S90 & V90
- Connect electrical connections to motor without installing motor to frame. Run motor to sun roof OPEN position until motor stops (about 4-5 seconds). Run motor to sun roof CLOSED position until motor stops (about 4-5 seconds).
- Mark position where motor stops at full CLOSED position. Run motor forward to VENT position until motor stops. Run motor rearward to CLOSED position and motor stops (about 1-2 seconds).
- Mark position where motor stops. Second mark should stop in same place as first mark. If marks do not line up, depress center button on motor gear and turn to position between two marks with a screwdriver.
Courtesy of VOLVO CARS OF NORTH AMERICA