Oh - a final note:
After digging through all the wiring diagrams and fault diagnosis procedures. It appears as if the M/T configuration has cooling fan - 1 with three settings. Off, low-speed and high-speed. Different speeds will be activated based on the cooling system temperature. ie: With aircon off, the fan will be off until a pre-specified temperature, after which it will engage low speed. At another specified temperature, it will engage high speed.
A/T configs only have cooling fan-1 with "off" and "on". Same as above. The fan will be off until a certain cooling temperature is reached, after which it will switch on.
My understanding of it in any case, based on the manual. But don't have time to delve too deeply at the moment... Service manuals are a "rabbits-warren". You start reading the electrical diagrams of the cooling fans, and later on you're digging through the data transfer mechanism of the digital aircon control in the GRX... I should stop reading now, and get back to work...