STOCKTON — A preliminary hearing has been scheduled next week for a former Franklin High School volunteer wrestling coach accused of having a sexual relationship with a 16-year-old girl.Philip Maglaya Jr. will go before Judge Michael Mulvhill at 8:30 a.m. Tuesday in Department 7B, six months after being arrested in August in connection with a weeklong disappearance of the minor.Maglaya, 27, continues to be held at the San Joaquin County Jail on $1.3 million bail.