| Connector | Function | |
| J1/P1 | Electronic Control Module (ECM) Connectors | |
| J2/P2 | ECM Connectors | |
| J61/P61 | Customer Connector | |
| J63/P63 | Service Tool Connector | |
| J66/P66 | Customer Supplied Service Tool Connector | |
| J100/P100 | Coolant Temperature Sensor | |
| J103/P103 | Intake Manifold Air Temperature Sensor | |
| J105/P105 | Fuel Temperature Sensor | |
| J142/P142 | Auxiliary Temperature Sensor | |
| J200/P200 | Turbocharger Outlet Pressure Sensor | |
| J201/P201 | Engine Oil Pressure Sensor | |
| J203/P203 | Atmospheric Pressure Sensor | |
| J209/P209 | Fuel Pressure Sensor | |
| J220/P220 | Auxiliary Pressure Sensor | |
| J300/P300 | Valve Cover Connector | |
| P400 | Timing Calibration Connector | |
| J401/P401 | Primary Engine Speed/Timing Sensor | |
| J402/P402 | Secondary Engine Speed/Timing Sensor | |
| J403/P403 | Throttle Position Sensor | |
| J800/P800 | Coolant Level Sensor | |
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| Illustration 1 | g01145144 |
Components for the C-10 and the C-15 | |
C-10 Engine
 | |
| Illustration 2 | g01123505 |
Left side engine view ( C-10) (1) Coolant temperature sensor (2) Fuel temperature sensor (3) Fuel presssure sensor (4) Intake manifold air temperature sensor (5) P300 Valve cover connector (6) Turbocharger outlet pressure sensor (7) Atmospheric pressure sensor (8) Secondary engine speed/timing sensor (9) Primary engine speed/timing sensor (10) Engine oil pressure sensor (11) P400 Timing calibration connector (12) ECM (13) J2 ECM connector (14) J1 ECM connector (15) J61 Customer connector (16) J63 Service tool connector | |
C-15 Engine
 | |
| Illustration 3 | g01145145 |
Left side engine view ( C-15) (1) Coolant temperature sensor (2) Turbocharger outlet pressure sensor (3) J61 Customer connector (4) J63 Service tool connector (5) P300 Valve cover connector (6) Fuel temperature sensor (7) P400 Timing calibration connector (8) Intake manifold air temperature sensor (9) Primary engine speed/timing sensor (10) Secondary engine speed/timing sensor (11) Fuel presssure sensor (12) Atmospheric pressure sensor (13) Engine oil pressure sensor (14) ECM (15) J2 ECM connector (16) J1 ECM connector | |