>
>
> So now I am perplexed.  I pulled the dash and checked the bulb, it was 
> good and powered from the high side same as a few other lights that do 
> work like the check oil lamp.  Then I identified the wire (pink/lt
green) 
> and traced it back into the engine compartment to the first connector. 
I 
> get good continuity to that connector.  The wire color and lamp match
the 
> EVTM for the 1993 Explorer up to that point
>
> Now the crazy part, the mate to that connector has no wire in that pin 
> location, no pin contact and the outside is plugged up so it was never 
> there, not just broken.  Furthermore, there is no PK/LG wire at the ECC
or 
> the self test connector as it would be if it continued to agree with the

> 93 diagram.
>
> Pin 17 of the ECC which should have that wire has a tan/red wire that 
> leads to the self test connector same pin but I don't know if simply 
> connecting those nodes will result in the check engine lamp working or 
> just burning out the pin.
>
> I'll advise the owner to go back to the smog check place and try to
prove 
> there is no lamp.  I bet that flees like a lead balloon.  Maybe she can 
> call and verify first.  Given that I can't find any verified diagram 
> showing the lamp, it might not actually be implemented.  Can anyone 
> conform or deny that?  Anyone own a 1988 ford truck?
>

Why don't you just tie it in to another lamp, say the oil pressure, and
call 
it good?