SHEET AS 9U4117 - Caterpillar

Use the following procedure when a problem is detected:When a diagnostic code is detected, the diagnostic indicator is illuminated. Determine the diagnostic code. Use table 2 in order to find the correct CID and the FMI. The diagnostic code is shown on the control module's diagnostic indicator.Troubleshoot the diagnostic codes with the following procedures:
To enter service mode, disconnect the machine identification plug from the harness code connector. When the control module is in the service mode, the control module's diagnostics are available in order to assist with troubleshooting.
A single code is shown. The diagnostic code is on hold. Information is shown on the diagnostic indicator by flashing the indicator ON and OFF. The flashes represent a two digit number. A series of flashes represent the first digit. A one second pause follows the first digit. Another series of flashes represents the second digit. Count the number of flashes. The number of flashes determine each digit. A three second pause separates each two digit number. Use table 2 in order to find the correct CID and the FMI. The diagnostic code is shown on the control module's diagnostic indicator.
When you scroll through the diagnostic codes, the codes for all of the active diagnostic codes are shown. Ground connector contact 1 in order to scroll through the active diagnostic codes. Remove the ground from connector contact 1 in order to stop scrolling. The diagnostic code that is shown is now on hold. A code of 11 indicates that there are no active diagnostic codes.
When you scroll through the diagnostic codes, the codes for all of the inactive diagnostic codes are shown one at a time. Ground connector contact 5 in order to scroll through the inactive diagnostic codes. Remove the ground from connector contact 5 in order to stop scrolling. The diagnostic code that is shown is now on hold. A code of 12 indicates that there are no inactive diagnostic codes.
Perform the procedure that corresponds to the diagnostic codes (CID and FMI).
Clearing a diagnostic code removes the code from the control module's memory. When a problem is corrected, it is necessary to remove the diagnostic code from the memory of the control module. The inactive diagnostic code must be on hold in order to clear the other codes. The control module does not allow active diagnostic codes to be cleared.
Place the diagnostic code on hold.
The diagnostic code is on hold. Ground connector contact 3 in order to remove the inactive diagnostic code from the control module's memory. The diagnostic indicator is not shown after the inactive diagnostic code has been cleared. The diagnostic indicator is not shown until you scroll through the diagnostic codes. The control module does not allow active diagnostic codes to be cleared.
Repeat the procedure for any remaining diagnostic codes. Return to normal mode when you are finished by replacing the machine identification plug. A code of 12 indicates that there are no inactive diagnostic codes. A code of 11 indicates that there are no active