WARNING: This page is about a different car, the 2003 Mercury Marauder, 2003 Mercury Grand Marquis, and 2003 Ford Crown Victoria. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Diagnostic Chart - Engagement Concern: No Forward (1 Of 2)
Courtesy of FORD MOTOR CO.
Fig 2: Diagnostic Chart - Engagement Concern: No Forward (2 Of 2)