hi,

got a fiat brava SX 100 1.6 2001
the heater has gone dead on me and nothing comes out . no hot or cold air.
ive checked all the fuses under the steering column there were 3 sets of fuses and ive pulled them all out. and all are ok.

WOT NEXT ?

many thanks inadvance

Do you mean the heater fan isn't working?

the heater inside the car .

none of the controls work hot and cold air .. or even the aircon. nuffin blows out no sound at all.

its getting to be a pain as the weather has changed and i cant demist my front screen. but the rear window heater element works.

any hints before i take it to fiat

As Deck says, if the fan isn't working it won't be blowing any air through, like having it set to 0 all the time.

You'll just have to check through the heater fan circuit and see where the power stops. Could be at the fuse, the switch, the heater fan resistor pack can burn out, it could be the fan or maybe the fan is just stuck with some leaves or something.

I'd check for power going in and out of the heater fan switch, then check for power at the resisitor pack and then the heater fan

ukheman said:

the heater inside the car .

none of the controls work hot and cold air .. or even the aircon. nuffin blows out no sound at all.

its getting to be a pain as the weather has changed and i cant demist my front screen. but the rear window heater element works.

any hints before i take it to fiat

Click to expand...

Hey ukheman, what was the problem with your car?did you fix it? My Brava did the same thing with me today.... What should I do?
Thanx.

Took the car to Fiat, they said it's probably the fan switch, the bad news is that they don't have it and they won't get it untill after the holidays, so I'm stuck for now cos I couldn't find it anywhere else even at the scrappies.... Tough luck it's impossible to drive in the cold without demisting the windshield and glass
Thanxall.

Is it quite a small thing? There are loads of Bravo/as round here so could post it if you were interested as I'm off to the scrappy next week for a few bits

Hi,

I think the heater fan in the bravo is fed with a positive supply from the fuse under the steering column, and the switch grounds (earths) the fan through the resistor pack. Its unlikely all the resistors or all the switch positions have failed, so check that you have the live feed at the fan first (use a multimeter or bulb to check that the live supply is coming to the fan connector plug. If supply is present, then check if the fan will work, by grounding the other wire from the fan (plug it back in and scrape away a small bit of insulation on the wire to get a connection). If no positive supply, there may be an open circuit. You could take a supply across on a wire from the same fan fuse. If you cant do any of this, get a good auto electrician to have a look at it.. dont take it to FIAT cos they usually can't be bothered sorting electrical problems..

Owen.

Thanx for your reply styler, I'm gonna give you more accurate info:I checked all the fuses, they're ok. I'm pretty sure the fan works cos sometimes when I'm driving the heater works normally, then all of a sudden stops, so it sometimes works and sometimes doesn't... Moreover sometimes when the switch is set to 0, the heater starts by itself..... SO I'm sure the fan is ok. What do you think?
Moreover I noticed something pecular: When the heater is working, the temperature button displays the temperature but when the heater stops, the buttons doesn't give any indication. So I think They're someway related...
About what you asked me to do in your post, I didn't quite understand so if you could explain a bit more I'd really apreciate it.
Thanxagain.

Ok, today I went and got a switch from the scrappies.......IT DIDN'T WORK!!
So this is not the problem.... I know for sure that it's not the resistance pack cos I also tried it.... What else is there???? Please someone help.
PS: Thanxalot Helz for your offer, it's very kind of you.
Thanxall.

Today I realised something:
Before I got the car, I had the previous owner change the windshield cos it was in a bad shape... Now whenever it rains my car floor is always wet.... So maybe water is penetrating the car from the windshield which is probably not fitted well and it ruined something behind the glove compartment and that's why the heater is not working....
Am i making sense? Can someone please help me?????
Thanxall.

I had the same problem some time ago.

In MY case the problem was in the stalk (the switch box under the steering wheel). I took it off (needs removing the steering wheel) and opened it. I cleaned the copper elements (+ the bottom copper layer on which they move) and put them back.

Some hints for the one who wants to give it a try:

- Air-bag removal needs special care (I don't have one) !!!
- Before removing anything, check if the wire connectors are OK.
- Stalk box is a bit complicated so remove the parts in some sort of order.
- Do not wipe off the grease from the bottom layer if you don't have smilar.

