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CM2150 Electronic Control System – 100-002   Engine Diagrams

Table of Contents

Engine Views

Engine Views

 TOC

The following illustrations show the locations of the major external engine components, filters, and other service and maintenance points. Some external components will be at different locations for different engine models.

NOTE: The illustrations are only a reference to show a typical engine.

SMALL | MEDIUM | LARGE
ISB6.7L Engine – CM2150 Electronic Control System – Rear Gear Train – Front View

  1. Alternator mounting location
  2. Coolant outlet connection/Thermostat housing
  3. EGR connection tube
  4. EGR valve
  5. Fan hub location
  6. Oil pressure switch
  7. Engine speed/position sensor (camshaft)
  8. Engine speed/position sensor (crankshaft)
  9. Vibration damper (viscous)
  10. Front gear cover
  11. Water pump
  12. Refrigerant compressor mounting location
  13. Automatic belt tensioner
  14. Turbocharger compressor inlet
  15. Turbocharger compressor outlet.

SMALL | MEDIUM | LARGE
ISB6.7L Engine – CM2150 Electronic Control System – Rear Gear Train – Left View

  1. Fuel filter (pressure side)
  2. Service diagnostic test connection
  3. Air compressor coolant supply tube
  4. Rear engine lifting bracket
  5. Air compressor (high mount shown)
  6. Air compressor inlet tube
  7. Fuel drain line (combined)
  8. Fuel supply line (to fuel filter)
  9. Fuel supply line (from fuel filter)
  10. High pressure fuel pump
  11. OEM fuel drain connection
  12. Fuel pump actuator
  13. Oil drain plug
  14. Oil pan heater mounting location
  15. OEM fuel inlet connection
  16. Fuel supply tube (fuel pump to fuel rail)
  17. OEM accessory drive mounting location
  18. Main oil gallery test ports
  19. Oil pan
  20. Oil level sensor location (optional)
  21. Crankshaft speed indicator ring
  22. Electronic control module (ECM)
  23. Oil level gauge (dipstick)
  24. Intake air inlet
  25. Fuel drain tube (fuel rail pressure relief valve).

SMALL | MEDIUM | LARGE
ISB6.7L Engine – CM2150 Electronic Control System – Rear Gear Train – Rear View

  1. Cylinder head fuel drain (injector) connection
  2. Exhaust outlet connection
  3. Flywheel – manual transmissions
  4. Flexplate – automatic transmissions (not shown)
  5. Flywheel housing
  6. Air compressor coolant return tube.

SMALL | MEDIUM | LARGE
ISB6.7L Engine with External Flywheel Housing Mounted Breather System – CM2150 Electronic Control System – Rear Gear Train – Rear View

  1. Crankcase ventilation filter housing
  2. Breather connection tube (rocker lever cover to rear gear housing)
  3. Closed crankcase ventilation valve
  4. Crankcase breather outlet tube to turbocharger intake
  5. Crankcase breather oil drain tube
  6. Crankcase breather tube (flywheel housing to crankcase ventilation filter housing)
  7. Crankcase pressure sensor.

SMALL | MEDIUM | LARGE
ISB6.7L Engine – CM2150 Electronic Control System – Rear Gear Train – Right View

  1. EGR cooler
  2. Variable geometry turbocharger coolant return tube
  3. Crankcase breather outlet tube to turbocharger intake
  4. Turbocharger compressor outlet
  5. EGR cooler coolant return tube
  6. Front engine lifting bracket
  7. Exhaust pressure sensor tube
  8. Oil pressure regulator
  9. Oil filter head/Oil cooler
  10. Water inlet connection
  11. Oil filter
  12. Coolant heater port
  13. Variable geometry turbocharger oil supply tube
  14. Variable geometry turbocharger coolant supply tube
  15. Variable geometry turbocharger oil drain tube
  16. Starting motor
  17. Gear housing (rear)
  18. Service access/Barring port
  19. Variable geometry turbocharger actuator
  20. Variable geometry turbocharger (VGT)
  21. Exhaust manifold.

SMALL | MEDIUM | LARGE
ISB6.7L Engine – CM2150 Electronic Control System – Rear Gear Train – Top View

  1. EGR cooler
  2. Crankcase ventilation filter cover*
  3. Turbocharger speed sensor
  4. EGR cooler coolant supply tube
  5. Crankcase pressure sensor**
  6. Rocker lever cover
  7. Injector wiring harness pass-through connector (1 of 2)***
  8. Fuel rail pressure sensor
  9. Fuel injector supply lines (high pressure – 6 total)
  10. Intake air manifold temperature/pressure sensor
  11. Fuel rail
  12. Crankcase breather oil drain tube (1 of 2)
  13. Intake air heater positive terminal
  14. Fuel pressure relief valve
  15. Injector wiring harness pass-through connector (1 of 2)***
  16. Crankcase breather oil drain tube (2 of 2)
  17. Intake air heater (internal to intake manifold)
  18. EGR temperature sensor
  19. Oil fill (rocker lever cover)
  20. Coolant temperature sensor
  21. Exhaust pressure sensor
  22. De-aeration port (to OEM coolant top tank).
  • * On engines equipped with an externally mounted breather, the crankcase ventilation filter is located at the rear of the engine.
  • ** On engines equipped with an externally mounted breather, the crankcase pressure sensor is located in the crankcase ventilation filter housing at the rear of the engine.
  • *** On engines equipped with an externally mounted breather, the injector wiring pass-through connectors (3) will be located in the rocker lever housing.

