Fan went out.. or something

Kahuna

So my fan stopped workin on all speeds today.. Before it wouldn't work on 1, now all speeds won't.. What is the cause?

stephen

bump for an answer. mine currently does not work on 1......

Eagle Beagle

disconnect the plug, hot-wire from there ...

then you know

Kahuna

wasn't too clear before, this is for that cabin air system.

bam-bam

Rule of thumb:
Doesn't work on some speeds, but does on others? Resistor or switch.

Doesn't work at all? blower motor.

Switch is easy enough to check. As EB said, check for line voltage out at each position. ( I think that's what he said!) If you've got battery volts from the switch in the position in question, check the wiring by seeing if you've got same voltage to the resistor plug. Got it there? Check output voltage. The resistor drops voltage to vary fan speed. High is full power-12V or whatever battery voltage is. Other speeds will be incrementally lower. example:
low 9VDC
2 10VDC
3 11VDC
HI 12 VDC
I'm pulling those figures out of the air, but you get the idea.

Kahuna, you said no fan at all? Run a jumper to the fan motor, just hotwire it. You'll know quick if it's any good.

bam-bam

... or do what we call "troubleshoot with known good part". I would first try a resistor on either of your cars, if they were given to me for repair. Just from experience, resistors fail first.

Eagle Beagle

it is possible to get to behind the switch,
and if you know how to disconnect the connector

it's at the garage right now, otherwise,
i would have taken
some pix, but ey... NOT

[---]     <-----CLIP position
         M     <----- position MAIN
---|---|---|    <----CONNECTOR SCHEMATIC
 6                <------6 position AIRCO

1. attach ONE thick wire to M[/*:m:1gvpomz8]
2. connect the other end ... one at a time[/*:m:1gvpomz8]
3. with remaining position, your fan
   will blow respectively 1,2,3,4
   hence, M and 6 does not activate fan[/*:m:1gvpomz8]

connecting M and 6 will (a.) light airco-light, pushing
the aircobutton (b.) activates aircosystem

so basically you have to connect two wires attached at M
for test purposes
one for the fan and the other one (M to 6) for the aircosystem

if it does not work on the dash on 1
a. switch
b. lubricate fan spindle,axle,hub,shaft
c. resistor
A , B and C in no particular order

: )

Eagle Beagle

resistors fail first

yeah, resistance is futile,
...you will be assimilated