The DSM receives commands from the driver via the selection wheel and the keyboard and sends them to the DTI via the CAN Bus. Depending on the equipment of the tractor, the keys are:
• Confirm
• Cancel
• Main menu
• Transport lock (EICVs)
• Selective control valve
• Transport lock (ESCVs)
• On/off for automatic mode of front wheel
drive
• On/off for front wheel
drive
• HMS Plus
• Transmission
• Engine
• Rear PTO
• Rate of drop
• Load/depth adjustment
• Raise limit

John Deere DSM fault codes / John Deere DSM diagnostic trouble codes
NOTE:This page only indicates the meaning of the fault codes. For complete troubleshooting information, see the technical manuals.
DSM 000168.03 (DSM 168.03)— Control Unit, Supply Voltage Too High
This diagnostic trouble code is triggered when the control unit registers a supply voltage in excess of 16 volts.
DSM 000168.04 (DSM 168.04)— Control Unit, Supply Voltage Too Low
This diagnostic trouble code is triggered when the control unit registers a supply voltage of less than 9 volts.
DSM 000628.02 (DSM 628.02)— Control Unit Internal Fault
If a fault occurs when the internal module (EEPROM) intervenes, diagnostic trouble code EPC 000628.02 is triggered.
DSM 000629.12 (DSM 629.12)— Control Unit Internal Fault
This diagnostic trouble code is triggered if an electronic malfunction is registered in the control unit.
DSM 000639.14 (DSM 639.14)— Vehicle CAN BUS, Very High Error Rate
The diagnostic trouble code is generated when the control unit receives too many incorrect CAN BUS messages or when it detects a general problem in the connection to the vehicle CAN BUS.
DSM 523523.10 — Hotkey 13, Fault
This diagnostic trouble code is triggered if the key remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the key is registered as ”actuated” for more than 10 minutes during operation.
DSM 523524.10 — Hotkey for Raise Limit, Fault
This diagnostic trouble code is triggered if the key remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the key is registered as ”actuated” for more than 10 minutes during operation.
DSM 523525.10 — Hotkey for Load/Depth Adjustment, Fault
This diagnostic trouble code is triggered if the key remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the key is registered as ”actuated” for more than 10 minutes during operation.
DSM 523526.10 — Hotkey for Rate of Drop, Fault
This diagnostic trouble code is triggered if the key remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the key is registered as ”actuated” for more than 10 minutes during operation.
DSM 523527.10 — Engine Hotkey, Fault
This diagnostic trouble code is triggered if the key remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the key is registered as ”actuated” for more than 10 minutes during operation.
DSM 523528.10 — Hotkey for Rear PTO Speed, Fault
This diagnostic trouble code is triggered if the key remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the key is registered as ”actuated” for more than 10 minutes during operation.
DSM 523529.10 — Transmission Hotkey, Fault
This diagnostic trouble code is triggered if the key remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the key is registered as ”actuated” for more than 10 minutes during operation.
DSM 523530.10 — Key for Engaging/Disengaging FrontWheel Drive, Fault
This diagnostic trouble code is triggered if the key remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the key is registered as ”actuated” for more than 10 minutes during operation.
DSM 523531.10 — Hotkey for HMS, Fault
This diagnostic trouble code is triggered if the key remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the key is registered as actuated for more than 10 minutes during operation.
DSM 523532.10 — Key for Engaging/Disengaging FrontWheel Drive Automatic Mode, Fault
This diagnostic trouble code is triggered if the key remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the key is registered as ”actuated” for more than 10 minutes during operation.
DSM 523533.10 — Transport Lock Button (EICVs), Fault
This diagnostic trouble code is triggered if the key remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the key is registered as ”actuated” for more than 10 minutes during operation.
DSM 523534.10 — Hotkey for Selective Control Valves, Fault
This diagnostic trouble code is triggered if the key remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the key is registered as ”actuated” for more than 10 minutes during operation.
DSM 523535.10 — Transport Lock Button (ESCVs), Fault
This diagnostic trouble code is triggered if the key remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the key is registered as ”actuated” for more than 10 minutes during operation.
DSM 523536.10 — Confirm Button, Fault
This diagnostic trouble code is triggered if the key remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the key is registered as ”actuated” for more than 10 minutes during operation.
DSM 523537.10 — Abort Button, Fault
This diagnostic trouble code is triggered if the key remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the key is registered as ”actuated” for more than 10 minutes during operation.
DSM 523538.10 — Main Menu Button, Fault
This diagnostic trouble code is triggered if the key remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the key is registered as ”actuated” for more than 10 minutes during operation.
DSM 523609.10 — Hotkey 15, Fault
This diagnostic trouble code is triggered if the key remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the key is registered as ”actuated” for more than 10 minutes during operation.
DSM 523610.10 — Hotkey 14, Fault
This diagnostic trouble code is triggered if the key remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the key is registered as ”actuated” for more than 10 minutes during operation.
DSM 523910.02 — Control Unit Internal Fault
This diagnostic trouble code is triggered if an internal memory fault occurs while data is being saved.
DSM 600006.13 — Diagnostic Trouble Code Not Known
This diagnostic trouble code is triggered by the CommandCenter (DTI) when the DTI receives a DSM diagnostic trouble code via the CAN BUS that is not stored in the DTI memory. This ”general” diagnostic trouble code enables the CommandCenter (DTI) to display information relating to this unknown DSM diagnostic trouble code.