Cabin fan not working - fuse 14?

[Jordie Barretts sock]

I'm not overly bothered, but the cabin blower isn't working. A quick Google suggests it's fuse 14 labelled 'heater' 15 amp fuse.

Everything else appears OK. Start with the fuse then?

I don't think it's the resistor, because it doesn't work at all. If the resistor is duff then they usually work full blast or not at all.

It's a '98 450 with the push and turn knob.

[Belle427]

14 and 16 have been known to control the fan depending on year, there is another thread running here about the gauges being affected which has a fuse chart posted, may be different to yours though.

[Jordie Barretts sock]

Unlike that chap, all my gauges are working. In fact I think everything is working apart from the blower.

Next time it's out of the garage, I'll rummage in the passenger footwell.

[Stokebloke1]

Hi Jordie,

It was number 14 on mine although my fan is seized..

[Belle427]

Maybe try a quick straight battery 12 volts at the fan connector in the passenger footwell, may get it back into life.

[Jordie Barretts sock]

Mine was working. I've just noticed it isn't. I don't think the motor is seized.

[Steve_D]

That year of car does not use resistors (although they are still there at the fan motor).

It does have a control module which varies the fan speed. It connects via the 'high speed' (Yellow) wire going to the motor connector which you can find high up the side of the footwell above the passengers knee. If you earth this wire the fan should come on full chat. This needs to be tested first with ignition on.

The most common fault here is a burnt connection of the yellow wire to the control module pin B1. Best repair is to bypass pin B1 by connecting the yellow wire directly inside the module.

As above check the motor first as you don't want to be taking the dash top off unless you have to.

Steve

[Jordie Barretts sock]

Thanks for that Steve. I'll do that first, but as luck would have it, I had the dash top off a couple of years ago and I never bolted it back down. Just velcro!