Code 50-54

[Jabonee]

Code: 50-54: Swash Plate Not In Neutral
Description:
A Code 50-54 occurs when the Drive Controller detects the Swash Plate sensor is not in the neutral range of 2.2 – 2.8 volts. If a Code 50-54 occurs, drive will be disabled.
Possible Cause:
Hydraulic pump is not physically centered. Refer to the Service Manual.
Signal wire 3550 shorted to a ground or voltage source.
Ground wire 2600 open.
Swash Plate sensor.
Code 50-19 "Swash Plate Sensor Out Of Range High".
Code 50-20 "Swash Plate Sensor Out Of Range Low".
Code 50-35 "Servo Coil Maximum Current".
Code 50-49 "Brake Coil Short To Battery (Coil Return)".
Drive Controller.
Moisture, corrosion, or pushed back pins in the Drive Controller connectors, Swash Plate sensor connector, or wire harness. See Electrical Systems Connector Maintenance in Technical Information.
If the code is intermittent and not on at the time of testing, the cause of the code may not be found at this time. Probable causes may include: loose connections, corrosion, pushed back pins, the controller, the wire harness or a combination of these problems. Refer to Troubleshooting Intermittent Electrical Faults Procedures in Technical Information.

 

[Jabonee]

Thanks timm! I spoke with yet another mechanic the other night, this one actually seems to know what he's talking about for a change. Even though the manual in the TC calls out that the 50-54 code is a swashplate error (as does the internet...everything is true there) it is actually a differential error code. Anyway, he thinks it could be as simple as the codes never being erased when it was worked on. We are unplugging the master plug today to see if that might fix it.

No such thing as erasing codes. Unhooking plugs from drive or display controller will do nothing. It can however damage them if the Battery is not disconnected first. Active codes are the only codes displayed. If you check it it will say "NONE" All codes are stored. Last 40 of them anyway. Stored codes will not effect the machine.