WARNING: This page is about a different car, the 2002 Ford Ranger. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Identifying Pinpoint Test E: Stoplamps Are Inoperative (E1-E3)
Courtesy of FORD MOTOR CO.
Fig 2: Identifying Pinpoint Test E: Stoplamps Are Inoperative (E4)