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Scangauge GPH


HannahWCU
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I got my scangauge back from having its software updated to 4.10. I installed it into my CMax today (for the first time) and found an issue I am hoping someone might be able to help me with.  When the CMax is running in EV mode the GPH (Gallons Per Hour) is reading 0.06.  How do you "zero" this out? 

 

Also, I thought I saw somewhere where someone posted the xgauge codes for SOC (State of Charge) but I can't seem to find it.  Any help on either of these issues would be GREATLY appreciated. 

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Lithium batteries have a very flat voltage curve. In other words, the voltage shows high when the battery is at 100%, and low when it's near empty, but between 90% and 10% there's almost no measurable change in voltage. You get voltage sag from high current draw, but again, that doesn't correlate much with state of charge. So while it may be mildly interesting to know the voltage, it's probably not useful for measuring state of charge.

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Did anyone get any more C Max codes?  I got inside air temperature and HV battery volts, but that's it.  Thanks

 

Whats the codes for Air Temp and HV Battery Volts?

 

The SOC from the link above seems to work ok, BUt I have seem the SOC as low as 5 on the scangauge with a what seems about 15%=20% left on the CMAX gauge.

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  • 7 months later...

Hi folks.  It is good to find some Scangaugers.  Mine limits out at 0.06 GPH.  I'm guessing that the reason GPH never shows a 0.00, zero, is because when the gasoline engine is not running, the design has a little fuel recycle through the fuel line to keep fresh fuel immediately available when needed.  I find these SCANGAUGE numbers are more quickly responsive than the C-Max graphics.

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I had a problem when running my scangauge.  The VHR (Vehicle Health Report) would not run while the scangauge was plugged in.  Anyone else have this problem?

 

I also found that not all the FFH codes worked.  At least for me they didn't.  SOC worked (I have another thread on this http://fordcmaxhybridforum.com/topic/1927-interesting-information-on-the-high-voltage-battery/).  Battery temp seemed to work.  Inside air temperature seemed off to me. Anyone have the same problems?

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I also found that not all the FFH codes worked.  At least for me they didn't.  SOC worked (I have another thread on this http://fordcmaxhybridforum.com/topic/1927-interesting-information-on-the-high-voltage-battery/).  Battery temp seemed to work.  Inside air temperature seemed off to me. Anyone have the same problems?

 

Most of the Scangauge codes didn't work for me.  The three that did were State of Charge, Battery Temperature, and Inside Temperature.

 

My best guess as to the inside temperature is that it's a sensor somewhere in the back near the battery fans.  If you're using A/C to cool the cabin the temperature in the back will lag the temperature in the driver's seat for quite some time.  That's how mine behaves.

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I had a problem when running my scangauge.  The VHR (Vehicle Health Report) would not run while the scangauge was plugged in.  Anyone else have this problem?

 

I also found that not all the FFH codes worked.  At least for me they didn't.  SOC worked (I have another thread on this http://fordcmaxhybridforum.com/topic/1927-interesting-information-on-the-high-voltage-battery/).  Battery temp seemed to work.  Inside air temperature seemed off to me. Anyone have the same problems?

It has been discovered that any device plugged into the OBD port will prevent you from running a VHR.

 

Most of the Scangauge codes didn't work for me.  The three that did were State of Charge, Battery Temperature, and Inside Temperature.

 

My best guess as to the inside temperature is that it's a sensor somewhere in the back near the battery fans.  If you're using A/C to cool the cabin the temperature in the back will lag the temperature in the driver's seat for quite some time.  That's how mine behaves.

The XGauge I use most is the one that shows the amps of current flowing in or out of the battery. I find this very useful while driving to help me maximize fuel economy as discussed in the thread on the FFH Forum I linked above. HVB temp also works. SOC returns strange numbers for me but I found a discrepancy in the set of XGauge numbers I was provided by Linear Logic and what someone else posted on the C-Max Energi Forum in the MTH (math) section of the code. I'm guessing my data has an incorrect math calculation. FSI & FSD (Fan Speed Indicated/Demanded) also work to show when the HVB fans are running. HBV also works to show the voltage of the HVB pack. This is neat to watch how the voltage decreases when discharging and increases when charging. Typically pack voltage is around 280 when driving in EV Mode and about 285-290 when charging through regen braking or when the ICE is on.

 

I have not yet entered the code for the ambient air temperature. I don't think I have seen that coding either. Can someone please post it here or show me where it is available? I probably am just missing it hiding in plain sight, sorry...and thanks!

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It has been discovered that any device plugged into the OBD port will prevent you from running a VHR.

