not to go off-topic, but where did you find this one?
i've looked all around trying to figure out where the PCM reads the ambient temperature from.. found nothing
I got one of them fancy mirrors installed at the dealer and it has a compass and outside temperature readout on it. I'm not sure if there is a sensor already on the car they're reading or one that came with the mirror.
I have known other vehicles (chryslers) to have an ambient temp sensor under the battery.
Hope this helps.
Mike