Unfortunately, the OEM thinks about a lot of things we DON'T when we are trying to use this technology in a performance build. I took a class in advanced GM body electrics a couple of years ago, and BOY was it ever an eye-opener...
Here are some inputs that the BCM might be looking for in order to make decisions about power steering assist.
Vehicle speed (obvious)
Steering wheel angle
Gear position
AWD engaged
Headlights on
Wipers on
Ambient temperature
No.of occupants (air bag seat weight sensors)
ABS engaged
etc., etc., etc.
To the OEM, it's no big deal to pool all this data, because it's coming in for various other reasons as well. But, as mentioned above, if all the data parameters are NOT present, the BCM will simply go into a default mode, so the EPS will not work as designed anyway.
I'm NOT telling you not to do it, just trying to help you understand that we can't just think in terms of "I need this box, that box, and a motor" anymore...
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Ray Kaufman-Wyotech chassis fab instructor
Custom suspension design and consultation.
(Now 2) Big Block asphalt supermodified ('cause too much is never enough...)
Last edited by exwestracer; 02-09-2013 at 09:05 AM.
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