KIT-SEAL 1G2788 - Caterpillar

Electronic Control Circuit Diagram
Illustration 1 g02228013
Electronic control circuit diagram for a typical C7.1 engine
Table 1
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 Typical C7.1 Engine
Illustration 2 g06123715
Sensor locations on the left side of a typical C7.1 engine
(1) Coolant temperature sensor
(2) Fuel temperature sensor
(3) Solenoid for the high-pressure fuel pump
(4) Intake manifold air temperature sensor
(5) Intake manifold pressure sensor
(6) Fuel rail pressure sensor
(7) 31-pin connector for the CEM
(8) Electronic Control Module (ECM)
(9) Barometric pressure sensor
(10) Primary speed/timing sensor
(11) Oil pressure sensor
Illustration 3 g06123741
Sensor locations on the left side of a typical C7.1 engine
(1) Coolant temperature sensor
(2) Fuel temperature sensor
(3) Solenoid for the high-pressure fuel pump
(4) Intake manifold air temperature sensor
(5) Intake manifold pressure sensor
(6) Fuel rail pressure sensor
(7) 31-pin connector for the CEM
(8) Electronic Control Module (ECM)
(9) Barometric pressure sensor
(10) Primary speed/timing sensor
(11) Oil pressure sensor
Illustration 4 g06123775
Sensor locations on the right side and top of a typical C7.1 engine
(12) NOx Reduction System (NRS) differential pressure sensor
(13) NRS inlet pressure sensor
(14) NRS inlet temperature sensor
(15) NRS valve including a position sensor
(16) Engine intake throttle valve including a position sensor
(17) Wastegate regulator
(18) Secondary speed/timing sensor
Illustration 5 g06123782
Sensor locations on the right side and top of a typical C7.1 engine
(12) NOx Reduction System (NRS) differential pressure sensor
(13) NRS inlet pressure sensor
(14) NRS inlet temperature sensor
(15) NRS valve including a position sensor
(16) Engine intake throttle valve including a position sensor
(17) Wastegate regulatorTypical Clean Emissions Module (CEM)
Illustration 6 g06123996
Sensors and components on a typical Clean Emissions Module (CEM)
(19) Probe for the DOC inlet temperature sensor
(20) DPF inlet pressure sensor
(21) DPF outlet pressure sensor
(22) Aftertreatment ID module
(23) ARD combustion air valve including a position sensor
(24) Aftertreatment Regeneration Device (ARD) ignition coil
(25) ARD
(26) Soot antennas
(27) ARD pilot fuel pressure sensor
(28) ARD pilot fuel control valve
(29) 40-pin harness connector
(30) Heater relay for the ARD nozzle