Nothing When Ignition Switch is On
Thank you. I am assuming that is in the manual, so I will look for it, but I doubt that changed from 2017 to 2019.
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,921
Likes: 8,026
From: poway
Thanks for that Jake. I do have the service manual with the schematics, but that makes it a little easier to follow the the ground circuit.
I disconnected the BCM this morning and the ground on the maintainer lead was still hot at 7.38 volts. This makes me believe that ground #2 is not making a good connection. The other question is what is feeding power into the system that needs to be grounded if the ignition is off. The way I understand this is if the ground was making contact it shouldn't show any power because it would be going to ground.
I disconnected the BCM this morning and the ground on the maintainer lead was still hot at 7.38 volts. This makes me believe that ground #2 is not making a good connection. The other question is what is feeding power into the system that needs to be grounded if the ignition is off. The way I understand this is if the ground was making contact it shouldn't show any power because it would be going to ground.
You mean the battery tender connection? It should be 0 volts referenced to the battery terminal. Could be ground 1 or ground 2. 1 grounds the battery. 2 grounds the electrics. Maybe the cable going from the battery terminal to the ground 1 got damaged.. Actually either one..
You mean the battery tender connection? It should be 0 volts referenced to the battery terminal. Could be ground 1 or ground 2. 1 grounds the battery. 2 grounds the electrics. Maybe the cable going from the battery terminal to the ground 1 got damaged.. Actually either one..
Road Master
Joined: Dec 2022
Posts: 822
Likes: 488
From: LA Ca.
I'm not sure I'm reading this right. With your battery tender connected, you get some dash lights ect. But with just the battery, you get nothing.
If this is correct, try another known good battery. You could also take you car battery and use jumper cables to the bike battery, just don't start the car. If the bike lights up as normal, then a likely bad battery, I don't care if it's only a week old, new ones can go bad.
And, which has already been mentioned, check your grounds and even the positive connections to the battery. Especially the wires connected directly to the battery. They could have been loose, then got dirty from arcing and now even when tight are not making good contact.
Good luck!!
Tom
If this is correct, try another known good battery. You could also take you car battery and use jumper cables to the bike battery, just don't start the car. If the bike lights up as normal, then a likely bad battery, I don't care if it's only a week old, new ones can go bad.
And, which has already been mentioned, check your grounds and even the positive connections to the battery. Especially the wires connected directly to the battery. They could have been loose, then got dirty from arcing and now even when tight are not making good contact.
Good luck!!
Tom
First, thanks to everyone that responded. The input did help me resolve this issue.
I went out to the garage this morning and removed the battery with the intention of checking and cleaning the grounding connections. As I was tracing the grounding cable which hooks to both the transmission and ground #1, the nut to ground #1 came off. So theres the problem, ground #1 was loose, really loose. So I cleaned the grounds, hooked them up, used a drop of blue Loctite on the nuts, and torque them to spec. I then installed the battery and the main fuse. When I turned the switch everything lit up and it turned over when I pushed the starter button. I didnt have the tank on, so no fuel. I will install the tank tomorrow and start it.
I went out to the garage this morning and removed the battery with the intention of checking and cleaning the grounding connections. As I was tracing the grounding cable which hooks to both the transmission and ground #1, the nut to ground #1 came off. So theres the problem, ground #1 was loose, really loose. So I cleaned the grounds, hooked them up, used a drop of blue Loctite on the nuts, and torque them to spec. I then installed the battery and the main fuse. When I turned the switch everything lit up and it turned over when I pushed the starter button. I didnt have the tank on, so no fuel. I will install the tank tomorrow and start it.
Seasoned HDF Member
Joined: Dec 2005
Posts: 19,921
Likes: 8,026
From: poway
First, thanks to everyone that responded. The input did help me resolve this issue.
I went out to the garage this morning and removed the battery with the intention of checking and cleaning the grounding connections. As I was tracing the grounding cable which hooks to both the transmission and ground #1, the nut to ground #1 came off. So there’s the problem, ground #1 was loose, really loose. So I cleaned the grounds, hooked them up, used a drop of blue Loctite on the nuts, and torque them to spec. I then installed the battery and the main fuse. When I turned the switch everything lit up and it turned over when I pushed the starter button. I didn’t have the tank on, so no fuel. I will install the tank tomorrow and start it.
I went out to the garage this morning and removed the battery with the intention of checking and cleaning the grounding connections. As I was tracing the grounding cable which hooks to both the transmission and ground #1, the nut to ground #1 came off. So there’s the problem, ground #1 was loose, really loose. So I cleaned the grounds, hooked them up, used a drop of blue Loctite on the nuts, and torque them to spec. I then installed the battery and the main fuse. When I turned the switch everything lit up and it turned over when I pushed the starter button. I didn’t have the tank on, so no fuel. I will install the tank tomorrow and start it.
With all the dyno runs you did with that thing, I'm surprised that not more stuff rattled loose..
Well it was only seven or eight, and they took place within two days. Granted, the ground connections arent something I would normally check for torque when going over the bike looking for loose fasteners, but I think from now forward they will receive attention periodically.
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Cruiser
Joined: Jun 2007
Posts: 159
Likes: 33
I am pleased you found the issue and that it was a relatively quick fix. Having owned many generations of Corvettes, I absolutely know about grounds. My car now has eight points for grounding. Each on has about 10 wires going there. I check those little beggars once a year and polish and put dielectric grease on them. Good luck. Ken
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