Low Coolant Temperature Starting Control
WARNING: This page is about a different car, the 2015 Nissan Murano. However, it is still accessible from the selected car via links, so may be relevant.
If the engine coolant temperature is 56°C (133°F) or less, to prevent a cold discharged air flow, A/C auto amp. suspends front blower motor activation for the maximum 150 seconds depending on target air mix door (front) opening angle. After this, front blower motor control signal is increased gradually, and front blower motor is activated.