Multimeter results: do i have a parasitic draw?

crazyone64

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May 2, 2018
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Car is stored, not driving it right now.
Battery lasts less than a week.
Bought a new battery, still lasts 5 to 7 days.
I've attached the multimeter results if someone could help confirm if I have a parasite.
 

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Noobz347

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The short answer is "yes" you have a parasitic draw. All computer-controlled cars do.

I agree that 7-days on a fresh battery is excessive but an El-Cheapo battery with a small reserve can help contribute to that.

One of the first things that I would check is the alternator. If the diode is bad then the battery tries to run the alternator like a motor when the engine is off.

After that, I would begin a process of elimination by pulling fuses one by one and checking the current draw from the battery as you do.

View: https://www.youtube.com/watch?v=KF1gijj03_0&ab_channel=EricTheCarGuy
 

crazyone64

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May 2, 2018
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Toronto Canada
The short answer is "yes" you have a parasitic draw. All computer-controlled cars do.

I agree that 7-days on a fresh battery is excessive but an El-Cheapo battery with a small reserve can help contribute to that.

One of the first things that I would check is the alternator. If the diode is bad then the battery tries to run the alternator like a motor when the engine is off.

After that, I would begin a process of elimination by pulling fuses one by one and checking the current draw from the battery as you do.

View: https://www.youtube.com/watch?v=KF1gijj03_0&ab_channel=EricTheCarGuy

Thanks for the reply.
It turned out to be 2 areas..
1. I disconnected my car audio fuse holder which is under the hood. That dropped it from 2.6 to 1.8.
2. Under the hood fuse #6. 40a. Instrument Custer, powertrain control module. And it dropped from. 1.8 to 0.

Any ideas about #2?
 

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crazyone64

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With the battery disconnected, I removed the mentioned fuses that I thought pertained to #6 under the hood..

I closed the door, inserted the #6 under the hood, the drain is present.

I was hoping that by removing one of those 6 fuses, or all 6, would stop the drain.

Is it fair to say it is the pcm?
 

Noobz347

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So wait... Does the number 6 fuse cause a significant drain?

If so, I'd be looking at the instrument cluster according to your image.

What takes you to the PCM?
 

crazyone64

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Oh, I see... It does both.


Pull the cluster and get a good lock at the back of it. See if you have any shorts or burnt leads.
Thank you, I will remove the instrument cluster and post pics tomorrow.

What if I disconnect the instrument cluster and retest with my multi, with all fuses back in.
This should confirm if it's draining my battery right?
 

crazyone64

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I disconnected and removed the instrument cluster,
Put all fuses back in.
Retested with the multi.

I still have the battery drain.
I guess this implies it is my pcm?? since the issue is present with the cluster removed and those were the only 2 options according to the manual (pcm / cluster)
Any advice?
 

crazyone64

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May 2, 2018
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Toronto Canada
I disconnected and removed the instrument cluster,
Put all fuses back in.
Retested with the multi.

I still have the battery drain.
I guess this implies it is my pcm?? since the issue is present with the cluster removed and those were the only 2 options according to the manual (pcm / cluster)
Any advice?

I noticed fuse 35 inside the car is for pcm, I removed it as well and the drain is still present.
 

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crazyone64

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I unplugged the pcm, Retested and I still have a battery drain.
Im confused, I removed both the instrument cluster and the pcm. How can I still have a drain?

Please help :(
 

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crazyone64

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So what is that supposed to run?

I found the following in another article.

"One of the keys to solve this problem is to look at the INPUTS to the GEM. It seems possible to me there is some signal that is keeping the GEM awake (or causing it to wake back up).
  • Door ajar
  • Driver's door key lock activation.
  • interior lights
  • trunk ajar
  • remote door lock/unlock "
 

crazyone64

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I found in the manual a section for 'wiring diagram component location'

Component: Generic electronic module
Wiring diagram: Body Control modules, electronic suspension

I'll try and upload the 2 diagrams if anyone is familiar with wiring diagrams?
I can't make sense of it yet but I'm hoping someone here can