Abstract: A diagnostic system for a motor grader with a blade, a drawbar member, and a center shift mounting member associated with a drawbar-circle-moldboard (DCM) includes actuators connecting the blade to the DCM and interconnecting other components of the motor grader. The actuators affect movement of the blade relative to the DCM and affect movement of the other interconnected components relative to each other. Sensors generate signals indicative of a current position of the blade and positions of the other components of the motor grader. An input device receives an operator input indicative of a selection of predefined, diagnostic positions that can be checked visually by the operator for confirmation of proper operation. A controller selectively actuates the actuators based on the selection of a diagnostic position and a signal indicative of the current position of the blade to move the blade and other components of the motor grader into the selected diagnostic position.