GladeStorm
Posts: 67
Joined: Thu Nov 21, 2013 9:17 am
Location: TN

OBD Scan Tools Info / Data

Sun Aug 17, 2014 6:29 am

I'm starting a new thread here to consolidate information we have on OBD scanners that is spread through several threads. I plan on editing this first post as information becomes available so that new owners can get up to date easier.

Scanners (confirmed to work with the Focus Electric):
  • FORScan Software - http://www.FORScan.org
  • Recommended Scantool: OBDLink MX (Bluetooth or WiFi)
    • -I suspect that the other OBDLink brand scantools might work but the FORScan documentation claims that there are timing issues with the less expensive imported ELM327 tools (my cheaper scantool did not work)
  • FORScan was originally written for PC use, but in mid-2014 added an IOS version (usig wifi) and in mid 2015 an Android version (which uses either wifi or Bluetooth).
Location of OBDII ports: http://www.myfocuselectric.com/forum/vi ... =672#p3804 -I believe either port is usable.
Last edited by GladeStorm on Tue May 26, 2015 3:37 am, edited 2 times in total.
2013 Ice Storm FFE

GladeStorm
Posts: 67
Joined: Thu Nov 21, 2013 9:17 am
Location: TN

Re: OBD Scan Tools Info / Data

Sun Aug 17, 2014 6:48 am

FORScan Overview

FORScan is primarily Windows-based but an IOS version is being test driven. They say that they will have an android version. All the PID coding/scaling is internalized; basically plug and play. Once the software identifies the FFE and you provide the model year, it polls all the modules. This is what it found via my OBDLink MX:

Image

Under the "Monitor" Tab (O'Scope icon) you first select the Module that you want to look at and the software provides a list of available parameters. You can then select up to 28 parameters to monitor at a time. (you can only monitor the parameters that are available in a single module at a time). Most modules are pretty boring unless you are trying to troubleshoot a problem; those in this forum will probably be most interested in small subsets of the BECM (114 parameters) or PCM (75 parameters).

Here's the information that comes with the first several parameters in the BECM

Code: Select all

AVERTEMP Average Temperature Range BATCURBECM Hybrid Battery Current BATTAGEBECM Battery Age in Months BAT_A_FAUL_STAT Battery Interpack Contactor A Fault Status BAT_A_INP_STAT Battery Interpack Contactor A Input Status BAT_A_OUT_DEM Battery Interpack Contactor A Output Demanded BAT_A_OUT_IND Battery Interpack Contactor A Output Indicated BAT_B_FAUL_STAT Battery Interpack Contactor B Fault Status BAT_B_INP_STAT Battery Interpack Contactor B Input Status BAT_B_OUT_DEM Battery Interpack Contactor B Output Demanded BAT_B_OUT_IND Battery Interpack Contactor B Output Indicated BAT_CHARG_CURR Hybrid/EV Battery Charge Current - Requested
-Ok - Some of this is a bit ambiguous; some over-technical. As more data is collected we should be able to identify the most interesting parameters and put a little more definition behind them.
Last edited by GladeStorm on Sun Aug 17, 2014 6:59 am, edited 1 time in total.
2013 Ice Storm FFE

GladeStorm
Posts: 67
Joined: Thu Nov 21, 2013 9:17 am
Location: TN

Re: OBD Scan Tools Info / Data

Sun Aug 17, 2014 6:51 am

Reserved for FAQ's and Summaries of collected data
2013 Ice Storm FFE

GladeStorm
Posts: 67
Joined: Thu Nov 21, 2013 9:17 am
Location: TN

Re: OBD Scan Tools Info / Data

Mon Aug 18, 2014 3:35 pm

FORScan Parameters of Interest:
BECM - Battery Energy Control Module
Name -FORScan Description (the use of "Hybrid" simply refers to the HV battery)
H_BATT_CHAR -Hybrid Battery State of Charge
        • Full range SOC (state of charge) which apparently should be equivalent to Dead-to-23kWh on a new battery. Resolution of .01%.
BAT_CHA_DISPL -Hybrid/EV Battery State of Charge - Displayed
        • Displayed/Customer SOC apparently calculated from H_BATT_CHAR and corresponding to about 8%-90% of full range. Maintained internally at 0.5% resolution and clipped at 100%.
BAT_TO_EMPTY_ESTIM -Hybrid/EV Battery Energy to Empty - Estimated
        • Resolution of 1 Wh. Appears to be the primary input to the Guess-o-Meter calculation (obviously without the fudge factors for recent history/climate settings...). When I ran my FFE battery down, the "Stop Safely Now" message occured just as this parameter (and the G-o-M) hit zero (even though displayed SOC still showed 4%).
BAT_PACK_VOLT -Hybrid Battery Pack Voltage
        • Resolution .01 Volt. Runs about 350V at displayed SOC of 100% (no load).
BATCURBECM -Hybrid Battery Current
        • Resolution .01 Amp
Update (11/4/14) The following PIDs were critical to diagnosing faulty cell(s):

