WARNING: This page is about a different car, the 2003 Lincoln Aviator. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Pinpoint Test A: The Audio Unit is Inoperative (Step A1)
Courtesy of FORD MOTOR CO.
Fig 2: Pinpoint Test A: The Audio Unit is Inoperative (Step A1 Cont.)
Courtesy of FORD MOTOR CO.
Fig 3: Pinpoint Test A: The Audio Unit is Inoperative (Step A2)