RAIL AS-LH 5396468 - Caterpillar

Determining Diagnostic Trouble Codes
Using the Information Display to Determine Diagnostic Trouble Codes
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Typical screen for the Information Display for accessing diagnostics
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(1) "Machine" button
Press the "Machine" button located on the right side of the display. The Machine menu page will appear.
Press "Diagnostics". Diagnostics will highlight in yellow. The Diagnostics page will appear
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Typical "Diagnostics Event" page
(1) "Up" and "Down" arrow buttons
If Events appear on the Diagnostics page, navigate the Events list by pressing the "Up" and "Down" arrow buttons. Each Event will highlight in yellow as the arrow buttons are pushed.
Press the "OK" button to view a highlighted Event. The Events Detail page will appear with additional information.
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Typical Diagnostics Detail page
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(1) Information Banner area
If a machine Event occurs, an alert or a machine fault message will appear in the Information Banner located across the bottom of the screen.
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(1) Up and Down arrow buttons
(2) Back button
Press the "Information Banner" area and the Diagnostics Events page will appear. The Event will appear on this page. If several Events are listed on the page, scroll through the list by pressing the "Up"" or "Down" arrows. Each Event will highlight in yellow as the arrow buttons are pushed.
Press the "OK" button to view the highlighted Event. The Detail page will appear with additional information.
Press the "Back" button to return to the previous menu. Note: The codes and events that are displayed in the Diagnostics option may be viewed at any time.Using Cat Electronic Technician (Cat ET) to Determine Diagnostic Trouble Codes
Connect the Cat Electronic Technician (Cat ET) to the machine. Turn the key start switch to the RUN position. Start the Cat ET. The Cat ET will initiate communications with the Electronic Control Modules on the machine. After communication has been established, the Cat ET will list the Electronic Control Modules. Choose the desired Electronic Control Module. After the diagnostic trouble codes have been determined with the Cat ET, see the test procedure for the corresponding diagnostic trouble code.Reference: Troubleshooting, "Service Tools"Active Diagnostic Trouble Codes
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Typical Cat ET screen for active diagnostic trouble codes
The following procedures may cause new diagnostic trouble codes to be logged. Therefore, before any procedures are performed, make a list of all the active diagnostic trouble codes to determine the system problems. Clear the diagnostic trouble codes that were caused by the procedure, when each procedure is complete.Note: Before performing a procedure, always check all the circuit breakers. Repair the cause of any circuit breaker that is tripped.A screen is provided in Cat ET for active diagnostic trouble codes. The screen will display the diagnostic trouble codes that are active. Active diagnostic information shall include a component identifier (CID), a failure mode identifier (FMI) and a text description of the problem.Logged Diagnostic Trouble Codes
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Typical Cat ET screen for logged diagnostic trouble codes
A screen is provided in Cat ET for logged diagnostic trouble codes. The screen will display diagnostic trouble codes that are logged. The Cat ET will log diagnostic trouble codes that are intermittent.