LS - 1st and 2nd Gen (1990-2000) Discussion topics related to the 1990 - 2000 Lexus LS400

A/C controller, Clock and Outside Temp Problemo

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Old 04-15-19, 09:28 PM
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Giorgio13
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Default A/C controller, Clock and Outside Temp Problemo

Update...I pulled the wiring diagrams up from All Data Diy and tracked down the fuse that responsible for the problem. It was FR CIG 15 amp fuse that is located on the interior fuse box👍🏽. Now i am wondering why it blew the fuse. I replaced the fuse and it has not blown and everything works once again. My radiator/ac fan kicked on as well and it didnt work before the AC controller stopped working. Today was a good days 💪

Sup guys,

I just can't wrap my head around electrical diagnosis. Here is the issue...the AC controller, clock and outside temp display are all getting power but are blank. The AC controller is unresponsive and won't turn the AC on but the light for it is on. The clock and outside temp both have a blank display as well. Anyone have a similar issue? I checked all connections and they are solid. I check the ground behind the radio and that is fine as well. All fuses under the hood are in good order. Thanks for reading and hopefully someone can give me some pointers. I'll post some pictures of this when i get home.

Much Appreciated
GIORGIO13

Last edited by Giorgio13; 04-16-19 at 10:11 PM. Reason: Updated
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