It's been a while since I've looked at the schematic. The first test connecting the supply to the pack connections may be in error. I'll have to look at that part more.
The behavior with shorting the HVC connection looks correct. It should toggle red, then back to orange.
It should quickly change to green, though, and that part definitely has a problem. This is controlled by U1a. You might try measuring the voltage on pins 2 and 3 against charger (-). It's real easy to have your probe tip slip and short the chip, destroying it, so be very careful doing this. Pin 3 should be zero volts. Pin 2 should be near zero, but a few millivolts.
If pin 3 is high, Q2 may have a problem or the EOC disable jumper has continuity.