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Fridge not working via 13-pin electricsViews : 1506 Replies : 3Users Viewing This Thread : |
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Aug 17th, 2008, 13:13 | #1 |
Junior Member
Last Online: Jul 28th, 2022 19:03
Join Date: Sep 2006
Location: Nr. Doncaster
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Fridge not working via 13-pin electrics
Hi,
I have a Volvo XC90 with a genuine Volvo tow bar with 13-pin electrics (and a Volvo supplied 13-pin to 2 x 7-pin Y-lead). The problem I have is that my fridge doesn't work on 12V when towing (this should use pins 10 & 11). I have checked all the obvious things (connections, fuses etc) and everything seems to be in order. I have also checked the wiring of the Y-lead and it's as expected too. Having just done some testing with my multimeter (via the 13-pin socket on the car, to exclude any issues with the Y-lead) I have found the following:
As far as I'm aware pin 10 should be paired with its own earth (pin 11). Having looked at the Volvo installation instructions here it actually states (on the last page) that pin 11 is not used, which matches with my findings. This seems to indicate that Volvo have not adopted the ISO 11446 standard correctly (see here). So my fridge doesn't work when traveling :-( Has anyone else experienced problems with their fridges when towing or have any ideas? Cheers Ian |
Aug 17th, 2008, 14:53 | #2 |
Speed freak
Last Online: Apr 3rd, 2020 22:04
Join Date: Nov 2003
Location: Yorkshire
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When you fit a 13pin onto bigger cars there is 2 spare wires that arn't clipped into block connecter, one of them gets taped back out of way and other connects to one of other wires to make fridge or charging (whatever way your caravans wired up) work,
I think the wires put to earth to make a second earth in what will be your grey socket to make the in your case fridge work, The connecter depending on what year XC you have will either be on driver side at rear behind panel just plugged in to a connecter (early models upto 04) or will be on passenger side plugged into trailer module (later models 05on) it shouldn't be hard to miss all wires in block connecter will be white with numbers on them and should corrispond with number in 13pin on towbar
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Aug 17th, 2008, 14:58 | #3 |
Experienced Member
Last Online: Today 11:44
Join Date: Jun 2007
Location: L/H side
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Yes for some reason Volvo do not wire up the fridge as standard on their tow electrics...
If you earth the not used pin 11 to the earth point on the earth bolt on the rear member with a ring terminal the fridge should work ...
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My comments are only based on my opinions and vast experience . |
Aug 17th, 2008, 17:50 | #4 |
Junior Member
Last Online: Jul 28th, 2022 19:03
Join Date: Sep 2006
Location: Nr. Doncaster
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Thanks guys
Thanks Rooster & Clan that's very useful information....
I've found the 2 unconnected wires and will connect the pin 11 cable to a convenient earth point. Many thanks again :-) |
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