Arrange squash in a steamer basket over boiling water. Cover and steam 2 minutes. Combine squash, jicama, green pepper, and onion in a heavy-duty, zip-top plastic bag; set aside.
Combine orange juice and remaining 5 ingredients in a small bowl, stirring well. Pour juice mixture over squash mixture; seal bag, and turn until vegetables are coated. Marinate in refrigerator at least 2 hours, turning bag occasionally.
