OBD11 connector not working. Need help

[modit]

Had a starting problem with my '01 Mountaineer yesterday. It Started fine cold, but after warm up it would not restart. I managed to get it started and back in my driveway, to not be able to restart it.
I hooked up my OBD11 scanner and tried to pull codes, but was not able to get a sync. I worked with it a while and was able to get some codes (later found it was in "Simulate Mode"). So last night I was chasing down info on the 12 codes I saw.
I went back out today to try to isolate and still had issues getting codes. After getting the truck started, I still could not get a good read on codes. I hooked the computer up to my wife's Fiat and Walla - Read the Fiat and I was able to get all the real time stats with no trouble. Back to the Mountaineer, and I could not get a read.
Come to find out, the "Simulate Mode" only gave a sample code of what the display looks like. It had me chasing all kinds of unrelated crap.
Now , I still cannot get the plug to read on the Mountaineer. I checked the wiring under the dash, and see it goes into the loom. Is there anywhere I can look for a bad connection? Or is this going to go directly to the PCM. I'm not looking forward to changing out a PCM....

 

[BustedKnuckles24]

Check the fuses. The OBD-II port is powered. Battery voltage should be on Pin 16. My 2000 Explorer powers the port through the cig lighter fuse, but your Merc may be different.

 

[modit]

Thanks. I will check that tomorrow

 

[2000StreetRod]

which code reader?

Has your code reader ever worked on your Mountaineer? Before replacing your PCM I suggest trying your code reader on another Explorer/Mountaineer about the same year as yours. I recall some code readers were incompatible with certain years of Explorers/Mountaineers.

 

[modit]

I bought it about a year and a half ago when I gave my daughter my handheld one for her Sport Trac (she lives out of town). I hooked it up to my wife's Chrysler T&C van when I got it and I am pretty sure I had it on my Mountaineer to test it out too. It is a standard OBD11 plug with a USB on the other end. I did have some issues getting it to register on a COM port in the computer, but once that was done it reads the our FIAT just fine.
I am using ScanTool.net v1.13 for Windows. I got the plug and software from Ebay for a song. Looking at the "About" screen I see that I can get updates for it so I will be looking to see if there is a newer version.