 

The XGauge I use most is the one that shows the amps of current flowing in or out of the battery. I find this very useful while driving to help me maximize fuel economy as discussed in the thread on the FFH Forum I linked above. HVB temp also works. SOC returns strange numbers for me but I found a discrepancy in the set of XGauge numbers I was provided by Linear Logic and what someone else posted on the C-Max Energi Forum in the MTH (math) section of the code. I'm guessing my data has an incorrect math calculation. FSI & FSD (Fan Speed Indicated/Demanded) also work to show when the HVB fans are running. HBV also works to show the voltage of the HVB pack. This is neat to watch how the voltage decreases when discharging and increases when charging. Typically pack voltage is around 280 when driving in EV Mode and about 285-290 when charging through regen braking or when the ICE is on.

 

I have not yet entered the code for the ambient air temperature. I don't think I have seen that coding either. Can someone please post it here or show me where it is available? I probably am just missing it hiding in plain sight, sorry...and thanks!

 

I don't remember exactly where i found these, but they are for the FFH. I have not tried them all:

 

Hv  Battery State-of-Charge: units %

TXD: 07E4224801

RXF: 046245480601

RXD: 3010

Mth : 000100050000

NAM: SOC [35%-70%]

 

Hv  Battery Voltage: units Volts

TXD: 07E422480D

RXF: 04624548060D

RXD: 3010

Mth : 000100010000

NAM: HVB

 

Hv  Battery Temp: units degrees F

TXD: 07E4224800

RXF: 046285480600

RXD:3008

Mth : 00120001FDBC

NAM: BaT

 

Maximum Discharge Power Limit: units kW

TXD: 07E4224815

RXF: 046245480615

RXD: 3008

Mth : 001900010000

NAM: MxD

 

Maximum Charge Power Limit: units kW

TXD: 07E4224816

RXF: 046245480616

RXD: 3008

Mth : 001900010000

NAM: MxC

 

Average Battery Module Voltage: units Volts

TXD: 07E4224841

RXF: 046245480641

RXD:3010

Mth : 0001000A0000

NAM: AvM

 

Inside Car Temp: units degrees F

TXD: 07E422DD04

RXF: 046285DD0604

RXD: 3008

Mth : 00120001FE70

NAM: InT

 

 

Hv  Battery State-of-Charge: units %

TXD: 07E4224801

RXF: 046205480601

RXD: 3008

Mth : 000850064FFB0

NAM: SoC [0%-100%]

 

Battery Age: units months

TXD: 07E4224810

RXF: 046285480610

RXD: 3010

Mth : 000100140000

NAM: age

 

Transmission Temp: units degrees F

TXD: 07E1221E1C

RXF: 0462851E061C

RXD: 3010

Mth : 000900080140

NAM: TFT

 

Hv  Current: units amps

TXD: 07E122480B

RXF: 04628548060B

RXD: 3010

Mth : 000100050000

NAM: AMP

 

Motor Electronics Coolant Temp: units degrees F

TXD: 07E1224832

RXF: 046285480632

RXD: 3008

Mth : 001200010140

NAM: MeT

 

Engine run time: units minutes

TXD: 07E122F41F

RXF: 046245F4061F

RXD: 3010

Mth : 001900100000

NAM: TmE

 

Generator Inverter Temp: units degrees F

TXD: 07E122481E

RXF: 04628548061E

RXD: 3010

Mth : 00120001140

NAM: GnT

 

 

 

Motor Inverter Temp: units degrees F

TXD: 07E1224824

RXF: 046285480624

RXD: 3010

Mth : 001200010140

NAM: MoT

 

Generator Speed: units RPM

TXD: 07E1224821

RXF: 046205480621

RXD: 3010

Mth: 000100010000

NAM: GnR

 

Motor Speed: units RPM

TXD: 07E1221E2C

RXF: 0462051E062C

RXD: 3010

Mth: 000100010000

NAM: MtR

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  • 2 weeks later...

Lithium batteries have a very flat voltage curve. In other words, the voltage shows high when the battery is at 100%, and low when it's near empty, but between 90% and 10% there's almost no measurable change in voltage. You get voltage sag from high current draw, but again, that doesn't correlate much with state of charge. So while it may be mildly interesting to know the voltage, it's probably not useful for measuring state of charge.

Not true. I work with lithium batteries all day long in my ebike drive system business. They actually follow a very linear voltage drop from 100% to 20% (they should never go below 20%).

 

I can say that is true for lithium polymer batteries.

 

It is Nicad batteries that have a very flat discharge curve. They are strong right untill they are at around 10% SOC. Then they fall off tremendously.

 

Matt

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