Vehicle Speed Signal

The Vehicle Speed Signal (VSS) circuit to the sunroof actuator is used to assist in the closing of the sunroof glass while driving. When requesting to close the sunroof glass while driving at high speeds, the sunroof actuator will compensate for the resistance against the sunroof glass. If there is no VSS signal and the sunroof actuator detects a resistance in the sunroof glass closure, the sunroof actuator may stop and reverse back (see Anti-Pinch Guard).