TRUNNION 1795757 - Caterpillar

Diagnostic Codes Clear and Reset
Many of the diagnostic codes on the ESS Control System are alarm codes and will be cleared from the diagnostic list when the Display Select Switch is toggled and the conditions for the problem are no longer present. These diagnostic codes will be displayed on the ECM display as a solid message, versus flashing.The diagnostic codes which do cause an engine shutdown require a system reset. The codes are displayed as a flashingmessage on the ECM display and cause a "RST REQD"(reset required) message to be displayed on the ECM. Turn the Mode Control Switch (MCS) to the OFF/RESETposition. Turning the Mode Control Switch to OFF/RESETwill clear ALLthe diagnostic codes from the control system. Acknowledge and clear ALLcodes before removing power from the system.The diagnostic code will be cleared from the code list after being acknowledged and if the problem conditions are no longer present. When the four ECM LED's, on the right side, are not illuminated, no diagnostic codes are present.If the problem conditions are still present when the Display Select Switch is toggled, the display will move to the next diagnostic code and light a solid LED for the code. The ECM will begin flashing the appropriate LED for the previous code to indicate that the diagnostic condition and code is still prevent and has not been acknowledged. Always note and record each diagnostic code before clearing with the Display Select Switch.1. From the "FAULT"or ""screen press the "DIAG"key in order to view the diagnostics. 2. Press the "DIAG"key again in order to see more diagnostics.3. Press the "NEXT"key in order to see more diagnostic messages 4. Press the "ESC"key in order to exit. 5. After all of the diagnostics have been read the user can reset the warnings and faults by first pressing the "ESC"key in order to exit.6. To clear the diagnostic codes from the CIS press the "RESET" key. When the "RESET" key is pressed the following will occur. All Warnings and Faults are cleared from memory. Temporary cylinder timing offsets will be inserted from the EPROM. Failure Mode Identifiers (FMI)
The Failure Mode Identifier (FMI) indicates the nature of the failure that has taken place. The FMI list is adopted from SAE J1587 standard practice diagnostics. The information below shows all the SAE J1587 FMI codes and a general description of the diagnostic modifiers. For a detailed description of the failure mode detected for a particular device, check the diagnostic code Cross Reference chart and the prescribed troubleshooting procedure. ESS Component Identifiers (CID)
A Component Identifier (CID) indicates the control subsystem is experiencing the event. The CID is a three-digit code assigned to each component or system condition. The valid CID for the ESS Control System are in numerical order with a description of the assigned component. The component description includes the physical device, any wiring between the device and the electronic control modules and the inputs or outputs of the control modules associated with the device. Diagnostic Code Cross