Cranks But Won't Start

1993 CADILLAC SEVILLE
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PERPETUAL_LOVE
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Engine Performance problem V8 Front Wheel Drive Automatic 100000 miles
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I checked the computer dianogstic using the dianogstic control by pushing the off switch and the heat setter to scan for codes on a 1993 Cadillac Seville. The codes in which came up were P052 History, I052 History, No ACP, NO SIR and PCM?. What does all this mean and how can I fix the problems.

Sincerely,

I.T.
Mar 11, 2008 at 8:20 PM
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STRAILER
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Hello,

I would start by checking all of the fuses by following this guide because it sounds like none of the computers are powering up.

https://www.2carpros.com/articles/how-to-check-a-car-fuse

If all the fuses are good I would think the ECM is bad and needs to be replaced.

Check out the diagrams (Below)

Please let us know what you find. We are interested to see what it is.

Cheers, Ken
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Feb 2, 2018 at 6:58 PM
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PERPETUAL_LOVE
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I checked all of the fuses so I did what you said and replaced the ECM with a used unit and the car started with no issue, thanks for your help I love this site.


Feb 2, 2018 at 6:59 PM
Repair Safety Notice: This information is for general instructional purposes only. Vehicle repair can be dangerous. Verify all information, follow manufacturer service procedures, use proper tools and safety equipment, and consult a qualified repair shop when needed.