Hi, Just replaced a perfectly good battery and found out the battery wasn't bad but I have a parasitic draw to hunt down.
I didn't even know what a parasitic draw was prior to today, but with a little research and a few youtube videos I was able to determine that my alternator was good and I had a parasitic draw.
I checked all the fuses and identified fuse 38 "audio" (have bose without nav murano) and the culprit. With multimeter there was a 2.25 amp draw until #38 was removed, then it dropped down to .47 amp. Based on one of the videos I watch it is my understanding that anything under .5 is ok.
So I identified the problem and associated Circuit but now I am stuck. Looking at the wiring diagram from the service manual but it is very confusing.
If anyone can give me some next step or hints I would appreciate it. Is it most likely some type of relay problem?
Parasitic Draw - '05 Murano - Fuse 38 Audio
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jonhirschman
- Posts: 3
- Joined: Sun Jul 27, 2014 8:36 am
- Car: 2005 Nissan Murano SL AWD
Bose No Nav
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PapaSmurf2k3
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Re: Parasitic Draw - '05 Murano - Fuse 38 Audio
I'm not aware of any relay in that audio system, but I recently went through this exact problem with my Honda.
Basically, you've already done step 1 (determine which circuit the draw is happening in). Next, leave the fuse connected and start unplugging things on that fuse (like if there's the radio, a clock, an amp, etc). Check the multimeter after unplugging each one. If you unplug one and it drops down to the .5ish amp draw, you know that's the problem (and can replace that 1 unit). If you unplug ALL of them and you still have a draw (like I did), then you most likely have a short somewhere and will have to run a new wire from the fuse box to the back of the radio.
Basically, you've already done step 1 (determine which circuit the draw is happening in). Next, leave the fuse connected and start unplugging things on that fuse (like if there's the radio, a clock, an amp, etc). Check the multimeter after unplugging each one. If you unplug one and it drops down to the .5ish amp draw, you know that's the problem (and can replace that 1 unit). If you unplug ALL of them and you still have a draw (like I did), then you most likely have a short somewhere and will have to run a new wire from the fuse box to the back of the radio.
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PapaSmurf2k3
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- Joined: Thu Nov 21, 2002 3:20 pm
- Car: 2017 Corvette, 2018 Focus ST, 1993 240sx truck KA Turbo.
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Re: Parasitic Draw - '05 Murano - Fuse 38 Audio
By the way, whenever I was doing this, I felt like I was re-living that scene from Apollo 13.
[youtube]http://www.youtube.com/watch?v=7-FbfkUD78w[/youtube]
[youtube]http://www.youtube.com/watch?v=7-FbfkUD78w[/youtube]
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jonhirschman
- Posts: 3
- Joined: Sun Jul 27, 2014 8:36 am
- Car: 2005 Nissan Murano SL AWD
Bose No Nav
Re: Parasitic Draw - '05 Murano - Fuse 38 Audio
Checked everything on the circuit. I seems to be the radio (not the amp or the subwoofer). Unplugged everything and as soon as I plugged in just the radio (connector m44 I think) without amp or subwoofer connected the draw increased again. Ordered a new (used radio) from a salvage yard. Hopefully that will do the trick.