Cummins Industrial Celect Plus Wiring Diagram | ECM Pinout, Injectors, Sensors & J1939 System (Bulletin 3666348)

Technical Highlights

• Full ECM pinout with wire identification (M11 / N14 harnesses)
• Complete injector wiring (cylinders 1–6 with supply & return mapping)
• Sensor circuits:
  • Coolant temperature
  • Oil pressure & temperature
  • Boost pressure
  • Ambient air pressure & temperature
• Throttle system:
  • Throttle position sensor (+5V, signal, return)
  • Idle validation signals (ON/OFF idle)
• Engine control systems:
  • Engine brake control (multi-stage selector)
  • PTO 1 / PTO 2 signals
  • Clutch and brake switch inputs
• Communication:
  • J1939 control data link
  • J1587 service data link
• Diagnostic systems:
  • Red / Yellow diagnostic lamps
  • Engine protection lamp
• Power distribution:
  • Battery supply and return
  • Fuse-protected circuits
• OEM vs Cummins wiring separation clearly defined

👉 The main diagram on page 1 shows a complete ECM-centered architecture with injector mapping, sensor distribution, and control signals routed through OEM and Cummins harness sections.

Table of Content

• ECM Connector & Harness Layout
• Injector Circuits (Cylinder 1–6)
• Sensor Network Wiring
• Throttle & Idle Validation System
• Engine Brake & PTO Control
• Clutch, Brake & Switch Inputs
• Data Link Communication (J1939 / J1587)
• Diagnostic Lamps & Signals
• Power Supply & Ground Distribution

File Information

• Manufacturer: Cummins
• System: Industrial Celect Plus
• Supported Engines: M11 / N14
• ECM Type: Celect Plus ECM
• Document Type: Wiring Diagram
• Bulletin: 3666348
• Format: PDF
• Pages: 1
• Content: Electrical Schematics, Pinout, Injector & Sensor Mapping