Technical Highlights
- Full ECM pinout (CM2150 SN multi-connector architecture)
- Common rail fuel system:
- Fuel rail pressure sensor
- Fuel pump actuator
- Injector control:
- 4-cylinder and 6-cylinder configurations
- Advanced sensor network:
- Engine crankshaft & camshaft position sensors
- Intake manifold pressure & temperature
- Barometric pressure
- Coolant temperature
- Oil pressure & oil level
- Water-in-fuel sensor
- SCR aftertreatment system:
- DEF dosing unit
- NOx sensor
- SCR temperature sensors
- DEF tank level & temperature
- DEF line heater system
- Air & control systems:
- Air solenoid
- Intake air heater
- Fan clutch control
- Communication:
- J1939 datalink
- J1708/J1587 datalink
- Diagnostic systems:
- MIL (malfunction indicator lamp)
- Red stop lamp
- Amber warning lamp
- Wait-to-start lamp
- Power distribution:
- ECM battery supply and ignition input
- Fuse-protected circuits
👉 The diagram on page 1 shows a full modern system integrating SCR, injectors, sensors, and ECM connections, with clear separation between OEM and Cummins wiring responsibilities.
Table of Content
- ECM Connector Layout (CM2150 SN)
- Injector Driver Circuits (4 & 6 Cylinder Configurations)
- Common Rail Fuel System Wiring
- Sensor Network (Pressure / Temperature / Position)
- SCR Aftertreatment System (DEF, NOx, Temperature)
- Air & Actuator Control Systems
- Data Link Communication (J1939 / J1708 / J1587)
- Diagnostic Lamps & Indicators
- Power Supply & Ground Distribution
File Information
- Manufacturer: Cummins
- System: ISB / ISD CM2150 SN Engine Management
- ECM Type: CM2150 SN
- Fuel System: Common Rail
- Aftertreatment: SCR (DEF System)
- Document Type: Wiring Diagram
- Bulletin: 4022164-02
- Format: PDF
- Pages: 1
- Content: Electrical Schematics, Pinout, SCR & Sensor Systems






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