Should the fan in the roof be on all the time ? Even when you first turn on the ignition without the engine running?

 

What is the voltage of the fan current?

 

 

Thanks

 

 

John

I think it runs when the ignition is on even if the engine is off.

Hi John,

 

I cleaned mine up yesterday (never realized it wasn't working)and yes Bilky is right :)

 

Vijay

Cant get mine to run, anyone have a voltmeter to check to current to the fan, I checked mine, appeared to be only 5 volts, but that doesnt seem right, I will have to recheck it.

 

John

Hi John,

 

I cleaned mine up yesterday (never realized it wasn't working)and yes Bilky is right :)

 

Vijay

 

How do you get at it without scratching/wrecking the trim

How do you get at it without scratching/wrecking the trim

 

 

The trim just snaps down :confused: and pushes back up.

 

John

http://www.twinturbo.net/ttnetfaq/FAQpages/tempfan.html

I have rechecked the voltage to the roof fan, it is definately 5 volts, does this seam right. I have tried to trace it in the wiring diagram, I cannot see any evidence of a reduction to 5 volts.

 

Can anyone help me on this ? Should it be 5 or 12

volts?

 

Thanks

 

John

Hi John,

 

looking at the supply connecter, the pins are:

 

top = -

bottom, left to right = 12v, -, 5v.

 

Does that help?

 

Vijay

Hi John,

 

looking at the supply connecter, the pins are:

 

top = -

bottom, left to right = 12v, -, 5v.

 

Does that help?

 

Vijay

 

Thanks Vijay............that should give me everything I need, I must have just got one reading (the 5 volt one) and thought it was the only one.

 

Cheers

 

John

don't know if this is of any help:

 

http://www.300zx.co.uk/cgi-bin/manual.cgi?list=ha&dir=&config=&refresh=&direction=forward&scale=0&cycle=off&slide=105&design=default&total=168

 

http://www.300zx.co.uk/cgi-bin/manual.cgi?list=ha&dir=&config=&refresh=&direction=forward&scale=0&cycle=off&slide=140&design=default&total=168

 

http://www.300zx.co.uk/cgi-bin/manual.cgi?list=ha&dir=&config=&refresh=&direction=forward&scale=0&cycle=off&slide=141&design=default&total=168

don't know if this is of any help:

 

http://www.300zx.co.uk/cgi-bin/manual.cgi?list=ha&dir=&config=&refresh=&direction=forward&scale=0&cycle=off&slide=105&design=default&total=168

 

http://www.300zx.co.uk/cgi-bin/manual.cgi?list=ha&dir=&config=&refresh=&direction=forward&scale=0&cycle=off&slide=140&design=default&total=168

 

http://www.300zx.co.uk/cgi-bin/manual.cgi?list=ha&dir=&config=&refresh=&direction=forward&scale=0&cycle=off&slide=141&design=default&total=168

 

Thats great Vijay, thanks very much, I should be able to diagnose it now.

 

Cheers

 

John

The trim just snaps down :confused: and pushes back up.

 

John

 

Thanks. I'm in shock that something on our cars could be this simple :o

lol didnt even know i had a fan in the roof!!!!!

lol didnt even know i had a fan in the roof!!!!!

 

There is a sensor and fan in the panel where the map lights are. There are also sensors in the vents. The sensors react to interior temperatures, and open and close vents as necessary to maintain cabin temperature.

 

John

Oooooooh ! very flash, didn't know it even existed.