RADIATOR GP 7W2793 - Caterpillar

Table 3
LED Display On The Engine Control Module
LED Color Indication
"STATUS" Green Status information is displayed.
"COMMUNICATION LINK 1 ACTIVE" Green The engine control module is communicating properly with the Timing Control Module.
"COMMUNICATION LINK 2 ACTIVE" Yellow The engine control module is communicating properly with the gauges of the monitoring system, the ports for the digital diagnostic tool, the customer communication module, and the detonation mixing control.
"CAUTION MODE" Red One or more problems exist. The code that indicates the exact nature of the condition will be displayed.
"SENSOR FAULT" Red A problem with one of the sensors has been detected. One or more problems exist. The code that indicates the exact nature of the condition will be displayed.
"ACTUATOR FAULT" Red A problem with one of the actuators has been detected. The code that indicates the exact nature of the problem will be displayed.
"SYSTEM FAULT" Red A problem with one of the control systems has been detected. The code that indicates the exact nature of the problem will be displayed.
"CONTROL MODULE FAULT" Red A problem with one of the control modules has been detected. The code that indicates the exact nature of the problem will be displayed. The display will normally indicate either the desired engine rpm or the fuel energy content for the engine operation. If diagnostic codes are present, the appropriate engine control module indicator and the corresponding Caterpillar monitoring system fault indicator ("F1" through "F12") are illuminated. See Illustrations 7 and 4.Using the "DISPLAY SELECT" will reveal the diagnostic code. Toggling the "DISPLAY SELECT" switch will cause the display to indicate any other diagnostic codes in the order of occurrence.If the engine control module shuts down the engine because of a fault, the condition which caused the shutdown will be indicated by a FLASHING diagnostic code. Diagnostic codes which do not cause an engine shutdown are warning codes. A display of a warning code does not flash. Correct the cause of the warning code in order to avoid problems with operation.If the engine control module initiates an engine shutdown, a "RST REQD" message will also be present on the engine control module. To view the message, toggle the "DISPLAY SELECT" switch. This message indicates that the system must be reset before the engine can be started. To reset the system, turn the mode control switch to the "OFF/RESET" position. This will also clear the message.Use of the mode control switch or the remote start/stop initiate contact causes the status control module to shut down the engine. The status control module sends a signal to the engine control module. The engine control module will display "SHUT DN" when the signal from the status control module is received.A "SHUT DN" display indicates one of the following occurrences:
The engine has completed a normal shutdown that was initiated by an external signal.
The mode control switch is in the "STOP" position.This code will be cleared when the engine is started. Resetting the engine control module is not required.If a diagnostic code has been acknowledged