Eaton Gen 1 (AutoShift) Fault Code: 72 PID: SID 59 FMI: 7 Failed To Select Rail

Overview:
This code indicates the transmission is unable to select the required rail during a shift.

Detection:
The transmission detects this by attempting the same shifter actions five times and not sensing the desired position.

Fallback:
This causes an In Place fallback.

Required Tools:
1) Basic Hand Tools
2) Digital Volt/Ohm Meter
3) AutoSelect/AutoShift Troubleshooting Guide

Possible Causes:
1) Low power to rail motor
2) Failed rail select motor
3) Failed rail select sensor
4) Failed or misaligned shift block
5) Malfunctioning transmission ECU