Cadillac Repair: electrical problem, electrical schematics, volt ohm meter

Question
Hi this is ken i wrote the other day about all my warning lights coming on dash board. thank you for responding so fast. You said you needed more information. Lights that come on are service engine,service vechile and service air conditioner. Then heater will come on then off then a/c will come on then off,cruise control will come on then off doing the same as when you push the off and tempatureup button at the same time (when you check for codes) but no codes come up. All of this is being done on its own every few minutes the whole time car is running. Also a little c shows up on fuel gauge and tempture control gauge. Only had the car one year I have replaced air conditioning compressor june of 2004 and flushed heater core december 2004 dont know any other repairs. a/c works fine. All of this has not affected they way the car runs seems to run just as good as before this happened. The only other thing that happened the theft alarm went off [horn blowing] couldnt get it to shut off had to wait till it stopped on its own.  1993 cadillac deville 88,000 miles on it. I hope i gave enough information this time. Thank you again. Ken

Answer
You have a problem with either the A/C-Heater control head and or the CCM (Central Control Module).

There are diagnostic tests that need to be performed and requires a moderate amount of mechanical and electronic skills to perform the diagnostic tests and read and understand the electrical schematics.

Without a service manual and technical skills using a digital volt-ohm meter you are going to have to let the dealer do the diagnostics.

I can give you the information, But I don't know your level of skills in order to perform the diagnotic tests required.


You will need to contact me at:


onlineautohelp@msn.com


In order for me to send you some electrical schematics, diagnostic procedures and pictures related to your problem.

This ALL EXPERTS website is NOT mine.


I am only a VOLUNTEER helping answer BASIC simple questions to those in need and this website does not allow pictures to be sent and or received.

Please include all of the information, MAKE, YEAR, MODEL, Engine size, and all necessary other information that you previously provided as well as the information that I just gave you when you contact me.



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