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No start & no hot signal to ignition module

 
Old 02-08-2019, 04:00 AM
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wheeljo2
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Default No start & no hot signal to ignition module

My 96 LT4 coupe died on me the other day while running. I did some trouble shooting with my 94 convertible and realized that I am not getting a hot signal when the key is on to my ignition module wires labeled A and D on the plug harness. Wire B appears to be the ground wire and it checked out. Wire C I suppose is the switchable hot from the ignition but have not checked it. I checked all the fuses inside the car at the passenger door dash area and they were all good. Is there another fuse box somewhere for the ignition module and coil? I believe the previous owner had replaced the ignition switch so maybe one of the wires came loose under the dash. Just thought I would post first in case someone else may have experienced this before.

Appreciate your help!
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Old 02-08-2019, 10:33 AM
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CorvetteRules
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There are two axillary fuse blocks under the passenger side dash that can accessed by unscrew several screws under the glove box. I don't have my FSM available so I can't tell you what fuses are in it .
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Old 02-08-2019, 01:04 PM
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Kevova
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Ignition module gets power from coil. There is a 10amp fuse for coil . Code maybe stored. Opti works different than typical HEI. Opti sends signal to PCM. PCM sends signal to ICM to trigger spark. Factory Manuals?
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Old 02-08-2019, 09:27 PM
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don hall
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Old 02-11-2019, 05:12 PM
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wheeljo2
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Appreciate the insight fellas.. I found my problem someone had spliced in a new Ignition Module connector and used butt connectors and one of the wires had pulled out and blew the coil fuse #25 in the dash.

Last edited by wheeljo2; 02-11-2019 at 05:13 PM.
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Old 02-11-2019, 05:19 PM
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don hall
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Originally Posted by wheeljo2 View Post
........ I found my problem ......
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