1985 won't start vats theft deterant ?
03-31-2014, 08:46 AM
#21
1st Gear
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Thank you!
Your comment on this post solved the problem -- disconnect the 13-pin connector. My son and I have been trying to get our '85 Corvette started for 6 weeks. We've talked to mechanics; replaced every relay, switch and valve known to man; and I was on the verge of replacing the computer when I decided to investigate the anti-theft feature -- or 'pain the the ***' in this case.
Again, thank you! Your insight and knowledge made my 17-year-old son VERY, VERY happy.
Best,
David
Again, thank you! Your insight and knowledge made my 17-year-old son VERY, VERY happy.
Best,
David
Yes, I'm sorry, there was another difference between '84 and '85. The '84 gets power to the Horns and Horn Relay from the CTSY/CLOCK Fuse, so pulling the Theft Fuse on the '84 doesn't stop normal Horn function. On the '85-'89 the Horns and Horn Relay are powered from that Theft Fuse behind the DIC, so removing that fuse disables the Theft Deterrent System as well as normal Horn function. I'd forgotten that, again my apologies.
At this point you either have to get to the Theft Deterrent Controller, up behind the Breadloaf (between the ECM and Breadloaf), or just disable the Start Interrupt function on the Theft Deterrent System using the jumper as I explained earlier. If you go for the Theft Deterrent Controller route, you can either replace it with the spare you have to try to fix it or just pull the connector to disable the Theft Deterrent System completely. It's a single row black connector with 13 cavities, two of which are empty.
At this point you either have to get to the Theft Deterrent Controller, up behind the Breadloaf (between the ECM and Breadloaf), or just disable the Start Interrupt function on the Theft Deterrent System using the jumper as I explained earlier. If you go for the Theft Deterrent Controller route, you can either replace it with the spare you have to try to fix it or just pull the connector to disable the Theft Deterrent System completely. It's a single row black connector with 13 cavities, two of which are empty.
