When the ac/heater/defrost fan is turned on, the engine shuts off. What's wrong? on 2006 Nissan Altima

This happens when driving at any speed.

Asked by for the 2006 Nissan Altima
Does it restart? What other symptoms? What does it do at idle in park and you turn on the A/C?
The car will restart only if the fan is off. If the car is in idle/park and the fan is turned on, the engine will turn off. These are the only symptoms.
No noise? Does the A/C compressor come on? ANY non-factory wiring , that you know of?
No on all.
I'm sorry , but just to clarify , you could drive all day long , as long as you don't turn on the interior blower motor?
That's right.