TUBE AS 3250440 - Caterpillar

Cat Electronic Technician (Cat ET) Service Tool
When an abnormal operating condition occurs in the implement system, the status screen on the Cat Electronic Technician (Cat ET) indicates an active event.Event codes are displayed on the Cat ET service tool in the following format:EXXXX Description of the codeThe "E" means 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
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 conditions occur:
The service technician manually clears the code.
The code does not reoccur for 150 hours for each ECM.
A new code is logged and the ECM capacity for diagnostics has been reached. Each ECM has a capacity of 40 diagnostics each. The oldest diagnostic will be cleared.Note: 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 from the operator:
The event and the time of the event.
Determine the engine operating conditions at the time of the event. Conditions such as engine rpm and load may be important.
Determine if there are any systems that were installed by the dealer or by the customer that could cause the event.
Verify that the event is not due to normal machine operation. Verify that the event is not due to error of the operator.
Check all fluid levels and all oil levels.
Troubleshoot and repair any active diagnostic codes.Machine ECM Event Code List
The following table lists the event codes that apply to the Machine ECM. The recommended response is listed. Use Cat ET to determine the event codes that are active or logged.
Table 2
Machine ECM Event Identifier (EID) Codes
EID Description Possible Cause or Recommended Response
E264–3 Emergency Stop Activated Probable Cause - Emergency Stop is Active.
Recommendation - Check the Primary E-Stop, Remote Emergency Stop (Transmission), and Remote Emergency Stop (Steering) Switches. Transmission ECM Event Code List
The following table lists the event codes that apply to the Transmission ECM. The recommended response is listed. Use Cat ET to determine the event codes that are active or logged.
Table 3
Transmission System Event Identifier (EID) Codes
EID Description Possible Cause or Recommended Response
E235-3 Low Hydraulic Oil Level Immediate Safe Shut Down of Machine is Required.
Probable Cause - The switch is open for more than 5 seconds.
Recommendation - Check the following: Oil level, possible oil leaks, or switch circuit open.
E878-1 High Hydraulic Oil Temperature Probable Cause - Oil Temperature is greater than 90° C (194° F) for 60 seconds.
The engine fan will be at maximum speed.
Recommendation - Change the operation of the machine to allow the hydraulic oil to