320 GX and 323 GX Excavators Monitoring System Warning Operation Caterpillar


Warning Operation
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1.1. Event Icon List

Event Indicator Area toward the top of the Monitoring System Display



Illustration 1g06600041
(1) Pop-up Event Message


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(2) Event Icon List

The Monitor will activate, display, and log events for machine conditions that are not within normal operating parameters. The Monitor will detect some of the events that are not within normal operating parameters. 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 Cat® Data Link. The level of the warning response will be determined depending on the severity of the problem. The event warnings are classified into three warning levels. The warning level determines which 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 required operator actions are given below.

Warning Level 1 - Graphic Display - requires operator awareness.

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

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

When multiple warnings are present in the system, the highest warning level is shown first. Press the arrow keys to view all the logged warnings. If no keys are pressed within 5 seconds, the display will return to the highest level warning.

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

Table 1
Warning Messages 
Security System Active 
Security System Active (HESS) 
Operator Override Hot Shutdown 
Active Regen 
Key Off Regen 
Engine Cooldown Active 
Service Required 
Engine Fault Shutdown Safely 
Inlet Air Temp Power Derate 
Engine Oil Pressure Power Derate 
Fuel Filter Plugged Power Derate 
Coolant Temp High 
Hydraulic Oil Temp High 
DPF Level High Shutdown Safely 
Starter Over Heat 
ECM Error 
Quick Coupler Unlock 
100% Load 
Cancel Auto Stop 
Lift Overload Warning 
Limited Mobility Mode 
Engine Shutdown Pending 
Engine Shutdown Idle Time Exceeded 
Regen Disabled 
Engine Fault Check Engine 
Tool Control Malfunction 
DPF Level High Regen Required 
Engine Oil Pressure Low 
Battery Voltage Irregular 
Coolant Temp Power Derate 
Hydraulic Oil Temp Power Derate 
Hydraulic Return Filter Plugged 
Water Separator Full 
Attachment Filter Plugged 
Hydraulic Oil Temp High (Tool) 
Lever Is Not Neutral 
Cycle the Lock Lever 
90% Load 
Fuel Level Low 
Bucket Cylinder Stroke End 
Engine Over Speed Warning 
Fuel Pressure High 
Fuel Filter Plugged 
Intake Air Filter Plugged 
Coolant Level Low 
Engine Oil Level Low 
Hydraulic Oil Level Low 
Check Filter/Fluid Information 
Fasten Seat Belt 
Regen Condition Not Met 
Regen Condition Engine Temp Low 
Regen System Fault 
Glow Active 
Low Battery Elevated Idle 
Warmup Mode Power Derate 
Intelligent Hammer Active 
Reverse Fan Starting 
Quick Coupler Locking 
Verify Tool Locking 
Bucket In 
Deceleration Area 

Event Icon List



Illustration 3g06223816

The Event Icon List displays all active events. The list orders the higher-level warnings first, with the red furthest left, and gray furthest right. The current selected icon will be highlighted with yellow bow surrounding the icon.

Arrows will appear at either side of the icon list if there are too many icons to display on a single bar. The arrow will navigate to the next set of icons instantly rather than the next icon from the bold one.

Information System:

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