I have p0606 and p0601 codes. Car started off with intermittent stall-no start issues , restart run for a while die then hard to start. tapped on fuel tank and car would start every time. changed fuel pump and car would start, run for 2 sec. die. after cycling the key a couple times would always start and die after 2 sec. would not turn over unless I cycled key twice. I did the 30 min. relearn key trick several times, no luck. sprayed contact cleaner in key slot, car started right up and ran for several mins. then died. replaced key cylinder. retrained key several times can't get car to start. Everyone tells me pcm is shot ,because of codes. I want to first verify proper voltage at pcm first. I do have 5 volt ref. at the key. pcm has 3 harnesses. I would like to back probe there to check for power but I don't know which wire to probe and what voltage I should have. I tried cleaning as many grounds as I could find. Thanks