Hello,
I am new here. Trying to get some advice on repairing the AC of my S40'01. Well, my mechanic has given up on me for the repair and to prevent spending hefty $$ to replace complete modules, here I am.
The fault description is simple:- At the AC Blower ****, no matter 0 --> 9 is selected, it is at full blast ofair under the condition that the key position is at ACC or IGNITION ON.
Is there anyone out there with this similar problem? Or the Volvo folks can assist in some way or other.

On the bright side, I was advised by some friends, that the AC ballast driver module which consists of 2 main components, a Power Transistor & a ???? (Diode? Thermistor?) component, if replaced, the mentioned problem may go away. Attached 2 pix of the AC driver module.

Appreciate if someone can tell me the ???? component with a part number & manufacturer. I have figured out the Power Transistor and got it replaced.

Cheers all,
JM






[IMG]local://upfiles/13206/F0C0C825387E4AD5AAC73387FDF437E6.jpg[/IMG]

[IMG]local://upfiles/13206/C71CB64D617C453D866C1E799515888B.jpg[/IMG]

 

Kind of funny but most problems I've run across consist of the blower not working at all! Yours runs wide open all the time? That resistor you pictured fixed a problem I had with the blower not working at all. A dirty cabin air filter killed it due to low airflow not cooling it sufficiently. Dealer part for about $90.

Have you had the recall fix done for the blower motor?

Also, if you select defrost and have the blower on auto it will automatically select high speed. If you do not have the defrost selected and the recall has been done and the resistor been replaced then I would look to the fan switch itself.

 

My 2004 S40 hasthe same problem. I would like to know more about the "recall fix" you mentioned. Where can I look upthis and any other recalls.

 

I did a google search for S40 recalls and found several mentioned on several sites. Basically, the dealer will add a pre-made wiring harness that adds a resistor to the connection between the blower and the car. If you remove the cover on the blower (pax footwell area) and see an extra wiring harness (6" or so long) between the connection from the car and the blower connection then you have it. You can feel the resistor (and see it's outline) under the wiring harness outer sheath.

 

I called Palm Springs Volvo to discuss the problem and possibility of a recall. They looked up my car by VIN and said I had no open recall items to service. A service technician was good enough to discuss the matter and agreed that a new resistor was the most common fix for this problem if the car was a 2000-early 2004, which mine is. After the mid year model change, a bracket or harness is the problem, which sounds like what "Hudini" described.

 

I think I confused everyone. The Fan Speed Controller Module (aka blower resistor pictured above) and the recall wiring harness fix are 2 different things. The recall wiring harness was to fix a specific problem where your interior glass could fog up and the defroster stopped working which is a dangerous situation. It would follow that only specific years were affected. Just not sure which years. I do know my 2001 has the extra wiring harness due to the recall. When my blower motor quit working, I first suspected the recall had not been done. However, it turned out to be the blower resistor at fault.

 

Well it's deja vu all over again. Seems this is a rather common problem; the Fan Speed Controller Module causing the fan either to blow full blast or to not blow at all. Has anyone tried to replace this piece of circuitry in what looks like a heat sink? I'm thinking it is just a transistor or diode with a resistor.

 

I haven't replaced mine yet. I removed it to see if it had a burnt appearance like the one in the thumbnail photo (it does not). Palm Springs Volvo quoted $93.33 for part #30864189. After my 10% VCOA discount it will be $84.00. I checked with www.myswedishparts.com for $74.65. After they applied $10 shipping, it's $84.00. So I'll by mine from Mike at the dealer.

And unlike other forum members, I like my dealer parts guys. They're great.

 

My dealer parts guy is very nice. It's the prices he charges me that casues concern.

 

Same here; parts and service people are very nice but the prices they charge areridiculous.

 

Okay I replaced the resistor (as pictured above) and that has fixed the fan problem. Ahh heat again. It's not easy getting that Fan Speed Controller out of the air box. I had to remove the two nuts holding the steel of the dash to the body of the car just to get enough room to pull that device out.

 

Hi everyone, im new to this forum and volvos as well. On my friends 03 S40, the blower is not working at all ( 0 ----> 9). So its the opposite problem of ****. So what I am confused about is what the problem is? Is it a relay i was reading about on another topic? or is it the Fan Speed Controller Module? Any help would be really appriciated.

Thanks,
dave

 

Mine was not working either. A new blower resistor (Fan Speed Controller Module) fixed me right up. Cost about $90 from the dealer. Replace the cabin air filter while your under there. They get very dirty and block airflow across the resistor which causes them to overheat.

You can test the blower motor by unhooking the power from the car to the blower motor and hooking 12v and a ground to the blower motor connector. If it runs you know it's the blower resistor.

 

my 2001 S60 AC blower turns on when my car is off. it is intermittent but seems to do it when it is hitting the 100 degree mark outside. it will turn off on its own and or when i turn the car on and reset the fan control.
might the fix described in this thread be a possible fix for me as well?

i did read this for an 02 s60

http://new.volvocars.com/ownersdocs/...0/02s60_03.htm

under Pg54 last statement.


thanks

victor

 

I don't think you have anything to fix. The fan turns on to prevent condensation build-up (and resulting mold).

 

These 2000 - 2002 cars often suffer the issues of the fan blowing intermittantly, or fully on all the time, which leads to complete failure. This below is the best info Ive seen - helped me fix my 2002 S40 for £2, yes two English pounds. Thanks to the orginal poster called AndyS40, from volvoforums.org.uk. This is describing changing just the round transistor off the resistor pack. Full thread here...w.w.w. volvoforums.org.uk/showthread.php?p=545394 with pics.




Hello,

Just had exactly the same problem myself but after a bit of digging found out the following.

Rather than buy a new unit get the resistor part number 2n3055 £1.98 at Maplin in the UK. Radio Shack also do one.

Take out the part as listed above, if however you do not fancy drilling a hole, the metal bar underneath the glove box has a lip on it that can be straightened with pliers to allow easier access to the top screw. Also if you wedge a flat bladed screw driver between the lip and the panel this will enable you to get the Phillips screwdriver up a lot easier.

If you look to your right, you will see the cabin filter housing, unclip remove filter and give it a clean since you have it to bits anyway.

To remove the resistor undo the 2 bolts and prise off gently, watch the grease.
Remove the 2 wires, they are just push fit.
Replace the 2 bolts
Reconnect the wires ensuring a good connection and test, mine took an agonising 10 seconds to work.
Replace all parts
Bend the lip back in to place.
Replace the Glove box.

Go for a drive to test, to allow Air Con chance to get up to operating conditions.

 

Personally never had the problem, but apparently it is common.
How to below:

http://s40concepts.net/forum/index.p...c3bc967af43c14