M313C, M315C, M316C, M318C, M318C MH, M322C and M322C MH Excavators Electronic System Caterpillar

The Monitor will activate, display and log events for machine conditions that are not within normal operating parameters. The Monitor will detect some of these events, however, many of these events are detected by the other control modules on the machine. The Monitor receives this event data from the other control modules via the CAN Data Link and will determine what the warning response will be depending on the severity of the problem. The event warnings are classified into three warning levels. The warning level determines what response is required by the operator. Warning level 1 represents the least severe problem and warning level 3 represents the most severe problem. The warning levels, monitor response and the operator action required are given below.

Warning Level 1 - Graphic Display - requires operator awareness

Warning Level 2 - Graphic Display and Action Indicator - requires a change in the operation of the machine or a change in the maintenance of the machine in order to correct the condition

Warning Level 3 - Graphic Display, Action Indicator and Action Alarm - requires immediate shutdown of the machine in order to prevent damage to the machine or personnel

Event codes that are logged by the Monitor will have an event identifier number (EID) that will be displayed in the monitor memory under the menu "Logged Events". Refer to System Operation, "Logged Events Menu" for information on viewing these EID's.

When multiple warnings are present in the system, the highest level warning is shown first. Press the up key or press the down key in order to view all of the warnings that are logged. If no keys are pressed within five seconds, the display will return to the highest level warning. All event code warnings and EID's that can be displayed by the Monitor are listed below according to their warning level. Events with a warning level higher than level 1 will be logged when activated. For a list of event codes that are activated by the machine ECM, refer to System Operation, "Logged Events Menu".

Note: All of the event codes that are listed may not be applicable to all machine models.

Warning Level 1 Event Codes

When a warning level 1 event code is active, the Monitor will show a graphic display.

Low Engine Oil Pressure, EID 100 - The Monitor will display "ENGINE OIL PRESSURE LOW". This warning appears in the display when the engine oil pressure is low. If this warning appears, stop the machine immediately. Stop the engine and investigate the cause of the problem. Do not operate the machine until the cause of the problem has been corrected.

Low Engine Oil Level, EID 171 - The Monitor will display "ENGINE OIL LEVEL LOW". This warning appears in the display when the engine oil level is low. If this warning appears, stop the machine in a safe manner as soon as possible. Stop the engine and check the engine oil level. If needed, add engine oil in order to correct the problem.

Engine Overspeed, EID 190 - When the engine speed is greater than 3300 RPM, the Monitor will display an "ENGINE OVERSPEED" warning.

High Air Filter Restriction, EID 72 - The Monitor will display"AIR FILTER PLUGGED". This warning is displayed when the air filter is restricted. If the air filter is restricted, then engine output will be decreased.

High Transmission Clutch Pressure, EID 113 - When the pressure of the transmission clutch is greater than 3480 kPa (504.7 psi), the Monitor will display a "TRANSM CLUTCH PRES. HIGH" warning.

Low Transmission Clutch Pressure, EID 046 - This event code can be activated as a warning level 1 or 3 depending on the severity of the problem. When the pressure of the transmission clutch is less than 2850 kPa (413.4 psi), the Monitor will display a "TRANSM CLUTCH PRES. LOW" warning.

Low Quick Coupler Pressure, EID 262 - This event can be activated as a level 1, 2 or 3 warning depending on pressure conditions. This event is activated as a level 1 warning when a command is initiated to LOCK the quick coupler. The Monitor will display a "QUICK COUPLER LOCK" warning. This level 1 event will cancel when the quick coupler pressure switch contacts close indicating hydraulic pressure present.

High Quick Coupler Pressure, EID 261 - This event can be activated as a level 1 or 3 warning depending on pressure conditions. This event is activated as a level 1 warning when a command is initiated to UNLOCK the quick coupler. The Monitor will display a "QUICK COUPLER UNLOCK" warning. This level 1 event will cancel when the quick coupler pressure switch contacts open indicating hydraulic pressure is absent.

Low Engine Coolant Level, EID 059 - If the engine coolant level is below the specified level, the Monitor will display a "COOLANT WATER LEVEL LOW" warning.

