HEAT vegetable oil in large saucepan over medium-high heat. Add onion, bell pepper and garlic; cook, stirring frequently, for 5 to 7 minutes or until tender. Add turkey; cook until browned. Drain.
ADD tomatoes with juice, pumpkin, tomato sauce, beans, chiles, corn, chili powder, cumin and black pepper. Bring to a boil. Reduce heat to low. Cover; cook, stirring occasionally, for 30 minutes.