The 37-year-old Ypsilanti Township woman accused of killing her 6-week-old son while driving drunk appeared in the Washtenaw County Trial Court on Thursday for her final pretrial.

Constance Johnson

Constance Johnson’s attorney requested an adjournment so the defense could perform further investigation. The request was granted by Judge David Swartz.

The final pretrial was rescheduled for Aug. 8 and a jury trial was set for Oct. 15.

Johnson was charged on April 5 with homicide with a motor vehicle, involuntary manslaughter, operating while intoxicated causing death, operating with a suspended license causing death, second-degree child abuse and open alcohol container in a vehicle.

According to police, Johnson struck a pickup truck parked on Foley Avenue in Ypsilanti Township while driving a mini-van on Oct. 7. Johnson and her son, Isiah Caddell, were the only two people in the vehicle.

Sgt. Geoff Fox of the Washtenaw County Sheriff’s Office said the baby was in a standard car carrier, but he was in the front seat and not strapped in.

Police responded to a call reporting that a baby was not breathing. The infant was transported to the University of Michigan Hospital where he remained until he died on Oct. 13 due to skull fractures and brain injuries, according to Fox.

Investigators tested Johnson for chemicals on the scene. Police needed time to investigate further and get test results before any charges could be made.

Johnson was arrested April 4 and charged the next day.

Chelsea Hoedl is an intern reporter for AnnArbor.com. She can be reached at choedl@mlive.com.