I agree it really is hard to describe the events accurately. At this point my plan of attack is new sensor, and get link to connect. I just deem it very un-plausible for it to connect one minute and then completely crap out...the next....just dosnt seem right. & It isnt i know...the exact same thing with the wideband. Ill try a new sensor calibrate it and all. Ill see if i can check the DLC connector again. I got my lap top to recognize link and got the com ports to work.
According to the forums online, (i dont have acces to the actual ECM link forums), but from the trouble shooting page the trouble code im getting says that the program has send a signal to the ECU...however it is not receiving a signal back. Now this leads me to want to check the DLC ecu communication pin. It says to check and make sure it pulses...what in the world is pulses...between 1-5V between system voltage and ground voltage some body define Pulse..or just up and down basically? Problem with that is a bad connection could result in the same pattern though...
http://www.ecmtuning.com/wiki/diagport-12pin
Question: When checking continuty between pins 1 and 10 back to the ecu, i assue i can unplug the connector and just back probe both the harness and connector to check for continuity. If i not wrong this test checks for open's between the connector and ecu plug....thats all fine and dandy, but it will be nearly impossible to find an open without a wiring diagram. I have absolutely no idea where the wires run and if any other components are on that circuit that could be open shorted...ect does that make any sense? I guess start with obvious things that could ove gotten messed up...
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