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1998 C5 BCM Components

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Old May 24, 2024 | 02:24 PM
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Default 1998 C5 BCM Components

Hey folks, first post as a fresh corvette owner. The previous owner of my 1998 noted an electrical drain that killed the battery in about 24 hours. Used a shunt, and found the BCM pulling 320mA with everything off. I opened it up and found sure enough a blown capacitor that had created a short. The green connector here has two different sizes caps on it, 92 nF and 1250 pF. Anyone ever fixed one of these or has one on a table to tell me what the furthest right capacitor is supposed to be on the green connector?
Cheers!

Dead cap all the way to the right where the green connector solders in.
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Old May 27, 2024 | 08:00 AM
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Moved to C5 Tech for some assistance.
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Old May 27, 2024 | 09:37 AM
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Maybe try to find the schematic drawing for the BCM
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Old May 27, 2024 | 10:14 AM
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Originally Posted by djjankus
Hey folks, first post as a fresh corvette owner. The previous owner of my 1998 noted an electrical drain that killed the battery in about 24 hours. Used a shunt, and found the BCM pulling 320mA with everything off. I opened it up and found sure enough a blown capacitor that had created a short. The green connector here has two different sizes caps on it, 92 nF and 1250 pF. Anyone ever fixed one of these or has one on a table to tell me what the furthest right capacitor is supposed to be on the green connector?
Cheers!

Dead cap all the way to the right where the green connector solders in.

That whole area looks a little rough, like it was reworked at some time.. Looks like it got wet at some point. The pic is not super clear, but I do not see the cap separated. I would be more concerned about the corrosion and electromigration causing a short.
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Old May 27, 2024 | 11:29 AM
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The good news is that BCMs are available on that auction site for $100-200 unlike some of the other electronics which are made of un-obtanium!
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Old May 27, 2024 | 12:45 PM
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Originally Posted by lucky131969
That whole area looks a little rough, like it was reworked at some time.. Looks like it got wet at some point. The pic is not super clear, but I do not see the cap separated. I would be more concerned about the corrosion and electromigration causing a short.
yeah apologies for the poor image quality, maybe I need to upload differently...
the capacitor literally crumbled apart, but yes there is some white discoloration that could indicate corrosion and/water intrusion. I appreciate the reply!
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Old May 27, 2024 | 12:45 PM
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Originally Posted by Vetteman Jack
Moved to C5 Tech for some assistance.
thank you, I don't know how I missed that
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