Failure Conditions:

WARNING: This page is about a different car, the 1995 Cadillac Eldorado. However, it is still accessible from the selected car via links, so may be relevant.

Gear ratio between 1.54-1.71 for 5 seconds, 1st gear commanded.
Gear ratio between 2.87-3.11 for 5 seconds, 2nd gear commanded.
Gear ratio between 0.67-0.71 for 5 seconds, 3rd gear commanded.
Gear ratio between 0.95-1.05 for 5 seconds, 4th gear commanded.