450E Backhoe Loader Machine Electronic Control System Event Code List Caterpillar

Event Code List

450E Backhoe Loader Machine Electronic Control System [UENR0273]

450E Backhoe Loader Machine Electronic Control System Power Supply Circuit of Electronic Control Module

450E Backhoe Loader Machine Electronic Control System Transmission - Autoshift

ELECTRICAL AND STARTING SYSTEM

450E Backhoe Loader Machine Electronic Control System Event Code List

450E Backhoe Loader Machine Electronic Control System General Information

450E Backhoe Loader Machine Electronic Control System Electrical Input Components

450E Backhoe Loader Machine Electronic Control System Features

450E Backhoe Loader Machine Electronic Control System Diagnostic Capabilities

450E Backhoe Loader Machine Electronic Control System Diagnostic Code List

450E Backhoe Loader Machine Electronic Control System Location of Electrical Components

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Table 1
WARNING OPERATION
Warning Level	Action Alarm	Action Indicator
Level 1	OFF	OFF
Level 2	OFF	Flash ON and OFF
Level 2S	ON	Flash ON and OFF
Level 3	Pulse ON and OFF	Flash ON and OFF

The following is the recommended action for the machine operator in response to the different warning levels:

Level 1 - The alert indicator for the system that is involved will illuminate. A Level 1 warning will indicate that the operator should be aware of a condition of one or more of the machine systems.

Level 2 - The operation of the machine should be changed or maintenance should be performed to the machine. Possible damage to components on the machine may occur.

Level 2S - Utilized in a Transmission overspeed event. In addition to the normal Level 2 Cluster warning, the audible alarm will be in a constant ON state.

Level 3 - The machine needs to have an immediate, safe emergency engine shutdown. Possible injury to the operator or severe damage to components may occur.

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Table 2
Event Codes for the Machine ECM
EID	Warning Level	Description	Activation
50 ⁽¹⁾	1	High Voltage Level 1 Event	1. Start-up delay timer is expired (30 sec) and 2. Engine speed is greater than 800 RPM and 3. System Voltage is greater than 14.8 VDC to activate (less than 14.5 VDC to deactivate) and 4. Debounce status is TRUE.
50 ⁽¹⁾	3	High Voltage Level 3 Event	1. System Voltage is greater than 16 VDC to activate (less than 15.8 VDC to deactivate) and 2. Debounce status is TRUE.
153	3	High speed directional shift	1. Ground speed is greater than 16 km/h (10 mph) and 2. A shift in direction is requested by the operator. A "Shift in Direction" is defined as: 1. Shift from Fwd to Rev 2. Shift from Rev to Fwd 3. Shift out of neutral
172	5 min	Air Inlet Restriction	The air filter is restricted.
232 ⁽¹⁾	2	Water in Fuel Event	1. Powerup delay timer (5 sec) expires and 2. The switch for the water level is ON.
282 ⁽¹⁾	2	Hydraulic Oil Filter Bypass Event	1. Hydraulic oil temperature is greater than (42 °C)(108 °F) (Temp Limit) or Hydraulic Oil Temp is unknown or Event is previously active and still in hysteresis( 39 °C (102.2 °F)) and 2. The switch for the hydraulic filter is ACTIVE.
360		Low Engine Oil Pressure	The engine oil pressure is low enough to activate the engine oil pressure switch for 3 seconds and the engine is not running.
361		High Engine Coolant Temperature	The engine coolant temperature is greater than (113 °C)(235 °F) for 3 seconds.
627 ⁽¹⁾	2	Machine Driven with Parking Brake ON	1. The ground speed is greater than 1 km/h (0.6 mph) in forward or reverse and 2. The Parking Brake switch is closed for 1 second.
861 ⁽¹⁾	1	Machine Synchronize clock Manual Alignment	The SYNC Clock requires Manual Adjustment.
875 ⁽¹⁾	1	Low Voltage Level 1 Event	1. Start-up delay timer is expired (30 sec) and 2. Engine speed less than 400 RPM and 3. System Voltage is 12.3 - 12.5 VDC and 4. Debounce status is TRUE (8 minute debounce on bench test). OR 1. Start-up delay timer is expired (30 sec) and 2. Engine speed greater than 1300 RPM and 3. System voltage is 12.4 - 13 VDC and 4. Debounce status is TRUE.
875 ⁽¹⁾	2	Low Voltage Level 2 Event	1. Start-up delay timer is expired (30 sec) and 2. Engine is running and 3. Engine speed less than 1300 RPM and 4. System Voltage is 12.4 - 13 VDC and 5. Debounce status is TRUE. OR 1. Start-up delay timer is expired (30 sec) and 2. Engine is running and 3. System voltage is 12 - 12.3 VDC and 4. Debounce status is TRUE.
875 ⁽¹⁾	3	Low Voltage Level 3 Event	1. Start-up delay timer is expired (30 sec) and 2. Engine speed is greater than 800 RPM and 3. System Voltage is 11.5 VDC or 11.8 VDC and 4. Debounce status is TRUE.
878 ⁽¹⁾	2	High Hydraulic Oil Temperature Event	1. Hydraulic oil temperature is greater than 110 °C (230. °F) and 2. ON delay timer (3 min) is expired.