ive finally gotten a laptop for datamaster. when i try to record data im not getting any pcm response. ive tried all available com's, when i test on com one it says the aldl cable is working but there is no signal from the pcm. ive checked the 12v source and its working. im not sure what else to check.

 

Same thing is happening to me. I can get tunercat to link up, but not datamaster.