FridgeFreezer Posted May 29, 2008 Share Posted May 29, 2008 Morning all I'm sat in Tapio's workshop watching the chaos time-efficient build and they need an answer to a question - does anyone have the pinout for an Intermotor 50035 fan switch? The terminals are in-line rather than in a circle like the normal ones. All help appreciated! Quote Link to comment Share on other sites More sharing options...
cipx2 Posted May 29, 2008 Share Posted May 29, 2008 http://forums.lr4x4.com/index.php?showtopic=7438 Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted May 29, 2008 Author Share Posted May 29, 2008 http://forums.lr4x4.com/index.php?showtopic=7438 I found that, read my post again it doesn't have terminals like the X-Switches, it has three in a row like ||| Quote Link to comment Share on other sites More sharing options...
cipx2 Posted May 29, 2008 Share Posted May 29, 2008 It doesn't matter if it has the terminals in row, circle, triangle etc.. Follow the numbers next to the pins. Or get a multimeter and you'll figure it out in less than 30s. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted May 29, 2008 Share Posted May 29, 2008 Pin 1: High speed switch Pin 2: Low speed switch Pin 3: +12V That's from an Audi workshop manual, which I am pretty sure uses this switch... (it cross-refers OK). It does use a thumping great relay as well, I guess you are? Finding out how the switch works with a multimeter when all terminals are open circuit would be fun Hope that helps anyways Fridge... Quote Link to comment Share on other sites More sharing options...
cipx2 Posted May 29, 2008 Share Posted May 29, 2008 That's why I said 30s. I thought it was obvious you need to heat it up with an air gun or by dropping it in someones boiling cup of tea. Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted May 29, 2008 Author Share Posted May 29, 2008 Aologies if this seems a bit fraught, there's about 5 minutes to prep the truck, the sensor is fitted which makes testing a bit tricky and does not have any terminal markings, it has notches in the connector at one end but that's it. Quote Link to comment Share on other sites More sharing options...
muddy_muppet Posted May 29, 2008 Share Posted May 29, 2008 What about checking the resistance between the 3 pins? 1 of them will be connected to the other 2? (This would be the feed I'd have thought). Quote Link to comment Share on other sites More sharing options...
cipx2 Posted May 29, 2008 Share Posted May 29, 2008 There's no resistance between terminals. It's a switch, not a sender. FridgeFreezer, start the engine and heat it up. Have someone keep an eye on the temp gauge (so it doesn't go over 110) and test the switch. Be prepared to directly connect the fans to battery +12V or by shorting the wire terminals together so you can lower the engine temp. You don't really need a multimeter this time, you can use the fans for this. Or let them connect it no matter how and do the tests when you get home (or on your way home). The worst case scenario is one or both fans coming in at the higher temp spec. Tell them to leave the female terminals unplugged in the corresponding plastic holder (or take them out with a pointed tool or small screwdriver). Usually, the pin numbering starts from the pin closer to the key but there's no guarantee on that. Quote Link to comment Share on other sites More sharing options...
Bowie69 Posted May 29, 2008 Share Posted May 29, 2008 Looking from the back of the switch, pimple upwards, the right hand terminal is #3... (refer to my previous post for the other pins) I had to grovel around under my Audi to find this out, so I hope you are grateful Quote Link to comment Share on other sites More sharing options...
FridgeFreezer Posted May 29, 2008 Author Share Posted May 29, 2008 Cheers Bowie, sorted now - just the brakes and a few other bits to go then! Quote Link to comment Share on other sites More sharing options...
muddy_muppet Posted May 29, 2008 Share Posted May 29, 2008 What about checking the resistance between the 3 pins? 1 of them will be connected to the other 2? (This would be the feed I'd have thought). Sorry, was speaking out of context, I meant whilst it was in your (cipx2) suggestion of a cup of tea/hot air gun. Quote Link to comment Share on other sites More sharing options...
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