Component Location
Electronic Control Circuit Diagram
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| Illustration 1 | g02476570 |
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Electronic control circuit diagram for a typical C4.4 engine | |
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| Illustration 2 | g02476572 |
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Electronic control circuit diagram for a typical C6.6 engine | |
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| Components That May Be Only Applicable For Certain Applications | |
| Speed Control Input | Cooling Fan Solenoid |
| Ambient Air Temperature Sensor | Engine Fan Reversing Solenoid |
| Coolant Level Sensor | Air Filter Restriction Pressure Sensor |
| Ether Solenoid | |
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| Illustration 3 | g06098746 |
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Sensor locations on the left side of a typical C4.4 engine (1) Intake manifold air temperature sensor (2) Intake manifold pressure sensor (3) Water-in-fuel switch (4) Electronic Control Module (ECM) (5) Barometric pressure sensor (6) Primary speed/timing sensor (7) Oil pressure sensor (8) Fuel temperature sensor (9) Solenoid for the high-pressure fuel pump (10) Coolant temperature sensor (11) Fuel rail pressure sensor | |
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| Illustration 4 | g06098840 |
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Close up views of sensor locations on the left side of a typical C4.4 engine (1) Intake manifold air temperature sensor (2) Intake manifold pressure sensor (3) Water-in-fuel switch (4) Electronic Control Module (ECM) (5) Barometric pressure sensor (6) Primary speed/timing sensor (7) Oil pressure sensor (8) Fuel temperature sensor (9) Solenoid for the high-pressure fuel pump (10) Coolant temperature sensor (11) Fuel rail pressure sensor | |
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| Illustration 5 | g06099155 |
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Sensor locations on the right side and top of a typical C4.4 engine (12) NOx Reduction System (NRS) temperature sensor (13) NRS valve including a position sensor (14) NRS outlet pressure sensor (15) NRS inlet pressure sensor (16) Wastegate regulator (17) Secondary speed/timing sensor (not shown) (18) Exhaust Back Pressure Regulator (EBPR) | |
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| Illustration 6 | g06099179 |
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Sensor locations on the right side and top of a typical C4.4 engine (12) NOx Reduction System (NRS) temperature sensor (not shown) (13) NRS valve including a position sensor (14) NRS outlet pressure sensor (15) NRS inlet pressure sensor (16) Wastegate regulator (17) Secondary speed/timing sensor (not shown) (18) Exhaust Back Pressure Regulator (EBPR) | |
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| Illustration 7 | g06099223 |
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Sensor locations on the left side of a typical C6.6 engine (1) Fuel rail pressure sensor (not shown) (2) Intake manifold pressure sensor (3) Intake manifold air temperature sensor (4) Electronic Control Module (ECM) (5) Barometric pressure sensor (not shown) (6) Primary speed/timing sensor (7) Oil pressure sensor (8) Water-in-fuel switch (9) Fuel temperature sensor (10) Solenoid for the high-pressure fuel pump (11) Coolant temperature sensor | |
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| Illustration 8 | g06099261 |
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Close up views of sensor locations on the left side of a typical C6.6 engine (1) Fuel rail pressure sensor (2) Intake manifold pressure sensor (3) Intake manifold air temperature sensor (4) Electronic Control Module (ECM) (5) Barometric pressure sensor (6) Primary speed/timing sensor (7) Oil pressure sensor (8) Water-in-fuel switch (9) Fuel temperature sensor (10) Solenoid for the high-pressure fuel pump (11) Coolant temperature sensor | |
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| Illustration 9 | g06099277 |
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Sensor locations on the right side and top of a typical C6.6 engine (12) NOx Reduction System (NRS) outlet pressure sensor (13) NRS inlet pressure sensor (14) NRS temperature sensor (15) NRS valve including a position sensor (16) Wastegate regulator (17) Exhaust Back Pressure Regulator (EBPR) (18) Secondary speed/timing sensor | |
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| Illustration 10 | g06099297 |
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Sensor locations on the right side and top of a typical C6.6 engine (12) NOx Reduction System (NRS) outlet pressure sensor (13) NRS inlet pressure sensor (14) NRS temperature sensor (15) NRS valve including a position sensor (16) Wastegate regulator (17) Exhaust Back Pressure Regulator (EBPR) (18) Secondary speed/timing sensor (not shown) | |
Typical Clean Emissions Module (CEM)
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| Illustration 11 | g06099332 |
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Sensors and components on a typical Clean Emissions Module (CEM) (1) Probe for the DOC inlet temperature sensor (2) DOC inlet temperature sensor (3) Aftertreatment ID module (4) Soot antennas | |
Caterpillar Information System:
C4.4 and C6.6 Engines Welding Precaution
C4.4 and C6.6 Engines General Information
Failure Analysis Report - AFA Good Report {0374, 1000} Failure Analysis Report - AFA Good Report {0374, 1000}
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HPU300 Hydraulic Power Pack Hydraulic Oil Filter - Replace
C4.4 and C6.6 Engines Diagnostic Trouble Codes
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C175-16 and C175-20 Locomotive Engines Fuel Pump (High Pressure) - Remove and Install
C175-16 and C175-20 Locomotive Engines Air Inlet Manifold - Remove and Install
Front Suspension Failures May Occur on Certain 777D/777F/777G Off-Highway Trucks {7200, 7201, 7551} Front Suspension Failures May Occur on Certain 777D/777F/777G Off-Highway Trucks {7200, 7201, 7551}
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G3512 Generator Set Engines Manifold Air Pressure Sensor
G3512 Generator Set Engines Measuring Inlet Manifold Temperature
G3512 Generator Set Engines Restriction of Air Inlet and Exhaust
HPU300 Hydraulic Power Pack Before Starting Motor
G3612 and G3616 Engines Maintenance Interval Schedule - Engines With 10.5 or 11.1 Compression Ratio and Use Natural Gas
G3612 and G3616 Engines Maintenance Interval Schedule - Bio-Gas Engines
G3612 and G3616 Engines Maintenance Interval Schedule - Engines with a 9.2:1 Compression Ratio and Use Wellhead or Natural Gas
® Marine Display Connections
Securing the C4.4 Generator Set for Transportation {7274} Securing the C4.4 Generator Set for Transportation {7274}
New Engine Software Is Now Used For Certain G3512 Engines {7610, 7620} New Engine Software Is Now Used For Certain G3512 Engines {7610, 7620}
Reference Guide for a Proper Failure Analysis by CAT Dealer {0374, 1000} Reference Guide for a Proper Failure Analysis by CAT Dealer {0374, 1000}