I took a log file with Autoenginuity scan tool.
Here is the results.
I posted a very interesting part of the log where there was a full charge and then full big discharge of IMA battery. What do you think?
Negative current value means IMA battery charge. Positive current value means IMA battery discharge.

 

Generally, when the car fully discharges the IMA batteries, is when the sensor that gauges State of Charge (SoC) needs to be reset/recalibrated. I don't remember how the ECU decides when that is, but it does, then drains and recharges the IMA batteries.

 

I think I still have a CDROM around here that discusses the different components in the HAH and how they operate. I'll see if I can dig it up, if you want to borrow it.

 

What you see on the graph is not battery recall.

 

I took a log during my regular commute from work. I think that is just not right when battery SOC sits at 48% most of the time. What do you think?

 

Holy crap that's cool. How do I retrieve a log like that?

 

Using Autoenginuity scan tool and their software. But don't be too excited about their stuff. It's still in development mode when you talk about diagnostic of HAH. For instance they did not find yet the way to read transmission part of ECU. So transmission diagnostic is not available for HAH. I could not convince them that HAH has 5-sp AT. They think it has CVT like HCH. I tried this tool on Acura TL and was able to connect to transmission ECU though.