No Reverse
WARNING: This page is about a different car, the 2002 Ford Escape, 2001 Mazda Tribute, and 2001 Ford Escape. However, it is still accessible from the selected car via links, so may be relevant.
Check external and internal shift linkage, low line pressure, valve body (stuck valve), oil pump internal leak (No. 6 and 7 sealing rings), reverse clutch assembly, low/reverse clutch assembly, forward/coast/direct clutch cylinder, case (oil passages cross leakage or porosity) and reverse/overdrive gear set.