RING 0966219 - Caterpillar

Alert indicators (2) alert the operator when an event code is active. Event codes are activated in one of three warning levels according to the condition severity. The subsystem warning indicators on the indication display illuminate when a warning is activated for a particular subsystem. When level 1 events are active, the subsystem warning indicator will be the only indicator that will illuminate.The action lamp (1) will flash red when a level 2, level 2S, or level 3 warning is active. If communication between display indicators (2) and the indication display fails, the action lamp will flash yellow.The action alarm is driven as an output directly from the indication display. If a level 2S, or level 3 warning is active, the action alarm will sound a tone that is pulsing. The action alarm will sound these tones to alert the operator that immediate action is required.If two warnings of a different level are active at the same time, the highest level warning will be displayed.The response of indication display to these warning levels is shown in Table 1.
Table 1
OPERATION
Warning Level Alert Indications Action That Is Required By The Operator Possible Result (1)
Warning Indicators Action Indicator Sounds Of The Action Alarm
1 ON OFF OFF No immediate action is required. The system needs attention soon. No harmful effects or damaging effects
2 ON Flash ON and OFF. OFF Change machine operation or perform maintenance to the system. Damage to system components
2S ON ON ON continuously Immediately change the machine operation. Severe damage to system components
3 ON Flash ON and OFF Pulse ON and OFF Immediately perform a safe engine shutdown. Injury to the operator or severe damage to the components
(1) (The possible result if no action is taken by the operator.)Caterpillar® Electronic Technician (Cat® ET) Service Tool
When an abnormal operating condition occurs, information about the condition can be accessed with the Cat ET service tool. The Cat ET status screen will indicate an active event.Event codes are displayed on Cat ET in the following format:EXXXX Description of the codeThe "E" means that the code is an event code. "XXXX" indicates a numeric identifier. The numeric identifier is followed by a description of the code. Active event codes are listed in ascending numerical order. The code with the lowest number is listed first. The active event code is removed from the list when the condition is no longer present.Logged Event Codes
Some event codes are logged in the ECM memory. Some event codes are active only. The logged event codes are listed in chronological order. The most recent code is listed first.A logged code is cleared from memory when one of the following occurs:
The service technician manually clears the code
The code does not reoccur for 1000 hours
A new code is logged and there are already ten logged codes in memory. In this case, the oldest logged code is clearedNote: Always clear logged event codes after investigating and correcting the problem which generated the code.Troubleshooting
Perform the following steps to troubleshoot an event:
Obtain the following information