Hmm...I looked at the service manual more there is a steering initialization process the BCM goes through when there is a reset/loss of power. It seems that BCM is looking at a series a pulses depending on the angle and direction the wheel is turned. Any erratic pulses will cause a fault...
Actually...what do the other two wires on the connector do? Power and ground?
I'm kinda thinking you can just fool it with a properly connected voltage divider.
I always thought cutting one of the wires was to cause a fault and totally disable the SWAS.
From what I see above, I think to truly fool it and see that there is no angle change at all you need A & E to be 0.25-0.75V and C & D to be at 4-4.75V constantly.