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Discover Common John Deere UIM Fault Codes and Their Solutions

Understanding John Deere UIM fault codes is crucial for maintaining the optimal performance of your equipment. The UIM (User Interface Module) in GreenStar Display 2100/2400 is essential for converting driver commands into CAN BUS messages, ensuring smooth communication and operation. Below is a detailed overview of the most common John Deere UIM diagnostic trouble codes, their occurrences, and how to address them.

Common John Deere UIM Fault Codes

  1. UIM 000168.03 – Supply Voltage (ELX) Too High
    • Occurrence: This code is triggered when the system voltage exceeds 15.5 volts for more than 5 seconds.
    • Solution: Inspect the voltage regulator, alternator, and electrical connections. Ensure all components are functioning correctly and replace any faulty parts.
  2. UIM 000168.04 – Supply Voltage (ELX) Too Low
    • Occurrence: This code occurs when the system voltage drops below 10.0 volts for more than 5 seconds.
    • Solution: Check the battery, alternator, and all electrical connections. Replace any components that are not performing as expected.
  3. UIM 000628.02 – Control Unit Internal Fault
    • Occurrence: Triggered by faults in the EEPROM of the internal module.
    • Solution: Attempt a control unit reset, inspect connections, and consult technical support if the issue persists. Replacement of the control unit may be necessary.
  4. UIM 000639.14 – ISOBUS, Very High Error Rate
    • Occurrence: This code is saved when the UIM control unit receives faulty or incomplete data from the ISOBUS.
    • Solution: Inspect ISOBUS connections, cables, and devices. Update firmware and monitor communication traffic to identify and resolve issues.
  5. UIM 523526.10 – Button J Defective
    • Occurrence: Triggered if Button J remains actuated for more than 60 seconds during initialization or 10 minutes during operation.
    • Solution: Inspect and clean Button J. Test its functionality and replace if defective. Check associated wiring and connections.

Where These Codes Occur

These error codes are predominantly found in the UIM of John Deere’s GreenStar Display 2100/2400 systems. The UIM is responsible for processing user inputs via the keyboard, converting these commands into CAN BUS messages, and transmitting them to the VTI (Vehicle Terminal Interface). Proper functioning of the UIM is vital for seamless equipment operation and avoiding interruptions caused by faulty inputs or communication errors.

Regular maintenance and prompt addressing of any detected UIM fault codes ensure the longevity and reliability of your John Deere equipment. Keeping the control unit firmware updated and regularly inspecting electrical connections can prevent many of these common issues.

For more detailed information on each code and its specific troubleshooting steps, consult your John Deere service manual or technical support.

  • UIM 523528.10 – Button H Defective

    John Deere

    This diagnostic trouble code is triggered if Button H remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the button is registered as “actuated” for more than 10 minutes during…

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  • UIM 523527.10 – Button I Defective

    John Deere

    This diagnostic trouble code is triggered if Button I remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the button is registered as “actuated” for more than 10 minutes during…

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  • UIM 523526.10 – Button J Defective

    John Deere

    This diagnostic trouble code is triggered if Button J remains continuously actuated for more than 60 seconds during initialization (after the ignition has been switched on), or if the button is registered as “actuated” for more than 10 minutes during…

    READ MORE

  • UIM 000639.14 – ISOBUS, Very High Error Rate

    John Deere

    This diagnostic trouble code is saved when the data received by the UIM control unit from the ISOBUS are faulty or incomplete. This indicates a problem with the ISOBUS communication network.

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  • UIM 000629.12 – Control Unit Internal Fault

    John Deere

    This diagnostic trouble code is triggered when an internal fault occurs in the UIM control unit. This indicates that the control unit has detected an internal error that affects its normal operation.

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  • UIM 000628.02 – Control Unit Internal Fault

    John Deere

    This diagnostic trouble code is triggered when a fault occurs within the internal module, specifically the EEPROM (Electrically Erasable Programmable Read-Only Memory). The EEPROM is critical for storing configuration settings and data. A fault in this component indicates a significant…

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  • UIM 000168.04 – Supply Voltage (ELX) Too Low

    John Deere

    This diagnostic trouble code is triggered when the system voltage (ELX) drops below 10.0 volts for more than 5 seconds. This condition suggests that the electrical system is experiencing lower than normal voltage levels, which can affect the performance of…

    READ MORE

  • UIM 000168.03 – Supply Voltage (ELX) Too High

    John Deere

    This diagnostic trouble code is triggered when the system voltage (ELX) exceeds 15.5 volts for more than 5 seconds. This condition indicates that the electrical system is experiencing higher than normal voltage levels, which can be detrimental to various components.

    READ MORE

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