Cadillac Repair: 89 eldo electronics, electrical schematics, fuel gauge

Question

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Followup To

Question -
My dash displays fine the first start in the morning; after the 2nd start of the day, nothing displays (no mileage, etc.), Fuel gauge is "E" and no controls work.  The defrost blower stays on constantly.  

I get the following error codes:

E024 History
E047 Current
B120 History
B121 History
B122 History
B123 History
B337 History
B441 History
B448 History
B552 History

Any help would be great. Thanks.

Answer -
First you need to CLEAR all the codes and then drive the car and see which codes return.

tom
Now codes read:

E024 History
E047 Current
B121 History
B337 Current

Thanks in advance for your help.

Answer
E047 = BCM (computer) to ECM (computer) communications problem.

B337 = Loss of programmer data.


You will need to contact me at:


tomcjoy@msn.com


In order for me to provide you with pictures, Diagnostic procedures and electrical schematics to find and fix your problem since this board does not allow sending pictures.

PLEASE include your original question(s) and the MAKE-MODEL-YEAR and ENGINE SIZE of your vehicle when you contact me.

PLEASE tell me if you do your own repairs and or your skill level of auto repair. This is VERY VERY important if I am to be able to help you repair your own vehicle .


tom