Eaton Gen 1 (AutoShift) Fault Code: 52 PID: PID 59 FMI: 2 Gear Select Sensor
Overview:
This code indicates an electrical failure of the rail select sensor on the electric shifter.
Detection:
Starting at key-on and throughout operation, the Transmission Controller constantly monitors the feedback from the sensor. If the feedback is below 10% or above 90% of the sensor’s full value, the fault code is set. This type of failure represents a short to ground or battery. The Transmission Controller also monitors the sensor feedback for a zero value, indicating an open circuit.
Fallback:
This fault causes an In Place fallback.
Required Tools:
1) Basic Hand Tools
2) Digital Volt/Ohm Meter
3) AutoSelect/AutoShift Troubleshooting Guide
Possible Causes:
1) Damaged Transmission harness
2) Mechanical connection failure in electric shifter
3) Malfunctioning gear select sensor
4) Malfunctioning transmission ECU
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