My 01 SSEi started randomly showing the SSS message in DIC. Traction control is not being disabled, nor is there any ABS warning...just the DIC message.
I am leaning towards the SWPS after graphing its output even though as said, no DTC is present. I use Autoenginuity with GM enhanced so I can access and clear DTCs from all modules. That'* also how I graphed the position sensor A and B inputs. The B side does respond to steering activity, but it hovers at a much lower voltage than the A side. I read a document last night that will tell you all you ever want to know about this style SWPS and then some.
Sensors - Articles
Also read another page with some good info about the workings of the Stabilitrak system.
Without having a graph of a known good sensor for a baseline, I'm not sure if that low output on the B side is the issue or not.
The Yaw and lateral acceleration sensor outputs are normal. They have a 0 to 5 volt output and put out about 2.5 volts when there is no force applied to the sensor.
I've had a failed WSS before on an aftermarket hub, and it will disable TCS and ABS as indicated on the dash cluster, so I don't think a WSS is the issue. Besides, as I understand from reading up on it, the WSS does not play a part in the Stabilitrak operation. The VSS from the transaxle provides the vehicle speed for VSES purposes.
Has anyone with a Tech II ever watched the A and B inputs as the steering wheel was turned through its range?
Any help is greatly appreciated.