pcm wire diagram

['97-2.3L-ranger]

i hooked up a tach on my tuck run it to the pcm and found out pin 48 is the tach wire. i hooked it up no problem but no reaction on my tach. i spent an hour looking for pcm wire diagrams and found on close to mine 104 pin diagram but it was reversed like the top was bottom and bootom was top. so like alwasy the color code on wire should answer my problem right ....wrong on top of each other is a brownish tan both with yellow strips. i cant help but laugh a what the odds are. can some one email me a pcm diagram for the 97 2.3L ranger? i cant find any online and the one at http:/www.explorerfourm.com/fourms/showthread.php?t=162444 doent look right becuz the empty pins dont match and the like i said it upside down. mabe some one could just tell me how the ran that green tach wire into the tach be cus at this point i just want it to work if you have on to email me please do at jordanstrickler@inbox.com subject pcm thanks

[D94R]

On my 94 it was a Tan with Yellow stripe wire. Its the Ignition Monitor (IDM) wire in the harness. Pin 4 for me.

Your link is this:
http://www.explorerforum.com/forums/showthread.php?t=162444


I'll check out the diagram there and see if I can help you out any.




EDIT: I think I know what your problem is with being backwords. It depends on what connector they are showing in relation to the numbering. If its the computer, or the actual harness connector one or the other will appear 'backwords' depending on which side is referenced.

Anyhow, if you look at the harness connector it should be labeled I think with what pins are in what row. You're right, PIN 48 for you should be the tach signal. If you're finding it is upside down and backwords make sure you reference the pin numbers on the connector rather than how the diagram shows it.

['97-2.3L-ranger]

i dont see pin 4 is it bottom row 4 from left i dont see idm on that picture either

imagine my pins are like this 79 on that picture is 1
104 on that picture is 26

i know on the connector is says so by telling me the row start number and ther row end number. i cant explain it well.

i made a picture with paint but i cant post it on here it wont let me i can email it to you if i knew you email adress

['97-2.3L-ranger]

pin 48 is what it says i just cant figure it out. i'm just going to connect it to the ignition.

[D94R]

Right, i confirmed in my post it is pin 48 for you. If you understand the row start numbers and end numbers then I'm confused what your problem really is? Are you not able to find pin 48? Disregard how that picture shows you and just look at your connector.


Any how, are you trying to come right off the ECU to pick up the signal? If so thats wrong, just find the wire somewhere and splice into it.

['97-2.3L-ranger]

IT WONT WORK i now know i have the correct pin my connections are good i cant say why i'm just going to go another rout. thanks for your help.

['97-2.3L-ranger]

hey is pin 48 on your truck second to bottom row five spots from right

[nagelandy55]

This is out of my manual, its for a 96 so your's will be identical.

http://i209.photobucket.com/albums/bb308/nagelandy55/pcm.jpg

http://i209.photobucket.com/albums/bb308/nagelandy55/PCMclear.jpg

In this picture pin 48 is on the right hand side, second row from the top, 5th one in going right to left.

['97-2.3L-ranger]

i understand what your saying the whole problem is that the pin in your diagram show 1-whatever right to left top to bottom my connector shows right to left bottom to top. and the empty spaces aka not used are not matching mine thats the whole problem

[D94R]

I have to say this before my head explodes. I can no longer follow what the heck you're saying anymore. You need to focus on slowing your typing and trying to make it a little sense.

I think you're post should be reading like this:

I understand what you are saying. The whole problem is that the pin locations in the above diagram show PIN1 to whatever as LEFT to RIGHT, top to bottom. My connector shows RIGHT to LEFT, bottom to top. And the empty spaces (non used PINS) are not matching my connector, that's the whole problem.

Is that right?





Now, if that's correct, I must ask. When you say the empty PINs don't match, is that after you oreintate your connector to match that of the diagram? If you think about it, if yours is right to left, bottom to top, and the diagram is opposite, then do this. Take your connector and flip it around, and rotate it 180*. You'll be looking at the oposite side of the connector now, but it will be the same orientation as the chart, and all the wiring should be the same, and numbered the same as the diagram. From there find the correct pin, then go from there.


I think you're making this harder than it is.

['97-2.3L-ranger]

okay forget everything i've said before picture this the 48 and 74 pins are both tanishbrown and yellow strip. i think i know whats up they "ford put the connector sleve on upside down meaning the pins are correct in location but the sleve is on to where the numbers are wrong places. i'm going to take a picture of it so you can see it. my nexed move will be to take what apears to be 74 witch i think is really 48. if that doesn't work i need to know what color on the coil is the negative. thanks for staying with me on this.

[nagelandy55]

Yes a pic would be very good.

And PLEASE watch your grammar and spelling, don't want to sound like an english teacher but reading your stuff is honestly confusing, like D94R said.

Thanks.

[pongorulz]

just markin this for future reference