John Deere error SSU codes
This diagnostic trouble code (DTC), SSU 523810.01, is triggered when the control unit measures too low an amperage at the connecting leads 4043/4061 for the steering valve Y49. This indicates that the circuit is open.
- John Deere error SSU codes
This diagnostic trouble code (DTC), SSU 523795.12, is triggered when the steering control valve (Y49) sends error information to the SSU control unit. The error can occur for various reasons, including a short in the 5-volt power supply to the steering control valve or an open circuit.
- John Deere error SSU codes
This diagnostic trouble code (DTC), SSU 523795.11, is triggered when the Steering System Control Unit (SSU) detects that the electro-hydraulic steering valve’s left and right deadband values differ significantly during calibration (greater than 4 counts difference). This indicates an inconsistency in the valve’s operation.
- John Deere error SSU codes
This diagnostic trouble code (DTC), SSU 523795.02, is triggered when a left/right discrepancy is detected during calibration, or if the signal from the wheel angle sensor is too low at full lock in either direction. This indicates that the hydraulic lines may be mixed up at the steering cylinder.
- John Deere error SSU codes
This diagnostic trouble code (DTC), SSU 523789.02, is triggered when the Steering System Control Unit (SSU) detects that the wheel angle sensor (flow meter or axle) is not responding upon powering up. This indicates that the sensor is either malfunctioning or not communicating with the SSU.
- John Deere error SSU codes
This diagnostic trouble code (DTC), SSU 523768.09, is triggered when the Steering System Control Unit (SSU) detects that the front axle type message is not available on the CAN Bus. This indicates a communication issue with the axle type information on the CAN Bus network.
- John Deere error SSU codes
This diagnostic trouble code (DTC), SSU 523767.14, is activated when the AutoTrac resume switch is actuated for more than 15 seconds. On tractors with CommandArm, switch S123/2 is installed; on tractors without CommandArm, switch S142 is installed. This indicates a fault in the switch, as it should not remain engaged for such an extended period.
- John Deere error SSU codes
This diagnostic trouble code (DTC), SSU 523767.02, is triggered when a faulty engagement signal is detected from the switch that activates AutoTrac. The switch consists of a changeover contact that allows the engagement signal to be checked. On tractors with CommandArm, switch S123/2 is installed; on tractors without CommandArm, switch S142 is installed.
