Cooler Start-Up Control
WARNING: This page is about a different car, the 2002 Isuzu Axiom. However, it is still accessible from the selected car via links, so may be relevant.
When the vehicle is parked in a hot area for an extended period of time, the evaporator becomes hot. When the cooler is turned on, hot air is blown into the vehicle until the evaporator cools down.
The cooler start-up control prevents blower operation until the evaporator is able to provide cool air.