Failure Conditions:

Case 1 - Gear ratio 0.65-0.71 for 5 seconds. 1st gear commanded.
Case 2 - Gear ratio 0.95-1.05 for 5 seconds. 2nd gear commanded.
Case 3 - Gear ratio 1.54-1.71 for 5 seconds. 3rd gear commanded.
Case 4 - Gear ratio 2.87-3.11 for 5 seconds. 4th gear commanded.