C27 and C32 Tier 4 Engines Caterpillar


Engine Monitoring Parameters

Usage:

C27 AT4
The Electronic Control Module (ECM) provides a comprehensive, programmable engine monitoring system. The ECM monitors specific engine operating parameters in order to detect abnormal conditions that may develop. The ECM will generate an event code if a specific engine parameter exceeds an acceptable range that is defined by the engine monitoring system. If a parameter is exceded, the ECM will react with an action that is dependent on the severity of the condition. Refer to Troubleshooting, "Diagnostic Trouble Codes" for a cross-reference to the applicable troubleshooting procedures for this application.

The following actions may be initiated by the ECM. These actions are dependent on the severity of the condition.

  • Illumination of a warning lamp or warning alarm

  • Engine derate

  • Engine shutdown

Three possible responses may be available for each parameter. Some of the responses are not available for some of the parameters. Refer to Table 1.

Table 1
Warning Category Indicator (WCI) (1), (2), and (3) 
WCI  Severity 
(1)  Least Severe 
(2)  Moderate Severity 
(3)  Most Severe 

Use Caterpillar Electronic Technician (ET) to perform the following activities for the monitoring system:

  • Viewing parameters

  • Parameter programming

  • Set delay times

The default settings for the parameters are programmed at the factory. To accommodate unique applications and sites, some of the parameters may be reprogrammed with Cat ET. Use Cat ET to modify the monitoring system parameters.

Note: Some parameters do not require a password in order to be changed. Other parameters can be changed with customer passwords. Some of the parameters are protected by factory passwords. Some parameters cannot be changed. Some applications do not allow any changes to the programmable monitoring system. Parameters that are protected by factory passwords can only be changed by dealer personnel.

Viewing or Changing the Settings of the Monitoring System

Print a "Product Status Report" for your engine prior to continuing. The report will provide a reference to the current state of the engine.

Use the following procedure in order to view the parameter settings and/or change the parameter settings:

  1. Select the "Service/Monitoring System" screen on Cat ET.

    Note: Ensure that you select the correct ECM for the parameters that are being changed before continuing.

  2. Highlight the desired parameter. Select the "Change" button in the lower left corner of the screen.

    The "Change Monitor System" screen will appear.

  3. Change the "State" of the parameter.

  4. Set the "Trip Point" and the "Delay Time" according to the "Allowed Values" that are displayed in the lower half of the screen.

  5. Click the "OK" button.

    If a password is required, the "Enter Passwords" screen will appear. Enter the correct passwords and then click the "OK" button. The new settings will be effective immediately.

    Note: If a factory password is required, the "Enter Factory Passwords" screen will appear. Refer to Troubleshooting, "Factory Passwords".

Note: Factory passwords are only available to service technicians from an authorized Caterpillar Dealership. Customers of Caterpillar do not have access to the Caterpillar Feature Protection System (FPS).

Trip Points for the "Engine Monitoring System"

The ECM monitors the operating parameters of the engine. The ECM can generate a code for specific parameters that exceed an acceptable range. The acceptable range for each parameter is defined by the setpoints that are programmed into the ECM. Some of the setpoints for the parameters may be programmable by the technician. Access the engine monitoring system on Cat ET in order to view the current parameter settings.

Table 5 contains the codes that can be generated by the ECM. Most of the codes will coincide with a parameter that is monitored by the engine monitoring system. Some of the codes may be generated from a switched input or generated from calculated values that are based on multiple sensor inputs. These types of codes would not coincide with a parameter that is monitored by the engine monitoring system. Table 5 also contains the minimum and maximum ranges for the parameters and the default settings for each parameter.

