Fan Control Amp.
WARNING: This page is about a different car, the 2008 Nissan Maxima. However, it is still accessible from the selected car via links, so may be relevant.
The fan control amplifier is located on the cooling unit. The fan control amp. receives a gate voltage from the unified meter and A/C amp. to steplessly maintain the blower fan motor voltage in the 5 to 12 volt range (approx.).