Combine 1 1/2 teaspoons chili powder, coriander, 3/4 teaspoon garlic powder, salt and pepper in small bowl; mix well.
Brush ribs with 2 tablespoons maple syrup; rub with spice mixture. Place ribs in Instant Pot.
Combine tomato sauce, remaining 2 tablespoons maple syrup, 11/2 teaspoons chili powder, 1/2 teaspoon garlic powder, cinnamon and ginger in medium bowl; mix well. Pour over ribs in pot; stir to coat ribs with sauce.
Secure lid and move pressure release valve to Sealing position. Press Manual; cook at high pressure 25 minutes.
When cooking is complete, use natural release for 10 minutes, then release remaining pressure. Remove ribs to plate; cover loosely to keep warm.
Press Sauté; cook sauce about 10 minutes or until thickened.
Brush ribs with sauce; serve remaining sauce on the side.