Ice mode solution?

MotorvateDIY

Did you know the Nismo Z has a different ABS module than the rest of the 370s? ... and it might be much better?

The non-Nismo ABS module only broadcast the "side g" values (corning g forces) on the CAN bus. BUT the Nismo ABS module has "side g" and "acceleration / braking g" forces. It doesn't seem to have a sensor for braking/acceleration forces.

I wonder if this extra data can prevent ice mode?
In theory, if you are braking at 1.0+g and the wheels are moving a different speeds (like on ice), it should know it isn't "on ice" and not get into ice mode.

How did I find this out?

With the CAN bus reverse engineering I have done for the "GTR MFD Converter" that will allow any 370/G37 with nav to enable the GTR gauges, I came across this.
Below are some screen captures from the GTR MFD (actually my 2011 G37 Nav system, reconfigured for GTR gauges) showing the braking and acceleration screens with data from when I played back a CAN bus log file from a 2016 Nismo Z (6MT).

On a non-Nismo 370, the brake/acceleration screens always show 0. I looked at the CAN bus data, and it has a bunch of zeros for the braking/acceleration g forces in the data stream.



I guess the (silly) question is: Has any Nismo Z had "ice mode" at the track?
(silly, because I suspect NO ONE tracks their Nismo)

Maybe a Nismo ABS module in a non-Nismo Z the cheaper solution to ice mode???

For reference:
ABS module part numbers:
6MT 47660-3GM3B
7AT 47660-3GM1B

The 6MT Nismo ABS module is about $1400 new from Nissan
(https://parts.nissanusa.com/p/ABS-Hy...660-3GM3B.html)

One last point:
The "yaw sensor" (aka side g sensor) is the same on all 370 and G37. Either 49731-1EA1A or 49731-JK00A.
This is on a dedicated CAN bus directly to the ABS module and only senses/provides "side g" forces on that CAN bus.

This suggests the Nismo ABS module has the braking/acceleration sensor built into it.

Thoughts?

Attached Images

370Z Nismo_sm.jpeg (137.8 KB, 131 views)