Cummins ISL8.9 CM2150 SN Wiring Diagram | ECM Pinout, Injectors & J1939 Network (4022165)

Coverage

• ECM wiring (engine harness and OEM connector)
• Injector driver circuits (6 cylinders)
• Engine sensor network and 5V supply circuits
• Turbocharger system (VGT actuator & speed sensor)
• Fuel system (rail pressure, lift pump, actuator)
• Cooling and monitoring sensors
• Aftertreatment system (NOx sensor, DEF dosing unit)
• SAE J1939 CAN data link
• SAE J1708 data link support
• Diagnostic connector (9-pin Deutsch)
• Accelerator pedal and control switches
• Dashboard indicators and warning lamps

Technical Highlights

• Full ECM pinout with detailed signal mapping
• 6-cylinder injector control architecture
• Integrated VGT turbocharger control via J1939
• Dual data networks (J1939 + J1708)
• Color-coded wiring for signal clarity
• Advanced aftertreatment system integration
• Battery, ignition, and fuse-protected circuits
• OEM vs Cummins responsibility separation

Table of Content

• Wiring Diagram Overview
  • Signal Legend and Color Codes
  • Wiring Symbols and Pin Identification
• Power Distribution
  • Battery Supply
  • Ignition Input
  • Fuse Protection
• Engine Control Module (ECM)
  • ECM Overview
  • Engine Harness Connector
  • OEM Harness Connector
• Engine Sensors
  • Crankshaft Position Sensor
  • Camshaft Position Sensor
  • Fuel Rail Pressure Sensor
  • Intake Manifold Pressure / Temperature Sensor
  • Barometric Pressure Sensor
  • Coolant Temperature Sensor
  • Water in Fuel Sensor
  • Oil Pressure Sensor / Switch
• Fuel System
  • Fuel Pump Actuator
  • Fuel Lift Pump
  • Injector Circuits (1–6)
• Turbocharger System
  • VGT Actuator
  • Turbo Speed Sensor
  • Intake Air Temperature Sensor
• Aftertreatment System
  • NOx Sensor
  • DEF Dosing Unit
  • DEF Tank Sensors
  • DEF Line Heater System
• Vehicle Interface (OEM Side)
  • Accelerator Pedal Assembly
  • Cruise Control Switches
  • Brake and Clutch Switches
  • Fan and AC Controls
• Communication Network
  • SAE J1939 Data Link
  • SAE J1708 Data Link
  • CAN Bus Termination
• Diagnostics
  • Service Tool Connector
  • 9-Pin Deutsch Connector
• Instrumentation & Outputs
  • Tachometer / Tachograph
  • Warning Lamps (MIL, Stop, Warning)
  • Starter Lockout
  • Engine Brake System

File Information

• Manufacturer: Cummins Inc.
• Engine Model: ISL8.9
• ECM Type: CM2150 SN
• Document Type: Wiring Diagram
• Bulletin Number: 4022165-01
• Language: English
• Format: PDF
• Pages: 1 (large-format schematic)