TUBE AS 1267149 - Caterpillar

Using Cat© Electronic Technician
Connect the Cat® Electronic Technician 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 codes have been determined with the Cat® ET, see the test procedure for the corresponding diagnostic code.Reference: Troubleshooting, "Service Tools"Active Diagnostic Codes
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Typical Cat® ET screen for Active Diagnostic codes
The following procedures may cause new diagnostic codes to be logged. Therefore, before any procedures are performed, make a list of all the active diagnostic codes to determine the system problems. Clear the diagnostic 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 codes. The screen will display the diagnostic 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 Codes
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Typical Cat® ET screen for Logged Diagnostic codes
A screen is provided in Cat® ET for logged diagnostic codes. The screen will display diagnostic codes that are logged. The Cat® ET will log diagnostic codes that are intermittent. The logged diagnostic data shall include a component identifier (CID), a failure mode identifier (FMI), and a text description of the problem. Also, the logged diagnostic data shall include the number of occurrences of the problem and two time stamps. The time stamp displays the first occurrence of the problem and the time stamp displays the most recent occurrence of the problem.Diagnostics are logged in non-volatile memory. On powerup, the ECM will clear any diagnostic codes that have not been detected or active within the last 150 hours of machine operation.Using the Operator Monitor
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Typical Advisor screen for accessing "Diagnostics"
Perform the following to access the "Diagnostics" screen from the "Service Menu":
Use the appropriate "Arrow" button to highlight the "Diagnostics" option.
Press the "OK" button to access the "Diagnostics" screen.
Select “Active Events” to show a list of Active Diagnostics. Select "Logged Events"to show a list of Logged Diagnostic Codes.Each line in each list shows the following:
Component Description
Warning LevelThe display also shows the following:Perform the following to access the codes and events from the "Diagnostics" screen:
Use the appropriate "Arrow" button to highlight a specific code (line on the list).
Press the "OK" button to display the detailed view of that line.The detailed view will display a text message. The text message will include the following:
The reporting ECM (MID)
Identity of the component that has failed (CID)
An explanation of the failure
Number of occurrences
The time (service hour) of the first occurrence
The time of the last occurrence of the code or event
The fact that the code is activeNote: The codes and the events that are displayed in the "Diagnostics" option