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1

The A/C circuit is fairly complicated on the Civic and includes a bunch of sensors and switches. Since you can ground the relay coil and the A/C works you can rule out a couple of things like the compressor clutch fuse, relay and wiring to the compressor clutch. Obviously the ECM isn't grounding the relay so let's start there and work backwards. I'll assume ...


1

On the pre-LCI (06-08, I believe) e90 3 series, the rings are illuminated by a bulb which is below the headlights. The rings have a beveled edge at the bottom where light shines into and illuminates them. The bulbs on these are annoying to replace, requiring removal of the fender liner to reach them. On yours, the post-LCI e90(or 1 or 2), they moved the ...


2

Going from very simple first principles, just try and eliminate possible causes: First, look at the bulb itself. Even partially removing it should let you see whether it lights. If not, swap the left and right bulbs - does the problem follow the bulb? If it does, replace the bulb. If it's not the bulb, it's something wrong with the ring itself - perhaps ...



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