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Discussion Starter #1 (Edited)
I have a 2010 Generation 2 Insight. Great car. I got this for my college age daughter. She has been away at school and the car has been sitting.
When I bought it, It had a dead battery, so I bought a new one and it started. I don't drive this car as often as I would like too, but the thing keeps going dead on me.(6 days of sitting) After I charged it again, I disconnected the negative terminal on the battery under the hood and I am getting a .3-.5 Amp draw. I did disconnect the middle connection(DC - DC Connection) on the positive side of the 12 V battery and the amp loss went to 0..
Does any one know about this parasitic draw? I don't know if this is an inherent problem with this car or what the fix may be. I must also tell you that it has a remote start. Was that an option?

Today, I tried to start it and it's dead, so I put the charger on it again and the 12 V battery was charged, but the display on the dash showed that the big battery bank was dead after I got it started. ????


Any thoughts?
 

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aftermarket equipment?

start pulling fuses one at a time and see if you influence the parasitic draw.
 

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Remote start was not a Honda option. So someone did hack the wiring to install it. If you want to keep it, that will need to be sorted out.

Also, the Insight is a poor choice of vehicle let sit around. The IMA battery pack is not the latest and greatest and needs to be regularly exercised.
 

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Discussion Starter #4
If the 12 V battery has a charge, shouldn't the engine start?

From all the reading I have done on this site, I got the point that the main battery bank is not that good. This car will not be used everyday but I want to keep it.

I can have my mechanic look at the remote start. I thought that it was aftermarket.
I understand about pulling fuses. That is why I started with the heavier gauge wires at the battery. Where can I find a wiring diagram? I did isolate the parasitic draw to the DC-DC Converter circuit. I'm not sure what that powers.

Has anyone ever hooked up a solar charger to a car like this? I'm thinking of installing a plug on the 12 V battery that is like the plug used on a battery tender. It could be installed in the grill somewhere and the panel could sit on the hood.
 

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By keeping it, I meant the remote start. I have never had my Insight use the 12 volt battery to start the car. The IMA system starts the engine. I am not sure how to revive a dead IMA battery pack. That's a whole different thing from the 12 volt under the hood. You really cannot leave this car sitting around. We have had owners buy Insights that have sat too long with weak IMA packs and it takes a few weeks of driving to revive them. You are going to have to get this thing to a Honda dealer or a hybrid specialist. Without a working IMA these things cannot be used. There is no generator to charge the 12 volt battery for one thing. It may have been weak when you bought it and by leaving it sit, you killed it. Hybrid battery specialists probably know how to revive one, but the neighborhood mechanic will not. This is a very complicated vehicle. For instance, a 2010 has had 4 software updates! Using a solar panel to keep the IMA charged is probably unrealistic. Folks around here have set up some kind of grid charger. But with a dead IMA, you can't even start looking into that. The NicCad batteries in these cars need to be charged and partially depleted regularly, thus my previous "exercised" comment. A newer lithium power pack might be able to just be kept on a charger to stay alive (actually, lithium batteries do not discharge when sitting around) but if you are not going to drive this thing around at least once a week (really drive, not just to the store and back) you will need to reassess even having it.

How many miles on it?
 

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A 12V has to have SUFFICIENT charge to start. 1st, it has to provide enough voltage to enable the various ECUs to power up and check systems. Second, if the ECUs determine something is amiss with the IMA battery, the car will use the 12V to crank start the engine instead of starting the ICE with the IMA motor (smooth, instant start). MUCH higher load.

The "empty battery" indication is normal after disconnecting the 12V.

The DC-DC converter is what charges the 12V based on the state of the IMA battery and input from the IMA motor. The car does not have an alternator.

Disconnect the remote start.

Also consider that open doors, hatches, etc. typically activate a bulb, which can be significant.
 

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Discussion Starter #7
The DC-DC converter is what charges the 12V based on the state of the IMA battery and input from the IMA motor. The car does not have an alternator.
Any idea why I am getting this constant draw?

Does anyone know where I could view/download a wiring diagram?
 

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Probably because the remote start (or alarm) is leaving something connected that isn't supposed be connected.

Sam
 

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I don't see any point continuing this discussion until the remote start is disconnected and confirmed to be or not be the problem.

Start with the **** that didn't come on the car. This means somebody of unknown competence hacked into the electrical system in some way. Isolate that and then determine if something is actually wrong with the car.
 

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Discussion Starter #10
Probably because the remote start (or alarm) is leaving something connected that isn't supposed be connected.

Sam
I agree.
I don't see any point continuing this discussion until the remote start is disconnected and confirmed to be or not be the problem.
Wow!

I am taking it to guy on Monday.

I'm still looking for a good wiring diagram, Sam. Know of any resources that I could look into?
 

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Sorry, I'm a G1 guy. I've never looked into resources for the G2.

Sam
 

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Did you ever find it? I was looking into this once and it was one of the relay computers not shutting down all the way. Sometimes you can see this with the dash glowing for no reason or a scan gauge like plugged into the odb2 port turning on.
 

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Discussion Starter #15
Did you ever find it? I was looking into this once and it was one of the relay computers not shutting down all the way. Sometimes you can see this with the dash glowing for no reason or a scan gauge like plugged into the odb2 port turning on.
I had the remote start removed. The 12 V battery was replaced because it was no good. It was only 18 months old but NAPA gave me a new one for free.
I still have the same draw.
We have been using the car fairly regularly now that my daughter is home for the summer but I need to find out what this is all about. I love this car.
We have never seen any display problems.
I will have system scanned to see if I can find this relay code.
Thanks
 
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