Eaton Gen 1 (AutoShift) Fault Code: 46 PID: SID 37 FMI: 4 Splitter Solenoid Valve
Overview:
This code indicates an electrical failure of the solenoids that control the splitter.
Detection:
Starting at key-on and throughout operation, the Transmission Controller constantly measures this circuit. Depending on the reading, a failure mode of short to battery, short to ground, or open circuit is detected.
Fallback:
This fault causes a 9-speed fallback and the transmission stays in either LO split or HI split.
Required Tools:
1) Basic Hand Tools
2) Digital Volt/Ohm Meter
3) AutoSelect/AutoShift Troubleshooting Guide
Possible Causes:
1) Solenoid coil open or shorted
2) Damaged transmission harness
3) Malfunctioning transmission ECU
![International Truck ISIS - Oncommand Service Information Q4.2020 [04.2020]](https://www.ecuforcetruck.com/wp-content/uploads/2022/01/OnCommand-2020-1-300x300.png)
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