BEARING-ROLLER 1L7207 - Caterpillar

Using Cat® Electronic Technician (Cat ET) Service Tool to Determine Diagnostic Codes
Perform the following steps to use Cat® Electronic Technician (Cat ET) Service Tool to determine diagnostic codes:
Connect Cat ET to the machine.
Turn the keyswitch on.
Start Cat ET.Cat ET will initiate communication with the electronic control modules (ECMs) on the machine. After communication has been established, Cat ET will list the ECMs.
Select the desired ECM.
After the diagnostic codes have been determined with Cat ET, see the test procedure for the desired diagnostic code.ReferenceTroubleshooting, "Service Tools"Active Diagnostic Codes
Illustration 1 g02355999
Typical Cat® Electronic Technician (Cat ET) Service Tool screen for active diagnostic codes.Cat ET has an "Active Diagnostic Code" screen. The "Active Diagnostic Code" screen shows component identifier (CID), failure mode identifier (FMI), and text description of the problem.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. Perform the desired procedure. Clear any diagnostic codes caused by the procedure.Note: Before performing a procedure, always check all the circuit breakers. Repair the cause of any circuit breaker that is tripped.Logged Diagnostic Codes
Illustration 2 g02356001
Typical Cat ET screen for logged diagnostic codes.Cat ET has a "Logged Diagnostic Code" screen. On the "Logged Diagnostic Code" screen, Cat ET will log diagnostic codes that are intermittent. The logged diagnostic data includes component identifier (CID), failure mode identifier (FMI), and a text description of the problem. Also, the logged diagnostic data includes the number of occurrences of the problem and two time stamps. The time stamps display the first occurrence and 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 1000 hours of machine operation. Using the Monitoring System Display to Determine Diagnostic Codes
Illustration 3 g03869083
Monitoring System Display (1) Directional four-way button (2) OK button (3) Back button (4) Main menu buttonDiagnostic Detail Screen
Illustration 4 g03882633
Active Event Code (5) EID code (6) Warning level (7) Active event indicatorMonitoring System Display
Perform the following steps to determine diagnostic codes:
Press the "Menu" button to view the Main Menu.
Illustration 5 g03882675
Display > Main Menu
At the Main Menu, scroll to the Service menu option and press the "OK" button.
Illustration 6 g03869090
Display > Main Menu > Service
At the Service menu, the first option will be "Diagnostics". Press "OK" to view the list of Active codes and Logged codes.
Illustration 7 g03882678
Display > Main Menu > Service > Diagnostics
The "Service Diagnostics" screen will display the active and logged codes and events. Select the desired code or event and press the "OK" button. The Diagnostic Detail Screen for the selected code or event will appear.Note: If the code is Active, there will be an "X" in the "Act" column.The Diagnostic and Event Details screen will display the following:
A diagnostic code
A description of the failed component
A CID, FMI, or EID (and the Warning Level)
Number of occurrences
Time of the first occurrence
Time of the last occurrence
Active Status