Gator_56

I have a 2001 Maxima SE, the A/C fan will not stop blowing and the air coming out of the vents is warm. I pulled the blower motor resistor and changed it to no avail, and I changed the compressor relay switch.

Has anyone run across this problem before?

Discipulus96

Wait, which fan is blowing? The "A/C" fan, as in the radiator cooling fans? Or do you mean the fan inside the cabin? Your question is confusing. Please specify which fan and under which conditions it is blowing when you think it shouldn't be.

Gator_56

Sorry for the confusion... the fan inside my car. If i turn the control to off or 4 or any where in between it blows warm air out of all the vents.

cjandura

iTrader: (3)

Blower motor resistor search young jedi noob

Gator_56

As I put in my original post... "I replaced the blower motor resistor to no avail"

.... Read Obi Wan Kenobi

DennisMik

iTrader: (2)

The way the fan works is that one side is connected to 12 volts when the ignition switch is on and the blower motor switch connects the other side to ground. Exactly how it gets connected to ground is different for auto climate control and manual controls.

When you say blower motor resistor, that part is used on a manual control system. In the manual control system, the switch in the dash can short internally and the fan runs all the time.

If you want to do tests on the switch, follow the proceedure in section HA, pages 167 to 171 of the 2001 FSM.

IF you don't have a FSM, get one here:

http://boredmder.com/FSMs/Nissan/Maxima/

Gator_56

Thanks for the response. I pulled the switch in the dash this afternoon to find it blown... new one is ordered and should be here first of next week.


Would that switch also cause it blow warm air or do you think I will need to charge the system?

DennisMik

iTrader: (2)

I think that when the fan switch is in the off position, the compressor does not run. If that is true, a messed up switch could possibly do that. But I won't swear to it.