HEV_BAT_MIN_V -Hybrid Battery - Minimum Battery Module Voltage
        • Resolution .01 Volt. Should be 4.07V at full charge
HEV_BAT_VAR_V -Hybrid Battery - Variation In Voltage Measurement Between Battery Modules
        • Resolution .01 Volt. Should be less than .02V when cells are balanced
When my new battery packs were installed I recorded the following at full/balanced charge:
H_BATT_CHAR 90.16%
BAT_TO_EMPTY_ESTIM 20028 watts
BAT_PACK_VOLT 350.27 volts
HEV_BAT_MIN_V 4.07 volts
HEV_BAT_VAR_V 0.01 volts
Last edited by GladeStorm on Fri May 01, 2015 7:02 am, edited 2 times in total.
2013 Ice Storm FFE

hybridbear
Posts: 1425
Joined: Mon Apr 07, 2014 12:46 pm
Location: Minneapolis

Re: OBD Scan Tools Info / Data

Tue Aug 19, 2014 4:31 am

GladeStorm wrote:FORScan Parameters of Interest:
BECM - Battery Energy Control Module
Name -Description
H_BATT_CHAR -Hybrid Battery State of Charge
        • Full range SOC (state of charge) which apparently should be equivalent to Dead-to-23kWh on a new battery. Resolution of .01%.
BAT_CHA_DISPL -Hybrid/EV Battery State of Charge - Displayed
        • Displayed/Customer SOC apparently calculated from H_BATT_CHAR and corresponding to about 8%-90% of full range. Maintained internally at 0.5% resolution and clipped at 100%.
If you collect some data points for each of those parameters you can calculate the equation that relates them and thus calculate exactly what range of SOC the car allows us to use. I did something similar with those two parameters for our Fusion Hybrid.
2013 Ford Focus Electric - Ice Storm - leased through 8/15/16
Replaced by a 2016 Tesla Model S 60D

GladeStorm
Posts: 67
Joined: Thu Nov 21, 2013 9:17 am
Location: TN

Re: OBD Scan Tools Info / Data

Tue Aug 19, 2014 8:21 am

Right- Michael originally posited the 8%-90% numbers and my original notepad data collection at 10% intervals over most of the range confirmed that those numbers were close. Looking at a 1 kWh burn test that I logged later--Linear regression gives me a slope corresponding to 81.96%; the intercept is a bit fuzzy due the rounding of the displayed number and what looks like a time lag (~100ms). What I'm using is:

Code: Select all

BAT_CHA_DISPL = H_BATT_CHAR * 1.2200 - 10.04
(Though it isn't clear what 100% H_BATT_CHAR really means, so...)
2013 Ice Storm FFE

hybridbear
Posts: 1425
Joined: Mon Apr 07, 2014 12:46 pm
Location: Minneapolis

Re: OBD Scan Tools Info / Data

Tue Aug 19, 2014 8:32 am

GladeStorm wrote:Right- Michael originally posited the 8%-90% numbers and my original notepad data collection at 10% intervals over most of the range confirmed that those numbers were close. Looking at a 1 kWh burn test that I logged later--Linear regression gives me a slope corresponding to 81.96%; the intercept is a bit fuzzy due the rounding of the displayed number and what looks like a time lag (~100ms). What I'm using is:

Code: Select all

BAT_CHA_DISPL = H_BATT_CHAR * 1.2200 - 10.04
(Though it isn't clear what 100% H_BATT_CHAR really means, so...)
That is where Torque would be really nice for data logging to quickly get hundreds of measurements. If only it worked with the FFE!
2013 Ford Focus Electric - Ice Storm - leased through 8/15/16
Replaced by a 2016 Tesla Model S 60D

redcelt007
Posts: 25
Joined: Sat May 10, 2014 7:25 am
Location: Little Rock, Arkansas

Re: OBD Scan Tools Info / Data

Wed Aug 20, 2014 5:47 pm

GladeStorm,
Which version of Forscan are you using? I installed the latest beta version and it won't connect to my obdlink-mx.

GladeStorm
Posts: 67
Joined: Thu Nov 21, 2013 9:17 am
Location: TN

Re: OBD Scan Tools Info / Data

Thu Aug 21, 2014 12:02 pm

Forscan: I started with the 2.1.18 beta and as of last week have been using 2.1.19 beta; no problems with either. Bluetooth problem? Does the obdlink-mx show up as being paired to your computer? Which com port? ...
2013 Ice Storm FFE

jeffand
Posts: 441
Joined: Thu Jan 31, 2013 3:26 pm
Location: WI

Re: OBD Scan Tools Info / Data

Thu Aug 21, 2014 5:02 pm

Make sure you are plugging into the correct port. Thier are two ports under the drivers side dash. One is easy to find the other is way up against the fire wall.
2013 FFE, Ingot Silver
Delivered September 2012

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