Table 2
Trip Points for the Monitoring System 
J1939 Code and Description  WCI  Trip Point and Enabling Conditions  Default Delay Time in Seconds  Derate
(%) 
100-1 Engine Oil Pressure : Low - most severe   (3)  Refer to Table 4 for details.   
100-17 Engine Oil Pressure : Low - least severe   (1)  Refer to Table 3 for details.   
100-18 Engine Oil Pressure : Low - moderate severity   (2)  Not Available   
105-0 Engine Intake Manifold #1 Temperature : High - most severe   (3)  Not Available   
105-15 Engine Intake Manifold #1 Temperature : High - least severe   (1)  Not Available   
105-16 Engine Intake Manifold #1 Temperature : High - moderate severity   (2)  Not Available   
107-15 Engine Air Filter 1 Differential Pressure : High - least severe   (1)  1.0 kPa (0.15 psi)   
107-16 Engine Air Filter 1 Differential Pressure : High - moderate severity   (2)  1.0 kPa (0.15 psi)  60   
110-0 Engine Coolant Temperature : High - most severe   (3)  111° C (228° F)  10   
110-15 Engine Coolant Temperature : High - least severe   (1)  110° C (230° F)  10   
110-16 Engine Coolant Temperature : High - moderate severity   (2)  111° C (228° F)  20   
111-1 Engine Coolant Level : Low - most severe   (3)  None  10   
111-17 Engine Coolant Level : Low - least severe   (1)  None  10   
111-18 Engine Coolant Level : Low - moderate severity   (2)  None  10   
174-0 Engine Fuel Temperature 1 : High - most severe   (3)  85° C (185° F)  30   
174-15 Engine Fuel Temperature 1 : High - least severe   (1)  83° C (181° F)  30   
174-16 Engine Fuel Temperature 1 : High - moderate severity   (2)  79° C (174° F)  10   
190-0 Engine Speed : High - most severe   (3)  2800  0.6   
190-15 Engine Speed : High - least severe   (1)  2600  0.6   
593-1 Engine Idle Shutdown has Shutdown Engine : Low - most severe   (3)  Not Available  Not Available   
593-18 Engine Idle Shutdown has Shutdown Engine : Low - moderate severity   (2)  Not Available  Not Available   
1131-15 Engine Intake Manifold #2 Temperature : High - least severe   (1)  Not Available  Not Available   
1131-16 Engine Intake Manifold #2 Temperature : High - moderate severity   (2)  Not Available  Not Available   
1385-1 Auxiliary Temperature 1 : Low - most severe   (3)  107° C (225° F)  N/A 
1385-15 Auxiliary Temperature 1 : High - least severe   (1)  105° C (221° F)  N/A 
1385-16 Auxiliary Temperature 1 : High - moderate severity   (2)  106° C (223° F)  N/A 
1387-0 Auxiliary Pressure #1 : High - most severe   (3)  1500 kPa (218 psi)  N/A 
1387-15 Auxiliary Pressure #1 : High - least severe   (1)  1500 kPa (218 psi)  N/A 
1387-16 Auxiliary Pressure #1 : High - moderate severity   (2)  1500 kPa (218 psi)  N/A 

Table 3
Trip Points for Low Oil Pressure Warning (Gauge Pressures) 
0 rpm  0 kPa (0 psi) 
500 rpm  0 kPa (0 psi) 
1600 rpm  154 kPa (22 psi) 
2400 rpm  154 kPa (22 psi) 

Table 4
Trip Points for Low Oil Pressure Shutdown (Gauge Pressures) 
0 rpm  0 kPa (0 psi) 
500 rpm  0 kPa (0 psi) 
1600 rpm  104 kPa (15 psi) 
2400 rpm  104 kPa (15 psi) 

Monitoring System Parameters that are Not Programmable

Table 5
Trip Points for the Monitoring System 
J1939 Code and Description  WCI  Trip Point and Enabling Conditions  Default Delay Time in Seconds  Derate
(%) 
101-15 Engine Crankcase Pressure : High - least severe   (1)  7 kPa (1 psi)  30  N/A 
101-16 Engine Crankcase Pressure : High - moderate severity   (2)  10 kPa (1.5 psi)  N/A
102-18 Engine Intake Manifold #1 Pressure : Low - moderate severity   (2)  These trip points are dependent on a complex set of maps relating to fuel volume and engine speed.  N/A 
411-15 Engine Exhaust Gas Recirculation Differential Pressure : High - least severe   (1)  These trip points are dependent on a complex set of maps relating to fuel volume and engine speed.  N/A 
411-17 Engine Exhaust Gas Recirculation Differential Pressure : Low - least severe   (1)  These trip points are dependent on a complex set of maps relating to fuel volume and engine speed.  N/A 
412-15 Engine Exhaust Gas Recirculation Temperature : High - least severe   (1)  These trip points are dependent on a complex set of maps relating to fuel volume and engine speed.  N/A 
412-16 Engine Exhaust Gas Recirculation Temperature : High - moderate severity   (2)  These trip points are dependent on a complex set of maps relating to fuel volume and engine speed.  N/A 
2659-15 Engine Exhaust Gas Recirculation (EGR) Mass Flow Rate : High - least severe   (1)  These trip points are dependent on a complex set of maps relating to fuel volume and engine speed.  N/A 
2659-16 Engine Exhaust Gas Recirculation (EGR) Mass Flow Rate : High - moderate severity   (2)  These trip points are dependent on a complex set of maps relating to fuel volume and engine speed.  N/A 
2659-17 Engine Exhaust Gas Recirculation (EGR) Mass Flow Rate : Low - least severe   (1)  These trip points are dependent on a complex set of maps relating to fuel volume and engine speed.  N/A 
3358-16 Engine Exhaust Gas Recirculation Inlet Pressure : High - moderate severity   (2)  These trip points are dependent on a complex set of maps relating to fuel volume and engine speed.  N/A 
5580-18 Fuel Pressure Sensor - After Fuel Filter : Low - moderate severity  (2)  Refer to Illustration 1 for details.  (1)  N/A 
5584-15 Fuel Filter Restriction : High - least severe   (1)  103.4 ± 20.7 kPa (15.0 ± 3.0 psi)  (1)  N/A 
5584-16 Fuel Filter Restriction : High - moderate severity   (2)  After severity level (1) is continuously active for two hours, severity level (2) will be activated.  N/A 
(1) The delay time for this event is dependent on the severity of the condition.


Illustration 1g02322215
Control map for low fuel pressure

Separate timers are used in the ECM for each response that is associated with a parameter. If a trip point is reached, the timer for that event is started.

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