In 5- to 6-quart Dutch oven, heat oil over medium-high heat. Add celery, carrots and garlic; cook 5 to 7 minutes, stirring frequently, until carrots are crisp-tender.
Stir in tomatoes, breaking up tomatoes coarsely. Stir in water, basil, pepper and broth. Heat to boiling. Reduce heat to low; cover and simmer 1 hour, stirring occasionally.