BCM, MCM & ECM Revisions

**uhtrinity** · 07-25-2011, 01:36 PM

Just thought I would add this:

BCM part # 1K100-PHM-010

Appears to be original for the 2000MT Insight
Allows key on 2 minute soc reset if battery is at 168 volts or greater
Uses a default range of 25% - 75%* as displayed via BCM display

BCM part # 1K100-PHM-A01

Appears to be a replacement for the Insight 2000-?
Allows key on 2 minute soc reset (verified @ 174 volts)
Also seems to go through a testing sequence where current load is ramped up and down in steps to determine if battery is a charged soc level. (ie. 3amps -> 4.5 amps - > 6 amps, etc.)
Uses a default range of 20% - 80%* as displayed via BCM display

*rounded to the nearest whole number

Once I get my batteries back to operational condition I want to see if the extra 5% for upper and lower mean anything.

Eli · 07-25-2011, 02:04 PM

I've been thinking it would be nice to start a BCM Database.

I'm using BCM 1K100-PHM-030 with all the data logging and stuff. It has a maximum of 82.0% and a minimum of around 23%, using MIMA.

I have what I believe to be an original 2000 BCM in Insight #3. I can't remember the part number off hand, but I'll update this post with it. I've noticed that it recals much differently than the '01 BCMs I'm used to.

I plan on getting the serial transceiver installed into it to start logging data with it too.

I also have a 1K100-PHM-A01, which was a replacement BCM from my pack being replaced under warranty that I will eventually get wired up to log data from also.

So with the 1K100-PHM-010 BCM, you really only see 75% BCM SoC max? That seems really odd to me, especially considering later BCMs are supposed to prevent the battery from overcharging.

It would be interesting to get a definitive list of differences.

**uhtrinity** · 07-25-2011, 02:26 PM

The max and min values I'm quoting are what the BCM display reads when a positive or negative recal occurs. With the 010 model I have seen as high as 99.9% and a low of ~18%.

Eli · 07-25-2011, 02:35 PM

I'm using Peter's standard code with no Xtra SoC or anything.

I guess I should clarify - I've seen 100.0% when grid charging with the 1K100-PHM-030 BCM, but the car by itself maxes out at 82.0%.

If you force regen, at 81.9% it will only be pushing about +0.5A in. The moment it hits 82.0%, the regen goes away and it will start pulling current from the battery instead, even with the joystick on full regen. Similar to how when you're milking assist with MIMA, the assist will suddenly turn to regen once the floor is reached.

**faxe** · 07-25-2011, 04:50 PM

Quote:

Originally Posted by Eli

If you force regen, at 81.9% it will only be pushing about +0.5A in. The moment it hits 82.0%, the regen goes away and it will start pulling current from the battery instead, even with the joystick on full regen. Similar to how when you're milking assist with MIMA, the assist will suddenly turn to regen once the floor is reached.

I have the 1K100-PHM-010 in mine, and it behaves the same way Eli.

In mine the hidden background charge starts at 65% but only charges
up to 70%.

E27006 · 07-26-2011, 06:49 AM

The USA class action, was that a problem with the BCM leading to overcharge of the pack leading to premature failure?

I am correct that packs and BCMs were replaced at Hondas expense?

Looking at the advanced diagnostics documentation, for newer cars, an OBD2 error code for "BCM software not loaded" is in the list, but not for early builds. So perhaps BCM is flashable for code in late build but not flash loaded for early models

**Hybrid-Battery-Repair** · 07-28-2011, 10:49 AM

-010 is from 2000 and is the one that can supposedly overcharge the battery at low temperatures
-020 is from early 2001
-030 is from late 2001

-070 came out around 2008 or so

E27006 · 12-13-2011, 04:25 PM

1K100-PHM-A00 is a BCM from a very early 2000 M/T RHD car sold in UK, vin 0009 where does this one fit into the revision scheme please?
It is unknown is the BCM was ever replaced at any stage.

Getting confused here, MCM is marked MT is it not? THe connector by the label, connector E from W/S manual is 8 way.

Eli · 12-13-2011, 04:29 PM

Quote:

Originally Posted by E27006

1K100-PHM-A00 is a BCM from a very early 2000 M/T RHD car sold in UK, vin 0009 where does this one fit into the revision scheme please?
It is unknown is the BCM was ever replaced at any stage

Sounds very early.

How much do you want for it? lol

E27006 · 12-13-2011, 04:56 PM

Quote:

Originally Posted by E27006

1K100-PHM-A00 is a BCM from a very early 2000 M/T RHD car sold in UK, vin 0009 where does this one fit into the revision scheme please?
It is unknown is the BCM was ever replaced at any stage.

Getting confused here, MCM is marked MT is it not? THe connector by the label, connector E from W/S manual is 8 way.

THe definitive statement:

The MCM is marked 1K000-PHM-030, MT, 5 connectors, connector E near label, is 8 way.
The BCM is marked 1K100-PHM-A00, 3 connectors, connector C near label, is 20 way.

Car is 2000, RHD, UK spec, vin 0009