Radiator Fan NOT Working Xsara Picasso 1.8sx 2003

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Fartblast
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Radiator Fan NOT Working Xsara Picasso 1.8sx 2003

Post by Fartblast »

The engine cooling fan on my 2003 Zara Picasso 1.8sx does not work. I took it for an MOT and they abandoned it when it overheated during the emissions test. Under normal driving conditions it does not overheat. I tested the two fan resistors with my multimeter and both .54 Ohm and .8 Ohm were faulty so I replaced with new ones, but the fan will still not work. When I switch the aircon on, I hear the clutch noise and there is a drop in power so I assume it is trying to work, but again the fan does not kick in. I'm not sure how to test the three green relay boxes and I don't know which fuse controls the fan, so any advice appreciated.

old-picasso-resistors
old-picasso-resistors
picasso-resistor-sockets
picasso-resistor-sockets
Relays
Relays
Engine-Bay-Fuse-Box
Engine-Bay-Fuse-Box
Last edited by Fartblast on 26 Mar 2020, 10:02, edited 4 times in total.

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Paul-R
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Re: Radiator Fan NOT Working Xsara Picasso 1.8sx 2003

Post by Paul-R »

Almost certainly the Maxi fuse has blown - this is what happened to both our old Xsara and Mk1 C5. Unfortunately I can't point you at which one nor even where the fusebox is located!

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white exec
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Re: Radiator Fan NOT Working Xsara Picasso 1.8sx 2003

Post by white exec »

Would be interesting to see the circuit diagram for that one, Marc — a triple relay set AND two resistors ??
Presumably a single fan.

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Re: Radiator Fan NOT Working Xsara Picasso 1.8sx 2003

Post by Fartblast »

Thanks for the replies. I know where the fuse boxes are, just not which one is for the fan as I cant find the information online.
Last edited by Fartblast on 25 Mar 2020, 19:09, edited 2 times in total.

wheeler
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Re: Radiator Fan NOT Working Zara Picasso 1.8sx 2003

Post by wheeler »

The 2 main fuses you are interested in are maxi fuse 1 located underneath the under bonnet fusebox. Also the normal fuse 1 in the under bonnet fusebox.
Does the fan turn freely by hand? does the fan operate if you give it 12v directly on pin 1?
EDIT: I just saw your fusebox pic after i posted at the same time, are you sure this is a 2003 model? that is an earlier non com2000 model fusebox. Do you have the RP number? the changeover was 2001/2002 ish.
Ignore what I said about fuses above as that is for a later model fusebox.
Last edited by wheeler on 25 Mar 2020, 17:45, edited 1 time in total.

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Paul-R
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Re: Radiator Fan NOT Working Xsara Picasso 1.8sx 2003

Post by Paul-R »

wheeler wrote:
25 Mar 2020, 17:39
Does the fan turn freely by hand?
A very good point. The cause of the of all the problems in both cars was the fan had seized up over winter when it wasn't needed.

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Re: Radiator Fan NOT Working Xsara Picasso 1.8sx 2003

Post by Fartblast »

Yes the fan turns freely and I purchsed the car brand new in March 2003. I have only taken off the bonnet cross member, not the bummper so I cant see the 12v feed. What is the RP number?
Picasso-bonnet-crossmember
Picasso-bonnet-crossmember
Last edited by Fartblast on 26 Mar 2020, 10:01, edited 1 time in total.

wheeler
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Re: Radiator Fan NOT Working Xsara Picasso 1.8sx 2003

Post by wheeler »

Need to know the RP number of the car (shown at E on the tyre pressure sticker or sometimes on the back of the interior fusebox cover)
Does it have single or automatic A/C?
Image

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Re: Radiator Fan NOT Working Xsara Picasso 1.8sx 2003

Post by Fartblast »

Aircon is manual, just pus a button on the dash. Only three rows of RP numbers and letters on my car.
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wheeler
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Re: Radiator Fan NOT Working Xsara Picasso 1.8sx 2003

Post by wheeler »

Ok so you car was actually built October 18, 2002. The RP number is the 9475.
Maxi fuses 2 & 3 are the ones you are interested in (middle 2 big fuses in the bottom row of your picture).
If you disconnect both the big resistors & power up pin 3 with 12v this should put the fan motor on full speed to prove the fan is ok.

Fartblast
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Re: Radiator Fan NOT Working Xsara Picasso 1.8sx 2003

Post by Fartblast »

OK many thanks for this info. I will try later this evening or tomorrow and let you know how I get on.

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Re: Radiator Fan NOT Working Xsara Picasso 1.8sx 2003

Post by Fartblast »

I just checked and the fuses look good. Can you tell me the location of pin 3.

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picasso resistor

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Paul-R
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Re: Radiator Fan NOT Working Xsara Picasso 1.8sx 2003

Post by Paul-R »

You say they look good but have you tested them with a meter or test light? Or possibly exchanging them with known good fuses?

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Re: Radiator Fan NOT Working Xsara Picasso 1.8sx 2003

Post by Fartblast »

Paul-R wrote:
25 Mar 2020, 19:04
You say they look good but have you tested them with a meter or test light? Or possibly exchanging them with known good fuses?
No but they are not obviously blown. I will test them tomorrow. Thanks again.

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Re: Radiator Fan NOT Working Xsara Picasso 1.8sx 2003

Post by Hell Razor5543 »

I have had an occasion where the fuse had not blown, but corrosion on the fuse blades and holder clips stopped the rear wiper from working. I plugged/unplugged the fuse a few times and the wiper returned to normal service.