Normal Operation
WARNING: This page is about a different car, the 2004 Lincoln Aviator. However, it is still accessible from the selected car via links, so may be relevant.
The variable assist power steering (VAPS) module sends the VAPS solenoid a 12 volt reference voltage through circuit 412 (OG/LB). The VAPS solenoid sends a feedback voltage to the VAPS module, (depending on power steering assist demand), through circuit 413 (LG).