Cummins Celect Plus ECM Wiring Diagram | Full Pinout, Injectors, Sensors & J1939 Data Link (Bulletin 3666146-04)

Technical Highlights

• Full ECM pinout (Connector A / B / C layout)
• Complete injector wiring (6-cylinder configuration)
• Sensor circuits:
  • Engine position sensors
  • Oil pressure & temperature
  • Coolant temperature & level
  • Boost & ambient pressure
• J1939, J1922, and J1587 data link communication
• Engine brake and actuator control wiring
• Power supply, ignition, and grounding circuits
• OEM vs Cummins wiring architecture clearly separated
• Color-coded wiring (power, signal, return, datalink)

👉 The main diagram on page 1 clearly maps ECM connectors to injectors, sensors, and actuators with full signal routing and wire identification.

Table of Content

• ECM Wiring Overview
• Connector A / B / C Pin Assignment
• Injector Driver Circuits
• Sensor Wiring Network
• Engine Brake & Actuator Circuits
• Power Supply & Ground Distribution
• Data Link Communication (J1939 / J1587 / J1922)
• OEM vs Cummins Wiring Interface

File Information

• Manufacturer: Cummins
• System: Celect Plus
• Supported Engines: M11 / N14
• ECM Type: Celect Plus ECM
• Document Type: Wiring Diagram
• Bulletin: 3666146-04
• Format: PDF
• Pages: 1
• Content: Electrical Schematics, Pinout, Signal Routing