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Hello my name is***** am an ASE Master Technician and I am glad to help you with your question.
Check all fuses, you probably have more blown fuses, not just the 100 amp fuse. Do the accessories turn on?
Use a test light to check all fuses. Sounds like you still have blown fuses.
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Do you have a test light or meter?
It could be a few different ones, the easiest to check is with a test light. You can probe both sides of the fuse with the key on. You do not have to remove the fuses. If you have power on both sides fuse is ok, if only one side of the fuse has power, then you found a blown one.
Yes you can use a meter, the leads may not be small enough to fit in the hole on the back of the fuse.
Use a jumper wire to go directly to the starter solenoid to the battery and see if it turns over.
The starter solenoid is the smallest wire on the starter. I can send you a location from the service manual if you would like.
Let me know what happens.
Sounds like you still have a blown fuses.
Those fuses that are blown could be powering other things besides the headlight, only way to know is to pull up the power distribution diagram and see which system are powered off of those 5 fuses.
Does the scan tool communicate with the ECU?
This would tell us a lot, because if you cannot communicate you know the ecu it not turning on.
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