Technical How do you remove the dashboard & replace heater fan switch
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Technical How do you remove the dashboard & replace heater fan switch
if you only want to replace the heater switch it might be the same sort of method as on a fiat Stilo?
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How To... | Heater Control Fan Switch Replacement
Remove the Radio Unit Unscrew and Remove Ashtray/Trim panel below the heater controls. you should now be able to see 3 tabs that clip the front panel onto the white plastic body of the heater controls. there is also 2 of these tabs underneath...
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chevychase
Member
It's a real pain in the buttock. You really don't want to drop the dash if you can help it, a world more pain, it's all one piece and involves removing the Speedo unit, an steering wheel etc. see the link below. Fine watchmakers screwdriver to release the tab on the connector through the gap is the way, but it will take you ages and lots of frustration. But it can be done.
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heat fan switch | FIAT Punto (Mk2/2b)
Heater fan switch Hi, was wondering someone could help. Removed centre console as per guide hoping to replace heater fan switch. When I tried to replace it I found the cable to short and couldn't find away of releasing it, any advice would be appreciated. Thanks.
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chevychase
Member
The connectors have locking levers that need to be depressed to remove. They are orientated to the centre of the switch so not easy to get to. If you can't pull anymore slack forward you might have to cut some of the white plastic to get a tool in there. See the switch picture to see what you're dealing with. Your best bet is tackling it from the right hand side as you look at it.
Marimars
Member
Hi
Been struggling to get this bugger out for a while so thanks for the guide, I have the switch loose but I can't get it out, the cable is too short, it comes out the full length of the switch but not far enough to get to the back.
Just in case I'm misunderstanding, I need to disconnect the electrical connectors by using a small screwdriver with the switch not fully out?
Dremmel and hack saw at the ready
Been struggling to get this bugger out for a while so thanks for the guide, I have the switch loose but I can't get it out, the cable is too short, it comes out the full length of the switch but not far enough to get to the back.
Just in case I'm misunderstanding, I need to disconnect the electrical connectors by using a small screwdriver with the switch not fully out?
Dremmel and hack saw at the ready
chevychase
Member
It's a pain in the ass, but you have to depress the locking levers in the middle of the connectors, whilst pulling them out. I'm afraid if you have no more wire slack you have to get creative and brutal. All the white plastic is hidden when assembled back together so don't worry too much about damage. Work on the tightest connector first. Once it's released you may have more slack to get to the second. The big on is easiest to get a tool to. Drill a hole or 2 in the white plastic above. Just make sure no important cables or wires are there. The like a keyhole surgeon you can use something like an Allen key to push the tab down and a flat blade screwdriver to pry the connector out. It will be tight as it hasn't moved in 20 yrs. But when it starts to go it'll come easy. Then tackle the smaller one. You might have to take some of the white away on the right hand side and use the bent end of an Allen key to hook round and press the tab on that one.
Keep us updated of any progress. Pics would be good as well so we can see.
Keep us updated of any progress. Pics would be good as well so we can see.
Marimars
Member
Marimars
Member
And after brutality with the the multi tool, the switch is goodBrilliant thanks will give it a go now
, so fuse and relay good, new resistor pack, new fan still fubaAttachments
![20241126_121213[1].jpg](https://cdn.fiatforum.com/data/attachments/434/434253-d7876a8991f8fb9ab1d2cd96ec0adb6a.jpg)
chevychase
Member
Wow, brutal! Slightly more room made than I was inferring but it'll all be hidden.
Just read your symptoms on your other thread. You might have power to the switch but it needs to go to ground after the fan motor to complete the circuit. I'd bet you have a melted ground connector after the motor causing a high resistance. The voltage and thus power is/was being developed dropped over that connector causing it to heat up until it's no longer providing good continuity. Do you have a multimeter to hand?
Just read your symptoms on your other thread. You might have power to the switch but it needs to go to ground after the fan motor to complete the circuit. I'd bet you have a melted ground connector after the motor causing a high resistance. The voltage and thus power is/was being developed dropped over that connector causing it to heat up until it's no longer providing good continuity. Do you have a multimeter to hand?
chevychase
Member
With ignition switch on. Check for voltage at pin 1 of the motor plug. If present, reconnect and check for voltage at pin 5 of the big switch connector. If present check for good ground by doing resistance check pin 1 of the big switch connector to a known earth point such as the door strap bolts. Should be negligible resistance, if it is high that's your problem. Then you just got to follow the wire from the switch to find the bad connection.
Marimars
Member
Thanks for that, I have 12v motor plug to chassis earth, what are terminals in switch? 1-5 left to right looking from the back roound side up??
Marimars
Member
For now I am connecting the 12v at motor plug with switch and running new earth, any suggestions for nearby earthing point, there is a bolt on top of the tunnel by handbrake that works?
chevychase
Member
I don't know 
one end will be 1 the other will be 5 check both ends.
The wire diagram indicates the pin 1 wire (ground) is black and pin 5 (supply) should be grey/black same as coming out from the motor connector.
one end will be 1 the other will be 5 check both ends.The wire diagram indicates the pin 1 wire (ground) is black and pin 5 (supply) should be grey/black same as coming out from the motor connector.
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chevychase
Member
If you're running a new earth make sure the wire gauge is good and chunky and any structural bolt will be ok to go to. You could even go a bit more pro and crimp on a ring tongue. But the crimps you get from Halfords etc. can be iffy you have to really make sure they can't pull off.
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Marimars
Member
Thanks for all the help, looks like a duff earth, confirmed by none of the heater control bulbs light up and they share common earth (found wiring diagram on here) .Wired in separate switch and earthed to body so have fan on max speed. For now may be forever
, not going to rip dash out to find the breakchevychase
Member
Cool glad you have some airflow now. I'm sure you're sick of it now, but if the urge to fix it to full functioning gets to you check this old guide. 100 to 1 this is the connector that's knackered, no need to strip the dash. Just cut the black wires either side of the connector and join together with crimp, choc block etc.
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Mk2 - My sidelights come on instead of my interior fan!!!
Hello, A fairly common problem on the Punto Mk2 is the interior fan not working when the fan control nob is turned. If instead, your sidelights come on, then this guide is for you!! This is a 10 min job to fix, and all you will require is a...
www.fiatforum.com
Marimars
Member
Thanks, I saw that post but can't see that type of connector, will have another look, thanks againCool glad you have some airflow now. I'm sure you're sick of it now, but if the urge to fix it to full functioning gets to you check this old guide. 100 to 1 this is the connector that's knackered, no need to strip the dash. Just cut the black wires either side of the connector and join together with crimp, choc block etc.
Mk2 - My sidelights come on instead of my interior fan!!!
Hello, A fairly common problem on the Punto Mk2 is the interior fan not working when the fan control nob is turned. If instead, your sidelights come on, then this guide is for you!! This is a 10 min job to fix, and all you will require is a...
