i can't say 100% because it's been awhile. I wasn't running anything new, just re-routing RCAs. I had the console out which now has we wondering about the yaw sensor. The light has been on since that day. I lived with the light on for quite awhile. I was nieve and thought the VSA was only the steering assist and not a component affecting other aspects of performance.
I have spent a lot of time troubleshooting the past few days while waiting for an appointment for the mechanic to scan for codes. I've gone through a lot of the VSA testing steps in the shop manual. I've verified voltage and continuity at the 46p connector, cleaned and reconnected ground points, verified voltage at the VSA Off switch, looked at every fuse a minimum of 6 times, both underhood and below dash.
There are 3 main options left according to the manual... The VSA module, the steering sensor or the yaw sensor.
Knowing I had the console out and that's the location of the yaw sensor, it has me leaning this way.
I really expected to find a problem with voltage or short at the off switch or module since this happened at the time I was under the dash.
When there's a statement "the yaw sensor is sensitive", that leaves a lot of questions... Sensitive as in don't bump it or closer to don't drop it on the ground? Considering the likely condition I was in at that time, I wouldnt have removed it but I bet I wasn't thinking there was a sensor to worry about...