Cabin blower motor stuck on full

[exec406]

Hi

I turned up the cabin blower motor to full this morning and it's sticking on full.

When I turn it down on the dash control the fan graphic displays as if it's turned off but it's still on full.

I had a look at fuse no. 2. under the fascia a 5amp fuse described as ventilation controls. When I pulled this out fan is still on full and the fuse does not look blown.

Anyone had any experience of this? Is the blower motor gone? The heating & air con controls etc sill work fine.

Thanks for any help.

Edit: Car is a 2003 2.2 Exec.

[Doggy]

According to Haynes, (fingers crossed, no sniggering).
There's a 'blower control module', (which if not integral with blower is probably very close by).
This receives power via fuse F40,(passenger fusebox). it's connected directly to the blower motor and receives two control signals from the Heater panel, which in turn is connected to all the goodies via the Vehicle Area Network.
As you are able to turn the fan off & screen says it's stopped, I think that bit's OK, problem likely to be blower control module. Suggest trying the following:
1. Remove F40, fan should stop. (It's just possible it might 'unlatch' itself & behave thereafter).
2. If you can locate the 6-pin black connector on the heater panel, disconnect this - I think blower should not run if blower control module OK.
3 If blower still runs I would change blower control module, if not try BSI reset. (not sure how to do this, but I believe there are some earlier posts covering it.

Some of the others may have experienced this & be able to give you the answer, but if not try the above & let us know how you get on.

[exec406]

Hi

Thanks for that info.

I will give that a go and reply back.

Cheers.

[exec406]

Hi

I located that fuse you mentioned. In the 2.2HDi / 2003 it's an engine compartment fuse (slot no. 18) Also linked to wiper slow speed mode.

I took the fuse out and waited a bit before I put the fuse back in. Blower was still on full after that. I then tried your other suggestion with no joy, so I will get a new blower control module, which costs around £52.00 from the main dealer (edit: main dealer parts man mentioned this was a common fault)

It will be a few days before I get this fitted, in the meantime I've kept that fuse out, OK that means no blower but I can live for that for a short while. Is it OK to leave this fuse out? It's one of the few fuses in the engine fuse box that is not a maxi fuse (maxi fuses are listed as providing additional protection for the electrical system) As it's not a maxi fuse, it would seem to me to be OK do this.

Thanks for your help.

[Doggy]

There is certainly some evidence of other blower control module failures, so I hope that's the answer.
Your 2003 example is different to mine & I've only got a 99-02 version of Haynes to go on, so apologies for giving the wrong fuse info, but I'm glad to see it didn't stop you reaching a conclusion. Afraid it's difficult to say what else the fuse protects, but I assume you will have checked everything important still operates.
As you intend to swap the blower module, you could take it out now & put the fuse back in, if that doesn't involve too much additional hassle.
Hope it's sorted soon.
Eric

[exec406]

Hi thanks for your reply.

I'll leave that fuse in and live with the blower on full until I get the control module changed. I could get fogged up otherwise at this time of year.

[neildavies]

My control module went a couple of months ago, it's lcoated directly behind the centre console, can access it from the passenger footwell. Takes about 5 minutes to change.

Unfortunately, takes more than 5 minutes to earn the £50 Peugeot charge for it.

[chrisr]

Hi,
the blower on my car has recently decided to work intermittently.Just when there was freezing weather!
Is this likely to be the blower control module as well.
Regards.

[jasper5]

Changed my heater control module last week, It's the most common fault of all connected with the heater.I've changed dozens on all sorts of cars over the years.Stingy Peugeot dealers wouldn't give me any trade discount because I wanted it as a VOR order.

The most common symptom is blower only working on full speed.

[mjb]

Changed my heater control module last week, It's the most common fault of all connected with the heater

Not on 406s it's not. We have dodgy wiring on the motor itself (causing carbon deposits on the positive terminal preventing the motor from operating) which takes number 1 spot. The control module's a fairly rare fault usually limited to D9s.

[chrisr]

Hi,
I have noted all of the replies and I am a little confused.
My blower works sometimes on start up and sometimes not but if it does start it will carry on working until the ignition is switched off.
It can go for days without working and then work.
It doesn't kick in and start working if it has not started at engine start up.
Any ideas?

[chrisr]

Hi,
I have noted all of the replies and I am a little confused.
My blower works sometimes on start up and sometimes not but if it does start it will carry on working until the ignition is switched off.
It can go for days without working and then work.
It doesn't kick in and start working if it has not started at engine start up.
Any ideas?

[jasper5]

Ah well!

Now let me see.....how may of these have I changed? Oh! sod it, too many to count.

[mjb]

Now let me see.....how may of these have I changed? Oh! sod it, too many to count.

too many 406 modules to count?

Now lets see, in the past 12 months I've had to fix a burnt out motor wire on all three 406s I've had my hands on, and in the last 2 years I bet there's been about another 10+ on this forum.

[puggy]

Hi,
I have noted all of the replies and I am a little confused.
My blower works sometimes on start up and sometimes not but if it does start it will carry on working until the ignition is switched off.
It can go for days without working and then work.
It doesn't kick in and start working if it has not started at engine start up.
Any ideas?

the next time you start it and it doesn't kick in while the engine is running try this, with the
engine still running wiggle the key about and see if you can hear the blower kick in and
out cos it can be caused by dodgy wire in ignition barrel .