pulled in from winter storage.
performed HTR redyness TSB 25-001-07
data shows Sensor 2 bank 2 HTR duty pegged to 100% but HTR not drawing power. internal PCM fault.
wiring pined out and double checked all good.
took HTR power from bank one (working) and used in parallel control power to fire a relay to supply power to bank2 2ensor. added a 5th sensor to old bank 2 power wires (originally with out this and additional new code developed)
cleared all and drove 2 drive cycles, no lights yet. time will tell.
freaking signals, hazzards, horn not working any more randomly WTF