I know, but the Hi-Scan instructions for transmitter pairing say to remove the key from the ignition. :dunno:Really?
Most ECU's are off with key off. Even a simple scanner won't work for codes.
Just measured the DCT pin with the ignition on and off... 2.3-2.4V at all times. This is confusing because the data link schematic says that it's connected to a 12V pull-up output from the BCM. Code save pin is 5V.
I should try pulling up DCT with a 510Ω resistor and see what happens. I might have tried this already when I was messing with it before.