Should the chip be lowering the voltage on the LPC points even when not enabled?
With chip completely disconnected, voltages on LPC match what they should be -- 3.3v for most points. With chip attached (via wires from chip points to LPC points) the voltages drop to anywhere from 1.45 to 2.5 for the points that were 3.3v (except for 3.3v and 5v power points, which stay correct).
Pin 1, for some reason, is 1.45 as opposed to the .2 the diagnostics in the tutorial section say it should be.
Chip doesn't seem to be enabling properly, either. With L1 connected, I don't get the orange LED when holding power for 2 seconds to boot with chip enabled. I also don't get the Superfro error messages, only the regular MS ones.
However, enabling the chip definitely has an effect -- with chip presumably enabled (by holding power for 2 seconds, or by grounding BT so it is "always on"), I get error code 12 (DVD), while with chip disabled or disconnected I get error code 16, which I guess means that with the chip disabled, the box gets "past" the DVD problem and instead halts on the dashboard problem (because I have modified dash on the hard drive).