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10-16-2005, 06:30 PM
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88 Prelude heater/vent controls
I cant seem to get the push button switches that control the defroster, AC, vent, etc to work. I pulled the dash apart and everything is plugged in. I didnt try a multimeter to see if there is voltage to the plug though. The blower fan works but I cannot get air out of anything but the defroster vent. The floor and dash vent controls do not work. Does anybody by chance know where a fuse might be located on these cars or where I could start looking for a problem?
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10-16-2005, 07:28 PM
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My 88 accord ac coil shorted and opened the fuse.It was close to the end of summer so I just unplugged my ac compressor and replaced the open fuse.I think your prelude is the same.
Look for an open fuse and replace it.If it opens as soon as the ac is turned on,that is where the short is. I think it is dash fuse box number 18.Also remember whenever you turn on the defrost the ac will turn on too. Last edited by redlightning; 10-16-2005 at 07:34 PM.
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10-16-2005, 07:38 PM
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I disconnected and bypassed the AC compressor because the bearings are shot and it was throwing belts.
The only circuits listed on the fuse panel are rear def/relay, cooling fan, tail lights, sun roof, signals, alt and fuel pump, wipers, cruise, fog lights, interior lights, seat belts, power windows and door locks, radio and starter.
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10-16-2005, 07:48 PM
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I would get a test light and check for an open fuse.It is probably the one for the defrost.I think it is on the same circuit.
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10-16-2005, 08:41 PM
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By golly red, you were correct.
 I guess I should have looked at little closer at the fuses rather than just read the label. I figured that since the label said it was for the rear defroster that it wouldnt have anything to do with the dash controls. Come to think of it, I dont think the rear defroster had been working anyway. I just never cared a whole lot to check until today.
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10-16-2005, 09:01 PM
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Great to here it worked.It could also be the rear defrost shorted,but it is usually the ac coil.
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10-16-2005, 09:03 PM
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Well it seemed to work, I played with them for aboue 5 minutes or so without any problems. If they go out again I know where to start looking. Im gonna guess it's the AC too, but it's disconnected now.
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