Battery drain tied to fuse #6
6/10/21, 11:21 AM
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Battery drain tied to fuse #6
Hello,
I could really use some advice.
I have a battery drain where the batery lasts 5-6 days undriven, and using my multi, i determined it was tied to #6 40A fuse under the hood.
#6 indicates Instrument Cluster / Powertrain Control Module.
So i removed the cluster, and unplugged the PCM.
Parasite is still there, how do i proceed after trying these two basic tests?
2003 mach1
I could really use some advice.
I have a battery drain where the batery lasts 5-6 days undriven, and using my multi, i determined it was tied to #6 40A fuse under the hood.
#6 indicates Instrument Cluster / Powertrain Control Module.
So i removed the cluster, and unplugged the PCM.
Parasite is still there, how do i proceed after trying these two basic tests?
2003 mach1
6/10/21, 06:27 PM
#2
Legacy TMS Member
You will have to literally trace that wire from the fuse and see where it goes. Either though the wiring diagram, or physically on the car. Any connectors must be checked back probed and front, connected and not, to see if the draw is still there until you find the problem. And also physically tracing the wire may expose a chafed/cut/corroded short or disconnect that might be causing the problem, or possibly a spliced wire that you didn't know about (if it wasn't your car all the time it's been around... Previous owners do things, y'know...)
It could also be a bad ground and the device in question is trying to ground out any way it can, and it found a path through that particular circuit.
Wiring issues like this are a *pain*.
And it's tedious. But this is the way: Hunting it down relentlessly.
I know it's not the answer you want, but it's the answer I got. I do hope it helps. And welcome to the forums!
It could also be a bad ground and the device in question is trying to ground out any way it can, and it found a path through that particular circuit.
Wiring issues like this are a *pain*.
And it's tedious. But this is the way: Hunting it down relentlessly.I know it's not the answer you want, but it's the answer I got. I do hope it helps. And welcome to the forums!
6/10/21, 07:43 PM
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You will have to literally trace that wire from the fuse and see where it goes. Either though the wiring diagram, or physically on the car. Any connectors must be checked back probed and front, connected and not, to see if the draw is still there until you find the problem. And also physically tracing the wire may expose a chafed/cut/corroded short or disconnect that might be causing the problem, or possibly a spliced wire that you didn't know about (if it wasn't your car all the time it's been around... Previous owners do things, y'know...)
It could also be a bad ground and the device in question is trying to ground out any way it can, and it found a path through that particular circuit.
Wiring issues like this are a *pain*. And it's tedious. But this is the way: Hunting it down relentlessly.
I know it's not the answer you want, but it's the answer I got. I do hope it helps. And welcome to the forums!
It could also be a bad ground and the device in question is trying to ground out any way it can, and it found a path through that particular circuit.
Wiring issues like this are a *pain*.
And it's tedious. But this is the way: Hunting it down relentlessly.I know it's not the answer you want, but it's the answer I got. I do hope it helps. And welcome to the forums!
I was able to narrow it down a bit more.
I can now stop the drain by removing fuse #39 from inside the car fuse box, which is the GEM. It looks like there are a few associated fuses with gem in the name, I'll try removing those next,
6/11/21, 10:06 AM
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I'll have to upload some pics of my black Mach 1. She's a beaut
I found these fuses:
Radio gem
Overdrive cancel switch gem
GEM anti theft relay
GEM interior lamps
Gem fuse #39
I think i need some help with the wiring diagram, process of elimination has only confirmed gem
With the fuse 39 back in, the draw begins, I removed the other gem fuses, draw still present.
I found these fuses:
Radio gem
Overdrive cancel switch gem
GEM anti theft relay
GEM interior lamps
Gem fuse #39
I think i need some help with the wiring diagram, process of elimination has only confirmed gem
With the fuse 39 back in, the draw begins, I removed the other gem fuses, draw still present.
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