OBD Fusion Update
- Thread starter Drocca92
- Start date
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- 2017 CX3 AWD
I looked at the developer's site and it seems to mean dealer-level diagnostic. Previously, their Mazda add-on covered model years 1996 through 2024.
www.obdsoftware.net
Mazda Enhanced Diagnostics for Windows | OBDSoftware.net
The Mazda enhanced diagnostics add-on provides access to ABS, airbag, transmission, body, and many other enhanced systems on Mazda vehicles.
You need the enhanced diagnostics to display things like individual tire pressures, short and long-term fuel trims and hundreds of other PID's
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- 2017 CX3 AWD
That's very neat! Does it show a second coolant temp value?
You can view rear diff engagement as well. Forscan being discussed here but you can also view with OBD Fusion/Link. Be sure to double the value shown to see correct percentage of engagement.
I can offer on my 2019 I use the FORscan app and have the "4x4 module coupling solenoid duty cycle" displayed on my daily drive page. It typically reads 7.45% under normal dry good traction driving. I interpret that to mean under normal driving, I'm getting 92.55% of the power to the front wheels and 7.45% to the rear wheels.
On a slightly snowy morning a few weeks ago, I was purposely being aggressive with throttle brake and steering...
I can offer on my 2019 I use the FORscan app and have the "4x4 module coupling solenoid duty cycle" displayed on my daily drive page. It typically reads 7.45% under normal dry good traction driving. I interpret that to mean under normal driving, I'm getting 92.55% of the power to the front wheels and 7.45% to the rear wheels.
On a slightly snowy morning a few weeks ago, I was purposely being aggressive with throttle brake and steering...
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- W WA
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- 2024 CX-5 Premium
The enhanced diagnostics aren't needed to see the second coolant temp value as two coolant temp values are included in the standard ODBII data points.
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- 2017 CX3 AWD
Thank you that's good to know!
The only 4WD related sensor I found in the Car Scanner Pro app is the coupling solenoid duty cycle with a % value. It was fluctuating between 1% and 14% for the most part of my 2-hr drive this morning. It never showed a steady value.
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It won't stay steady, the solenoid is very active constantly adjusting torque split.Thank you that's good to know!
The only 4WD related sensor I found in the Car Scanner Pro app is the coupling solenoid duty cycle with a % value. It was fluctuating between 1% and 14% for the most part of my 2-hr drive this morning. It never showed a steady value.
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- 2017 CX3 AWD
Thank you! I noticed this morning that it was around 7-9% at highway speed and 16% when 30 mph. On a longer drive yesterday, the log shows fluctuation up to 55%.
Sorry to OP about the detour.
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I was told in the past you had to double the percentage to get accurate distribution but maybe that is no longer the case
The percentage is a measurement of the duty cycle of the solenoid but does not have a correlation to a torque distribution amount that would be easily correlated unless you had access to the maps in the 4wd module. Amperage on the solenoids are generally 0-3 amps, the higher the amperage the higher the amount the electromagnetic clutch set pushes against the main clutches. For example, you are at highway speed with very little engine torque being produced, if the module called for a '50/50' split it takes a lot less clutch engagement to hit that number vs a hard launch where it requires a large amount of clutch application to achieve the same split.
