Using the Operator Monitor to Determine Diagnostic Codes
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| Illustration 1 | g03606996 |
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(1) Four-Way Button
(2) "OK" Button (3) Back Button (4) Menu Button (5) Menu Option | |
The monitoring system display can display events and codes in the service mode. The codes and events are reported by an ECM.
The diagnostic codes and events can be viewed in the service mode. Access the service mode by using the following steps.
- Go to the main menu by pressing the menu button (4).
"Main Menu" will appear as the Menu Option (5).
Show/hide table
Illustration 2 g03612618 - Use the Four-Way button (1) to scroll to the "Service" menu.
- Press the "OK" button to view the service menu.
Show/hide table
Illustration 3 g03612638 Show/hide table
Illustration 4 g03612645 - From the service menu, access the diagnostic mode with the "OK" button (2).
The events, active codes, and logged codes will now be displayed.
View the codes and events in more detail by pressing the "OK" button again.
View all codes and events on the list by pressing the Four-Way button (1).
- Press the Menu button (4) or the Back button (3) to exit the service mode.
Note: The codes and the events that are displayed in the Diagnostics option may be viewed at any time. Logged codes cannot be cleared until the technician has successfully entered the Four Digit Machine Password. Refer to 14M Series 3 Motor Graders Information Display, UENR6990 for additional information.
Using Caterpillar Electronic Technician to Determine Diagnostic Codes
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| Illustration 5 | g03845176 |
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Connections for the Communication Adapter III and Cat Electronic Technician (Cat ET) | |
Cat Electronic Technician is software that is used to access, monitor and sometimes change the data that an ECM uses to control a machine system. The service technician can use the Cat ET to perform maintenance on the machine. Some of the options that are available with the Caterpillar Electronic Technician are listed below:
- Viewing the active event codes and logged event codes
- View the status of parameters.
- Clear active diagnostic codes and clear logged diagnostic codes
- Perform calibrations of machine systems.
- Program the ECM (Flash) using the "WINflash" program. See Troubleshooting, "ECM - Software Install".
- Print reports.
The following list contains some of the diagnostic functions and programming functions that are performed by the service tools.
- The failures of the ECM system are displayed.
- The status of most of the inputs and the outputs are displayed.
- The settings for the ECM are displayed.
- Display the status of the input and output parameters in real time.
- Display the clock hour of the internal diagnostic clock.
- The number of occurrences and the clock hour of the first occurrence and the last occurrence is displayed for each logged diagnostic code.
- The definition for each logged diagnostic code and each event is displayed.
- Load new FLASH software.
See Troubleshooting, "Diagnostic Code List" for the list of diagnostic codes for the ECM.
- Active diagnostic codes
- Logged diagnostic codes
Active Diagnostic Codes
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| Illustration 6 | g06061948 |
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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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| Illustration 7 | g06061854 |
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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.