Cummins CENSE K38 K50 Wiring Diagram | ECM Pinout, Sensors, Dual Bank System & Data Links (Bulletin 3666138)

Technical Highlights

• Full main harness layout (40-pin Deutsch connectors A & B)
• Complete dual-bank architecture (Left Bank / Right Bank)
• Extensive sensor coverage:
  • Intake manifold pressure & temperature
  • Turbocharger inlet temperature
  • Oil pressure (pre/post filter)
  • Coolant pressure & temperature
  • Rail pressure & blowby pressure
• Multiple temperature sensors per cylinder (bank-specific)
• Advanced data communication protocols:
  • RS232
  • RS422
  • J1587 datalink
• Diagnostic lamp circuits (red, yellow, blue)
• Power distribution:
  • 24V system (industrial application)
• OEM vs Cummins wiring separation

👉 The main schematic on page 1 shows a complex multi-zone layout with sensor harnesses, ECM connections, and dual-bank monitoring systems, including full signal routing and connector pin identification.

Table of Content

• Main Harness Layout (40-Pin Connectors)
• Dual Bank Sensor Architecture (Left / Right Bank)
• Temperature Sensor Network (Multi-cylinder mapping)
• Oil Pressure & Filtration Monitoring Circuits
• Intake & Turbocharger Sensor Circuits
• Coolant & Blowby Pressure Systems
• Rail Pressure System
• Communication Systems (RS232 / RS422 / J1587)
• Diagnostic Lamps & Control Signals
• Power Supply & Ground Distribution

File Information

• Manufacturer: Cummins
• System: CENSE Engine Management
• Supported Engines: K38 / K50
• Document Type: Wiring Diagram
• Bulletin: 3666138-01
• Format: PDF
• Pages: 1
• Content: Electrical Schematics, Pinout, Dual-Bank Sensor Architecture