Your best bet is to uninstall your Pioneer CD Player. Then re-inspect your power door locks while the car is off. If it works back to normal, then there must be some wiring issues related to your Pioneer CD Player.If the power door locks still cannot function properly, I would suspect you may have some wires related to the power door locks shorting each other. Especially if the 12v meant for your radio sends power to your interior circulation indicator light.It can be tedious work but you would need an ohm meter to test connections with the wiring behind your front panel and perhaps under your dashboard for short circuits along the wires.Good luck!