Low Hydraulic Oil Level, EID 235 - If the hydraulic oil level is below the specified level, the Monitor will display a "HYDRAULIC OIL LEVEL LOW" warning.

Low Fuel Level, EID 119 - If the fuel in the tank is below the specified level, the Monitor will display a "FUEL LEVEL LOW" warning.

Backup System (NO EID) - If the backup control system is activated, the Monitor will display a "BACKUP" symbol. When the backup system is active the following conditions are disabled:the three gauges, throttle position monitor, the alert indicator, the buzzer, the monitor keypad module and. While the backup system is active, the monitoring system is still fully functional, but the other system conditions are not displayed.

Starting Aid (NO EID) - The engine controller is responsible for determining the use of a starting aid. Whenever the starting aid has been activated the Monitor will display a "START AID" symbol. Do not start the engine until the procedure of starting aid has been completed. Once the "START AID" symbol has disappeared from the display monitor, it is safe to start the engine.

High Boom Position, EID 260 - The monitoring system is used to monitor the position of the boom. If the boom angle becomes too high, a "BOOM ANGLE HIGH" warning will be displayed.

Refueling Pump (No EID) - The Monitor will display the "FUEL PUMP ON" symbol while the refueling pump is active.

Monitor Error (No EID) - When the monitoring system detects an error in the prestart monitoring function, the Monitor displays a "MONITOR ERROR" warning.

CAN Data Link (No EID) - When the Monitor is not able to communicate via CAN, the Monitor displays a "MONITOR ERROR" warning along with CAN Data Link error symbol. The Monitor automatically repeats an attempt to make contact with the CAN Data Link system.

Axle Lock On (No EID) - This symbol is shown on the fourth line of the default menu in place of the travel speed status when the axle lock is ON.

Warning Level 2 Event Codes

When a warning level 2 event code is active, the Monitor will show a graphic display and activate the alert indicator.

Auxiliary Valve Pressure, EID 196 - The multifunction auxiliary valve has two pressure switches. These two pressure switches can not be activated simultaneously. When one switch is ON the other switch is OFF. If the ECM for the machine detects both pressure switches are ON, the Monitor will display a "AUX VALVE PRESSURE ERROR".

Travel Pedal Pressure Error, EID 195 - The hydraulic circuit for the travel pedal has two pressure switches. These two pressure switches can not be activated simultaneously. When one switch (forward) is ON the other switch (reverse) is OFF. If the ECM for the machine detects both pressure switches in the same state, the Monitor will display a "TRAVEL PEDAL PRES ERROR" warning.

High Engine Coolant Temperature, EID 017 - This warning indicates excessive coolant temperature. If this warning appears in the display, reduce the operating speed of the machine. Keep the engine at low idle until the engine is cooled down. If the warning stays on after running the engine at low idle, stop the engine. Check the coolant level and check the radiator for debris.

Hydraulic Oil Temperature, EID 600 - This warning indicates excessive hydraulic oil temperature. If this warning appears in the display, reduce the operating speed of the machine. Keep the engine at low idle until the hydraulic oil temperature decreases to the correct level. If the warning stays on during low idle, stop the engine. Check the hydraulic oil level and check the hydraulic oil cooler for debris.

Alternator Not Charging, EID 179 - The "Battery Charge Error" warning appears in the display in order to indicate that the electrical charging system is malfunctioning. This warning is also displayed during the normal starting procedure. The machine can be operated while this warning is displayed. If this warning does not disappear, check the electrical components of the charging circuit immediately. Perform any necessary repairs.

Machine Controller Communication Error (No EID) - In order for the monitoring system to be accurate, the monitoring must keep proper communication with the machine controller. If the Monitor loses communication with the controller, the Monitor will display a "MACHINE CONTROLLER COMMUNICATION ERROR" warning.

Engine Controller Communication Error (No EID) - In order for the monitoring system to be accurate, the monitoring system must keep proper communication with the engine controller. If the Monitor loses communication with the controller, the Monitor will display a "ENGINE CONTROLLER COMMUNICATION ERROR" warning.

Soft Switch Panel Communication Error (No EID) - In order for the monitoring system to be accurate, the monitoring system must keep proper communication with the soft switch panel. If the Monitor loses communication with the controller, the Monitor will display a "SOFT-SWITCH-PANEL COMMUNICATION ERROR" warning.

