ROD A. 4B3851 - Caterpillar

Indications and System Response
Monitoring System Display
Event codes are activated in one of three warning levels according to the severity of the condition.Level 1 Events are logged only.The Monitoring System Display will alert the operator when a level 2 or a level 3 Event is active.The subsystem warning indicators on the display will illuminate when a EID is activated for some subsystems. When level 1 events are active, the subsystem warning indicator will be the only type of indicator that will illuminate.The action Indicator will flash red when a level 2 warning or level 3 warning is active.The action alarm is driven as an output directly from the Instrument Cluster. If a level 3 warning is active, the action alarm will sound a pulsing tone. The action alarm will sound these tones to alert the machine 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 Monitoring System Display response to these warning levels is shown in the following table.
Table 1
OPERATION    
Warning Level    Warning Indications    Required Operator Action    Possible Result (1)    
Amber Action Indicator Red Action Indicator    Action Alarm Sounds    
1     ON     OFF     OFF     No immediate action required. The system needs attention soon.     No harmful or damaging effects.    
2     OFF     Flash ON and OFF     OFF     Change machine operation or perform maintenance to the system.     Possible damage to system components.    
3     OFF     Flash ON and OFF     Pulse ON and OFF     Follow the displayed Monitoring System Display instructions.     Operator injury or severe damage to components.    
( 1 ) The possible result if action is not taken.Electronic Technician Service Tool
When an abnormal system operating condition occurs, the status screen on Cat ET will indicate that there is an active event.Event codes are displayed on Cat ET in the following format:EXXXX Description of the codeThe "E" indicates that the code is an event code. The "XXXX" is 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
All of the Events that are activated by the Transmission ECM are logged. Level 1 events are logged only. The Monitoring System Display will not give any indication that a level 1 event is active. When level 2 events or Level 3 events are active, the events will be logged and an event active message will be displayed on the Monitoring System Display.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 conditions occur:
The service technician manually clears the code.
The code does not reoccur for 1000 hours.
A new code is logged