I hope it helps somebody. Good luck.

Welho, Brava 1.4 S 1998.

welho said:

I had the same problem some time ago.

In MY case the problem was in the stalk (the switch box under the steering wheel). I took it off (needs removing the steering wheel) and opened it. I cleaned the copper elements (+ the bottom copper layer on which they move) and put them back.

Some hints for the one who wants to give it a try:

- Air-bag removal needs special care (I don't have one) !!!
- Before removing anything, check if the wire connectors are OK.
- Stalk box is a bit complicated so remove the parts in some sort of order.
- Do not wipe off the grease from the bottom layer if you don't have smilar.

I hope it helps somebody. Good luck.

Welho, Brava 1.4 S 1998.

Click to expand...

Thanxalot for your reply, my car doesn't have airbags too, can you tell me exactly what you did and what was the part you cleaned? Please help I still haven't managed to make it work!!!!!

When you operate the stalk (put the lights on, etc.), it moves a plastic case back and forward. In the plastic case there are two copper elements which act as a bridge closing or opening circuits. IN MY CASE one of these bridges didn't work (it didn't close the circuit because it was dirty). I cleaned it with a fine sand paper and also stretched the spring a bit which forced this bridge on to the bottom framework.

I found the not-working-bridge by using an ohm-meter. As I operated the stalk (headlights) I followed the position of the briges and checked from the corresponding pins (in the wire connectors) if they worked.

welho said:

When you operate the stalk (put the lights on, etc.), it moves a plastic case back and forward. In the plastic case there are two copper elements which act as a bridge closing or opening circuits. IN MY CASE one of these bridges didn't work (it didn't close the circuit because it was dirty). I cleaned it with a fine sand paper and also stretched the spring a bit which forced this bridge on to the bottom framework.

I found the not-working-bridge by using an ohm-meter. As I operated the stalk (headlights) I followed the position of the briges and checked from the corresponding pins (in the wire connectors) if they worked.

Click to expand...

I'm really sorry man but I didn't exactly understand. Can you please post pictures and tell me exactly how to disassemble the bridge?
Thanxalot.

Unfortunately there are no pictures.

The main idea is that there are many moving parts in the stalk box. You need to check all these parts seperately. There migth be a disconnection, a dirt or a disorder anywhere in there.

"Bridge" is just a piece of metal. For example when you turn the headlights on, this small metal comes between two metal surfaces and closes the circuit. The casing which holds the bridges comes off almost by itself when you open the box. Using a needle you can easily take off them from the casing.

Keep in mind that if you fail to reassemble it properly you may lose your headlights, signal lights and wipers

SAFETY COMES FIRST
If you are not familiar with these kind of devices, I strongly advice you to skip this reparing option. Losing wipers during an overtaking with high speed on a rainy day might be very dangerous.

I really wonder why the heater's power runs through the stalk box

Good luck

Hello,

did you manage to get the heating sorted out yet ? I'm a bit confused by this post since i last checked the forum . Did your auto electrician find anything ?. welho mentions that the supply for the heating/AC is fed through the stalk switches. That sounds rediculous, but being a FIAT it would'nt exactly surprise me either. The aircon diagrams i sent you seem to show the supplies coming directly from the fuses, which would (should) be fed from the ignition switch, and permanent live. Did you or the electrician check to see if the supplies are present at the fuses ?. Also, has anyone got a copy of the schematics from a hayne's manual or similiar ? I'd like to see what's going on here..

Owen.

Hey, I haven't got the time to take it to electrician yet.... I'm not driving it at the moment. I'm pretty pi**ed off from it.
Are you sure the schematics you sent me are for my car? 99 Brava sx100 16V manual?
Thanxalot.

The schematics i sent are from autodata, for the brava/o 1.6 / 1.8. with semi auto aircon. years 97-99 i think. Anyway, they should be quite accurate, but check that the fuses correspond with those in the car owners handbook. If you need to get this sorted, go out and buy a cheap multimeter, and start tracing voltages. best investment you'll ever make

Owen.