Pinpoint Test C Chart - No Communication With Four-Wheel Drive Control Module (4WD)
WARNING: This page is about a different car, the 2003 Ford Expedition. However, it is still accessible from the selected car via links, so may be relevant.
Fig 1: Pinpoint Test C Chart - No Communication With Four-Wheel Drive Control Module (4WD) (C1)
Courtesy of FORD MOTOR CO.
Fig 2: Pinpoint Test C Chart - No Communication With Four-Wheel Drive Control Module (4WD) (C1-C3)