Sensors and Electrical Connectors
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| Connector | Function |
| J1/P1 | ECM Connector (70-Pin Harness) |
| J2/P2 | ECM Connector (70-Pin Harness) |
| J62 | Service Tool Connector |
| J100/P100 | Coolant Temperature Sensor (2 Pin) |
| J103/P103 | Inlet Manifold Temperature Sensor (2 Pin) |
| J105/P105 | Fuel Temperature Sensor (2 Pin) |
| J200/P200 | Turbocharger Outlet Pressure Sensor (3 Pin) |
| J201/P201 | Engine Oil Pressure Sensor (3 Pin) |
| J203/P203 | Atmospheric Pressure Sensor (3 Pin) |
| J205/P205 | Right Turbocharger Inlet Pressure Sensor (3 Pin) |
| J209/P209 | Fuel Pressure Sensor (3 Pin) |
| J300/P300 | Injector Solenoid Harness (12 Pin) |
| J301/P301 through J306/P306 |
Connectors for Electronic Unit Injectors |
| J400/P400 | Engine Timing Calibration Probe (2 Pin) |
| J401/P401 | Primary Engine Speed/Timing (Crankshaft Position) Sensor (2 Pin) |
| J402/P402 | Secondary Engine Speed/Timing (Camshaft Position) Sensor (2 Pin) |
| J403/P403 | Throttle Position Sensor (3 Pin) |
| J508/P508 | Fan Control Solenoid (2 Pin) |
| J700/P700 | Ground Level Shutdown Switch |
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| Illustration 1 | g00693506 |
ECM and harness connectors | |
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| Illustration 2 | g00839900 |
Block diagram | |
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| Illustration 3 | g00838488 |
3176C sensor locations | |
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| Illustration 4 | g00839246 |
3406E sensor locations | |
Caterpillar Information System:
973C Track-Type Loader Steel Mill Arrangement Fuses - Replace
988G Wheel Loader Machine Systems Hydraulic Tank - Install
651E and 657E Wheel Tractor-Scrapers Hydraulic System Hydraulic Cylinder Drift - Check
3034 Engine for Caterpillar Built Machines Connecting Rod Bearing Journal
910G HYSTAT Wheel Loader Fuel System Water Separator Element - Replace
910G HYSTAT Wheel Loader Fuel System Water Separator - Drain
910G HYSTAT Wheel Loader Towing the Machine
910G HYSTAT Wheel Loader Fuel Tank Cap - Clean
651E and 657E Wheel Tractor-Scrapers Wheel Tractor Power Train Torque Converter
651E and 657E Wheel Tractor-Scrapers Wheel Tractor Power Train Flywheel Scavenge Pump
3054 Engine Fuel Quality - Test
651E and 657E Wheel Tractor-Scrapers Wheel Tractor Power Train Transmission Scavenge Pump
525B Wheel Skidder and 535B Wheel Skidder Power Train Solenoid Valve (Differential Lock)
3126B Engines for Caterpillar Built Machines Engine Oil Pump - Install
651E and 657E Wheel Tractor-Scrapers Wheel Tractor Power Train Transmission Case
3034 Engine for Caterpillar Built Machines Crankshaft Pulley
2000/03/27 An Assembly Procedure Changes Due to a Wire that is Rerouted {5059, 5705}
525B Wheel Skidder and 535B Wheel Skidder Power Train Speed Sensor (Transmission Output)
651E and 657E Wheel Tractor-Scrapers Wheel Tractor Power Train Retarder
525B Wheel Skidder and 535B Wheel Skidder Power Train Torque Converter
651E and 657E Wheel Tractor-Scrapers Wheel Tractor Power Train Drive Shaft
545 Wheel Skidder Power Train Transmission Case
2000/04/03 Improved Panel Assemblies are Used to Increase Service Life {7251}
910G HYSTAT Wheel Loader Cooling System Coolant Additive (DEAC) - Add