Accessing Active Diagnostic Trouble Codes

NOTE: The engine does not need to be running to navigate the diagnostic gauge screens. If engine start up is desired, see Starting The Engine in the Engine Operation Section. All of the engine values illustrated on the diagnostic gauge indicate the engine is running.

For description of diagnostic trouble codes, see Diagnostic Trouble Codes (DTCs) — Listing in the Troubleshooting Section.

  1. RG13172
    RG13172-UN-26SEP03

    Normal Operation

    During normal operation the single or four parameter screen will be displayed.


  2. RG13240
    RG13240-UN-30SEP03

    Active Diagnostic Trouble Codes Displayed

    When the diagnostic gauge receives a diagnostic trouble code from an engine control unit, the single or four parameter screen will be replaced with the "Warning" message. The SPN and FMI number will be displayed along with a description of the problem and the corrective action needed.

    IMPORTANT: Ignoring active diagnostic trouble codes can result in severe engine damage.


  3. RG13241
    RG13241-UN-30SEP03

    Use Arrow Keys To Scroll

    If the word "Next" appears above the arrow keys, there are more diagnostic trouble codes that can be viewed by using the arrow keys to scroll to the next diagnostic trouble code.


  4. IMPORTANT: Ignoring active diagnostic trouble codes can result in severe engine damage.

    RG13242
    RG13242-UN-30SEP03

    Hide Diagnostic Trouble Codes

    To acknowledge and hide the code and return to the single or four parameter display, press the "Enter" Key.


  5. RG13176
    RG13176-UN-26SEP03

    Active Diagnostic Trouble Code Icon

    The display will return to the single or four parameter display, but the display will contain the warning icon. Pressing the "Enter" key will redisplay the hidden diagnostic trouble code.


  6. IMPORTANT: Ignoring active diagnostic trouble codes can result in severe engine damage.

    RG13242
    RG13242-UN-30SEP03

    Enter Key

    Pressing the "Enter" key once again will hide the diagnostic trouble code and return the screen to the single or four parameter display.


  7. RG13243
    RG13243-UN-01OCT03

    Active Diagnostic Trouble Code Condition

    The single or four parameter screen will display the warning icon until the diagnostic trouble code condition is corrected.

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