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2006 nissan altima 2.5s
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1 Posts
Discussion Starter · #1 ·
I replaced alternator and battery for my 2006 altima 2.5s about 5 weeks ago. Without driving it in the past 2 weeks, I just found the battery was dead and could not jump start the car. By checking the battery at Autozone, I was told the battery is permanently damaged. Replaced with a brand new battery and checked the parasitic drain with a multimeter, I read about 0.27 Amps. By pulling out every fusible fuse, located underhood and on the driver side, one by one, the reading has no change. I am totally lost on isolating the root issue.

I appreciate any suggestion from you guys.
 

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Altima FTW
ASE Certified Master Technician & Advanced Level Specialist
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682 Posts
Pretty large drain, specification is 50 (.05a) milliamps or less. Parasitic drains can be difficult to diagnose at times. There is another fuse box under the dash near the BCM. In order to check those fuses you will have to keep open the driver's door and trick the door switch to make the BCM think the door is closed so the system does not stay awake. Once you do that you need to wait until the system goes to sleep. Once there, you can begin pulling the fuses in the dash fuse box. May have a module staying awake causing the drain. Any aftermarket equipment?
 

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09 Altima 3.5SE 6MT Sedan
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6,365 Posts
Leave the meter connected for at least 30-60s. Over that time different subsystems will go to 'sleep'. If after 1minute of the battery being connected, you still have 0.25A, that's an issue for sure.

For reference, when my '03 alternator died, it was pulling a solid 2.0A 24/7. The 03 3.5 had a nominal drain of about 0.07A when off (ie 60+s after battery reconnect).

Do the '06's also have the fuse/fusible link box attached to the +ve battery cable? If so, there could be another batch of fuses to play with.

When I was debugging my own drain problem, I started by disconnecting the big three at the +ve cable...ie disconnected alternator and starter leaving only IPDM. In my case, the problem went away...so I knew I'd already narrowed it down...and it wasn't the starter in the end.

Last thing be sure to check the other 'dumb' things...more than a few people have been burnt by trunk lights that are stuck on (you'll know if you open the trunk and the bulb is sizzling hot already).
 
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