XJ40 ( XJ81 ) 1986 - 1994

Rear fog lights not working

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Old Apr 26, 2023 | 02:04 AM
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Panarabica's Avatar
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From: Heidelberg
Default Rear fog lights not working

Hi there,

both of my rear fog lights are not working, bulbs checked and not getting 12V. Fuses are all Ok, no lightning symbol in the dash, however bulb symbol is there. Front fogs work both. Any ideas of what this could be?

Br

Robert
 
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Old Apr 26, 2023 | 05:37 AM
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Those plug in just inside where the wires go through the rear pan, maybe they are unplugged. Are the bulb sockets good? On there rear there is a dirty place. Also suspect wiring out the back of the housings .
 
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Old May 3, 2023 | 09:43 AM
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Hi Jerry,

Wiring looks to be ok and is connected to the control modules. No power coming out of those, so I swapped a module out of my DD6. Still nothing. It looks as if it is not getting any signal. Strange thing is that it applies to both sides, which makes me think that it is the switch. Fuse wise both sides go via the respective fuse box. A cold soldier point on both fog light fuses would be a surprise.
A bit lost at the moment with this problem to be honest.
 
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Old May 3, 2023 | 01:32 PM
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I would lean toward the switch too. Try a simple jumper wire past it and see if they come on.
 
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Old May 5, 2023 | 12:22 AM
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Strange thing is that if I flip the switch on the console even the light goes on showing that it is "on". I have thought about it and will probably run a wire from the front fog lights to the back. Should make the rear one work, but I presume I will still get the bulb symbol.
 
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