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Old 07-07-2003, 08:39 AM   #1
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Default Checked DTC Killed Radio

I followed the steps outlined in one of the posts to check the DTC for a "Service Engine Soon" warning that involved using a paper clip to ground out terminals A and B in the ECM'* diagnostic connector Now my radio does not work.

Any ideas? :(
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Old 07-07-2003, 09:38 AM   #2
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Default Re: Checked DTC Killed Radio

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Originally Posted by rclodfelter
I followed the steps outlined in one of the posts to check the DTC for a "Service Engine Soon" warning that involved using a paper clip to ground out terminals A and B in the ECM'* diagnostic connector Now my radio does not work.

Any ideas? :(
First what year of Bonneville are we talking about here?
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Old 07-07-2003, 09:49 AM   #3
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Sorry, I ment to put this in and forgot. It is a 1997 SE 3800 Series 2. One post said that the trick worked for model years up to 1993 and another somewhere listed up to 1999.

Thanks
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Old 07-07-2003, 01:12 PM   #4
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The article in Techinfo is specific for years up to and including 1993. I'm hoping you just smoked a fuse. Have you checked them yet? What functions do/don't work on your radio? Does the clock even work?
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Old 07-07-2003, 02:18 PM   #5
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Only the lights that illuminate the controls are working. I checked what I thought was the fuse and it was OK. I did not have time to pull them all. And no the clock is not working. The display is totally out.
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Old 07-07-2003, 02:20 PM   #6
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I think we need Fuddyduddy in here!
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Old 07-07-2003, 02:42 PM   #7
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How do we conjure him up?
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Old 07-07-2003, 02:58 PM   #8
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Hmm. I'll have to look at an electrical diagram to see what you did. I don't have one for a 97.... Maybe the 94 will be similar. I'll look when I get home. Hopefully just a fuse.

Yes, the procedure only works for vehicles with the 12-pin diagnostic connector, which they quit using in late 1993/ early 1994.
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Old 07-07-2003, 03:07 PM   #9
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I appreciate the help, You may want to check all the possible stupid things that could happen with what I did. I was not sure I had the right a and b terminals and tried some others. The diagram I was looking at turned out to be upside down from what I thought it was.
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Old 07-07-2003, 06:10 PM   #10
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Default Hold The Presses

Hold the presses. It was a fuse but not the one that the manual said it should be. I pulled all of the 10A fuses and found a blown one, replaced it and the radio is back. I am still curious as to why the ALCL would have a tie-in to the radio.

Aso, is there a way to read the DTC in the 1997 Bonneville without going to the dealer or purchasing an expensive scope?

TX
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