Is there a command?

I have 4 Z stepper motors.
Is there a command that I can move just one motor?
The reason why I want to do this is because, Z3 will not move.
The brake turns on (Z3) when i try to move Z axis. All other motors turn as expected.
It's not the Stepper Driver, motor or wiring, I have swapped Z's around and it's only the Z3.
I am running an SKR 1.4Turbo and BTT_EXT_MOD

Thanks

no, with all dual axis, each stepper gets the same steps and directions lines as all the other steppers.



to test it dont enable lhe the 4 Z's and enable them all as extruders.
enable cold extrusion
change to the tool T0- T4
test moving E

It took a lot of effort to get the multi extruder setup, and I was finally successful.
I did get the same result, Motor 1 on BTT_EXT_MOD will not turn.
I verified all circuits are good. The only thing i can fid that is different from the other drivers is:
1. Pin 7 (step pin), of the TMC2209 reads 2.3Volts
All other good TMC2209 reads 3.3Volts

My only guess is that the BTT_EXT_MOD driver is not properly written.
Marlin 2.0.7.2 Does not support the EXT_MOD at all.
Only the BugFix versions supports it.