Event codes alert the operator that an abnormal Machine ECM condition has occurred.
When the ECM activates an event code, the operator will be alerted by the Caterpillar Monitoring System. The active event will be logged by the ECM and can be viewed with the Caterpillar Monitoring System or the Caterpillar Electronic Technician (ET) service tool.
Warning Levels
The ECM will assign one of three warnings levels to an active event code according to the severity of the abnormal system condition. Each warning level requires a specific response from the operator. The warning levels and required operator response are listed below.
Warning Level 1
Warning level 1 alerts the operator that a machine system requires attention. The operator should check the involved system condition or the operator should perform maintenance on the involved system at the earliest possible time.
Warning Level 2
Warning level 2 requires a change in the operation of the machine or the performance of a maintenance procedure. Failure to correct the problem that caused this warning may result in damage to the machine components.
Warning Level 3
Warning level 3 requires an immediate safe shutdown of the machine in order to avoid damage to the machine or injury to personnel around the machine. The problem that caused the event must be corrected before machine operation can resume.
Indications and System Response
Caterpillar Monitoring System
The monitoring system will alert the operator when an event code is active. Event codes are activated in one of three warning levels according to the severity of the condition. The response of the monitoring system to these warning levels is shown in the following table.
| WARNING OPERATION | |||||
|---|---|---|---|---|---|
| Warning Category | Warning Indications (1) | Required Operator Action | Possible Result (4) | ||
| Alert Indicator Flashes (2) | Action Lamp Flashes | Action Alarm Sounds | |||
| 1 | X | No immediate action required. The system needs attention soon. | No harmful or damaging effects. | ||
| 2 | X | X | Change machine operation or perform maintenance to the system. | Damage to system components. | |
| 3 | X | X | X (3) | Immediately perform a safe engine shutdown. | Operator injury or severe damage to components. |
| ( 1 ) | The active warning indications are marked with an "X". |
| ( 4 ) | This is the possible result if the operator does not take action. |
| ( 2 ) | At a 1/2 Hz rate. |
| ( 3 ) | Pulsating alarm. |
Electronic Technician Service Tool
When an abnormal power train operating condition occurs, the status screen on the Caterpillar Electronic Technician (ET) indicates that there is an active event.
Event codes are displayed on Cat ET in the following format:
EXXXX Description of the code
The "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
Every event code is logged in the ECM memory. 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.
- A new code is logged and there are already twenty logged codes in memory. In this case, the oldest logged code is cleared.
Note: Always clear logged event codes after investigating and correcting the problem which generated the code.
Troubleshooting
Perform the following steps in order to troubleshoot an event:
- Obtain the following information from the operator:
- The event and the time of the event
- Determine the engine's 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.
- The event and the time of 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.
Event Code List
The following table lists the event codes that apply to the Machine ECM. The recommended operator response is listed. Use the Cat ET service tool in order to determine the event codes that are active or logged.
| Event Identifier (EID) Codes | |||
|---|---|---|---|
| EID | Level | Description | Operator Response |
| 0179 | 1 | Alternator Not Charging | |
| 0272 | 1 | Air Inlet Restriction Warning | |
| 0360 | 2 | Low Engine Oil Pressure | |
| 0360 | 3 | Low Engine Oil Pressure | |
| 0361 | 2 | High Engine Coolant Temperature | |
| 0391 | 1 | Inlet Air Restriction | |
| 0568 | 2 | Unexpected Left Motor Forward Speed Detected | Unexpected Motor Speed in the indicated direction has been detected. Refer to Troubleshooting, "Motor Speed is Unexpected". |
| 0569 | 2 | Unexpected Left Motor Reverse Speed Detected | Unexpected Motor Speed in the indicated direction has been detected. Refer to Troubleshooting, "Motor Speed is Unexpected". |
| 0570 | 2 | Unexpected Right Motor Forward Speed Detected | Unexpected Motor Speed in the indicated direction has been detected. Refer to Troubleshooting, "Motor Speed is Unexpected". |
| 0571 | 2 | Unexpected Right Motor Reverse Speed Detected | Unexpected Motor Speed in the indicated direction has been detected. Refer to Troubleshooting, "Motor Speed is Unexpected". |
| 0695 | 3 | Unexpected Motor Speed Detection Disabled | This event is an active only event (will not be logged). The event designates the unexpected motor speed detection control has been disabled due to a motor speed sensor circuit fault. A motor speed sensor circuit fault includes the motor speed signals and power supply (8V Power Supply). The event will only be active when the hystat transmission lever is in forward or reverse. Reference the troubleshooting procedure for motor speed diagnostics or 8V Power Supply diagnostics, accordingly. Once the diagnostics are cleared, return the hystat transmission lever to neutral and the event will be cleared. |
| 0696 | 3 | Opposite Machine Movement Commands Disabled | This is an active only event. The event will not be logged. The event designates the machine will be unable to move in the opposite direction of travel. For example, if the machine is moving in the forward direction and a reverse pump solenoid has an open circuit diagnostic code, the machine will be unable to move in the opposite direction and the event will be active. This event will be active for FMI 05 and FMI 06 pump solenoids codes. Reference the troubleshooting procedures for the appropriate diagnostic. This event will remain active until the diagnostic has been cleared and the hystat transmission lever has been brought to the neutral position. |
| 0875 | 1 | Low System Voltage | |
| 0875 | 2 | Low System Voltage | |
| 0875 | 3 | Low System Voltage | |
| 0876 | 1 | High System Voltage | |
| 0876 | 2 | High System Voltage | |
| 0876 | 3 | High System Voltage | |
| 0878 | 2 | High Hydraulic Oil Temperature | Activates at 93 °C (199 °F) - Resets at 90 °C (194 °F.) Modify machine operation to reduce system load. Check oil level. |
| 0878 | 3 | High Hydraulic Oil Temperature | Activates at 99 °C (237 °F) - Resets at 97 °C (233 °F.) Immediate safe shutdown - Modify machine operation to reduce system load - Check oil level. |
| 0879 | 1 | Hydraulic Tank Oil Filter Plugged | |