Power Train (No EID) - The monitoring system is responsible for monitoring the transmission and power train systems. When there is a malfunction in the transmission or the power train systems, the Monitor will display a "POWERTRAIN ERROR" warning. The machine will also display a "POWERTRAIN ERROR" warning when the machine is overspeeding.

Return Hydraulic Filter Plugged, EID 236 - This warning is displayed in the display when the hydraulic return filter (capsule filter) is restricted. A restricted hydraulic return filter will cause hydraulic components to malfunction. Turn the engine start switch to the OFF position and then turn the engine start switch to the ON position. If the warning disappears the filter is good. Operate the machine on flat ground for at least ten minutes. If the warning reappears, replace the return filter cartridge. Refer to Operation and Maintenance Manual, SEBU7945, "Hydraulic System Oil Filter (Return) - Replace".

Note: The warning for the restricted hydraulic return filter will disappear from the display after three minutes.

Low Quick Coupler Pressure, EID 262 - This event can be activated as a level 1, 2 or 3 warning depending on pressure conditions. A warning level 2 warning will be activated when the quick coupler pressure switch contacts do not close within 60 seconds of a LOCK command when no UNLOCK command has been issued. The Monitor will display a "QUICK COUPLER PRESSURE" warning.

Transmission Overspeed, EID 083 - This event is activated when the ground speed is detected to be 7 km/h (4.3 mph) over the defined maximum ground speed. The Monitor will display a "TRANSMISSION OVERSPEED" warning.

Warning Level 3 Event Codes

When a warning level 3 event code is active, the Monitor will show a graphic display, activate the alert indicator and sound the action alarm.

Low Brake Oil Accumulator Pressure, EID 284 - When the pressure for the brake oil accumulator drops below 10000 kPa (1450 psi), and the engine speed is above 0 rpm, the monitor will display a "BRAKE PRESSURE LOW" warning.

Machine Overload, EID 237 - When the system pressure for the machine is too high, the monitor will display a "OVERLOAD HIGH" warning.

Low Quick Coupler Pressure, EID 262 - This event can be activated as a level 1, 2 or 3 warning depending on pressure conditions. This event is activated as a level 3 warning when the quick coupler pressure switch contacts open within 60 seconds of the last contact closing when no UNLOCK command has been given. The monitor will display a "QUICK COUPLER ERROR" warning.

High Quick Coupler Pressure, EID 261 - This event can be activated as a level 1 or 3 warning depending on pressure conditions. This event is activated as a level 3 warning when the quick coupler pressure switch contacts close when no LOCK command has been given The Monitor will display a "QUICK COUPLER ERROR" warning.

Low Transmission Clutch Pressure, EID 046 - This event code can be activated as a warning level 1 or 3 depending on the severity of the problem. When the pressure of the transmission clutch is lower than 2610 kPa (378.5 psi), the monitor will display a "TRANSM CLUTCH PRES. LOW" warning.

Coolant Temperature, EID 015 - This warning indicates excessive coolant temperature. If this warning appears in the display, reduce the operating speed of the machine. Keep the engine at low idle until the engine is cooled down. If the warning stays on after running the engine at low idle, stop the engine. Check the coolant level and check the radiator for debris.

Hydraulic Oil Temperature, EID 023 - This warning indicates excessive hydraulic oil temperature. If this warning appears in the display, reduce the operating speed of the machine. Keep the engine at low idle until the hydraulic oil temperature decreases to the correct level. If the warning stays on during low idle, stop the engine. Check the hydraulic oil level and check the hydraulic oil cooler for debris.

Joystick Steering Active (No EID) - This graphic symbol is displayed with the warning "JOYSTICK STEERING ACTIVE" when the joystick steering function is selected. In addition to the graphic symbol, the action alarm will sound a short beep and the alert indicator will illuminate for 3 seconds. The graphic display will be shown until the joystick steering is switch OFF.

Joystick Steering Inactive (No EID) - This graphic symbol is displayed when the joystick steering function is switched OFF. In addition to the graphic symbol, the action alarm will sound a short beep and the alert indicator will illuminate for 3 seconds. The graphic display will disappear three seconds after the function has been turned OFF.