HEAD GP- 10R7688 - Caterpillar

Electronic Control Circuit Diagram
Engine ECM
Illustration 1 g06136193
Sensors and components that are connected to the engine ECM
Table 1
Additional Components That May Be Applicable For Certain Applications
Throttle Position Sensor Cooling Fan Solenoid
Ambient Air Temperature Sensor Engine Fan Reversing Solenoid
Coolant Level Sensor Air Filter Restriction Pressure Sensor
Ether Solenoid Compression Brake Solenoids
Table 2
Component Name Conversion to the Electronic Service Tool
Caterpillar ET Display Component Name Troubleshooting Guide Component Name
Engine charge air cooler #1 outlet temperature Charge air cooler outlet temperature
EGR differential pressure NRS differential pressure sensor
EGR intake pressure (absolute) NRS intake pressure sensor
EGR temperature NRS temperature sensor
EGR valve NRS valve
DPF #1 intake pressure DPF intake pressure
DPF #1 intake temperature DPF inlet temperature sensor Engine
Illustration 2 g03744018
Sensor and component locations on the left side of the 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) Electronic Control Module (ECM)
(8) Barometric pressure sensor
(9) Primary speed/timing sensor
(10) Oil pressure sensor
Illustration 3 g03744022
Close up views of sensor and component locations on the left side of 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) Electronic Control Module (ECM)
(8) Barometric pressure sensor
(9) Primary speed/timing sensor
(10) Oil pressure sensor
Illustration 4 g03744037
Sensor and component locations on the right side and top of a typical C7.1 engine
(11) NOx Reduction System (NRS) differential pressure sensor
(12) NRS inlet pressure sensor
(13) NRS inlet temperature sensor
(14) NRS valve including a position sensor
(15) Wastegate regulator
(16) Turbocharger outlet temperature sensor
(17) Secondary speed/timing sensor
(18) Exhaust Back Pressure Regulator (EBPR)
Illustration 5 g03744047
Close up views of sensor locations on the top of a typical C7.1 engine
(11) NOx Reduction System (NRS) differential pressure sensor
(12) NRS inlet pressure sensor
(13) NRS inlet temperature sensor
(14) NRS valve including a position sensor
(15) Wastegate regulator
(18) Exhaust Back Pressure Regulator (EBPR)Clean Emission Module (CEM)
Illustration 6 g03744057
Sensors and components on the Integrated Clean Emissions Module (IG CEM) (view 1)
(19) Diesel Particulate Filter (DPF) outlet NOx sensor
(20) Soot sensor antenna
(21) SCR intake temperature probe
(22) Aftertreatment ID module
(23) Temperature sensor
(24) Diesel Exhaust Fluid (DEF) injector
Illustration 7 g03744494
Sensors and components on the Integrated Clean Emissions Module (IG CEM) (view 2)
(25) DPF intake temperature probePump, Electronics, and Tank Unit (PETU)
Illustration 8 g03744500
Sensors and components on the Pump, Electronics, and Tank Unit (PETU)
(26) DEF tank temperature, level, and quality sensor
(27) 4-pin connector
(28) 12-pin connector
(29) Power relay for heated DEF lines
(30) Power relay for DCU
(31) Coolant diverter valve