Fuel Data Center and Electronic Climate Control not funtioning
When I start the vehicle (1991 Cadillac Deville), the Digital Fuel Data Center and the Electronic Climate Control are showing a small 'c' in the display and nothing else. The fuel center doesn't give any fuel information. The Electronic Climate Control can't be operated either. The blower for the Heat/AC is running on high and directed to the defrost on top of the dash. Every now and then while driving, both start to work for a short time and then stop again.
Re: Fuel Data Center and Electronic Climate Control not...
This is defenetly the BCM, I had a 1990 with all of the same problems. Buy a rebuilt and install it behind the clove box. Remember that you must install you memory prom into the new unit as they don't come with any in them (it is what is memorizing your miles driven.) You will get off pretty easy on this one as they are available and not too expensive.
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I am currently working on my 92 Deville with the same problem. I was driving along, and smelled what I felt was a smoking printed circuit board. I looked down, and the digital fuel data center and climate control panel were dark.
I have the factory shop manual, and with the aid of a meter and the manual, I traced the problem to a bad BCM. The 16v supply coming from the BCM was gone. Opened up the BCM and found an overheated transistor. I also removed the fuel data center and the Climate control panel. The fuel data center panel did not smell good. I found a shorted capacitor on the Fuel data center circuit board. I am replacing the capacitor, and will be picking up a used BCM at the boneyard tomorrow. I might also have an overheated wire in a cable that might have to be replaced. I have not gotten that far in the troubleshooting yet.
the climate control is intergrated through the pcm and ecm i would advise you to take the vehicle to the service shop they have a diagnostic scanner that will access the ecm and either clear a code that prevents the climate control from working or find a more severe problem that requires you to replace the hole unit. please rate this solution. thank you and good luck.