SMALL | MEDIUM | LARGE
ISC/ISL – Front View

  1. Turbocharger compressor air inlet
  2. Air intake connection
  3. Top Dead Center indicator
  4. Fuel pump drive gear access cover
  5. Fan pulley
  6. Front gear cover
  7. Vibration damper
  8. Front engine mounting bracket
  9. Engine lubricating oil pan drain plug
  10. Belt tensioner
  11. Water pump
  12. Idler pulley
  13. Front engine lifting bracket
  14. Turbocharger.

SMALL | MEDIUM | LARGE
ISC/ISL – Left View

  1. Ambient air pressure sensor
  2. Fuel rail pressure sensor
  3. Intake manifold temperature and pressure sensor
  4. Fuel rail
  5. Fuel rail high pressure relief valve
  6. Fuel drain manifold
  7. Crankcase breather oil drain tubes
  8. Fuel filter
  9. Crankshaft speed sensor
  10. Starter
  11. Engine oil heater mounting boss
  12. Engine oil fill
  13. Lubricating oil pressure sensor
  14. Dipstick location
  15. Air compressor oil supply line
  16. Fuel lift pump (behind ECM)
  17. Electronic control module
  18. Air compressor
  19. Gear housing
  20. Camshaft speed sensor
  21. Air compressor coolant drain line
  22. Air compressor coolant supply line
  23. Engine dataplate
  24. Fuel pump.

SMALL | MEDIUM | LARGE
ISC/ISL – Rear View

  1. Crankcase breather draft tube
  2. Turbocharger speed sensor
  3. Turbocharger exhaust outlet
  4. Injector drain line connection
  5. Flywheel
  6. OEM fuel supply line connection
  7. OEM fuel drain line connection
  8. Rear engine lifting bracket.

SMALL | MEDIUM | LARGE
ISC/ISL – Right View

  1. Turbocharger coolant drain
  2. Turbocharger coolant supply
  3. Turbocharger oil supply line
  4. Exhaust gas pressure sensor tube
  5. Rocker lever housing
  6. Coolant outlet connection
  7. Lubricating oil thermostat
  8. Coolant temperature sensor
  9. Alternator
  10. EGR cooler coolant return
  11. Coolant inlet connection
  12. Lubricating oil cooler
  13. Coolant drain petcock
  14. Lubricating oil pressure regulator
  15. Lubricating oil filter
  16. Dipstick location
  17. Lubricating oil pan
  18. Flywheel housing
  19. Engine barring port
  20. Turbocharger oil drain line
  21. EGR cooler coolant supply
  22. Exhaust manifold.

SMALL | MEDIUM | LARGE
ISC/ISL – Top View

  1. Turbocharger compressor air outlet
  2. Turbocharger actuator
  3. EGR cooler
  4. Crankcase breather
  5. Rocker lever cover
  6. Crankcase breather draft tube
  7. Crankcase breather oil drain tubes
  8. EGR valve
  9. Exhaust gas temperature sensor
  10. EGR differential pressure sensor
  11. Fuel pump actuator
  12. Crankcase pressure sensor
  13. EGR crossover tube
  14. Engine oil fill
  15. Thermostat
  16. Exhaust gas pressure sensor
  17. Turbocharger compressor inlet temperature sensor.

SMALL | MEDIUM | LARGE
QSB3.3 Engine (Turbocharged) – Front View

  1. Turbocharger wastegate actuator
  2. Turbocharger compressor inlet
  3. Air intake inlet
  4. Fuel filter
  5. Water pump
  6. Crankshaft position sensor
  7. Lubricating oil filter
  8. Camshaft position sensor
  9. Alternator
  10. Alternator belt adjustment link.

SMALL | MEDIUM | LARGE
QSB3.3 Engine (Turbocharged) – Left View

  1. Lubricating oil fill cap
  2. Lubricating oil dipstick
  3. Intake air heater
  4. Engine lifting bracket
  5. Fuel rail
  6. Fuel rail pressure sensor
  7. Barometric air pressure sensor
  8. Flywheel housing
  9. Starter motor
  10. Lubricating oil pan drain plug
  11. Lubricating oil pressure switch
  12. Crankshaft position sensor
  13. Bosch® fuel pump
  14. Fuel pump actuator
  15. Fuel rail pressure relief valve
  16. Coolant temperature sensor
  17. Fuel filter
  18. Coolant outlet.

SMALL | MEDIUM | LARGE
QSB3.3 Engine (Turbocharged) – Rear View

  1. Intake air heater
  2. Engine lifting bracket
  3. Turbocharger compressor outlet
  4. Exhaust manifold
  5. Alternator
  6. Lubricating oil cooler
  7. Flywheel
  8. Starter motor
  9. High-pressure injector.

SMALL | MEDIUM | LARGE
QSB3.3 Engine (Turbocharged) – Right View

  1. Exhaust manifold
  2. Turbocharger
  3. Turbocharger wastegate actuator
  4. Engine lifting bracket
  5. Alternator
  6. Turbocharger lubricating oil supply line
  7. Turbocharger lubricating oil drain line
  8. Lubricating oil filter.

SMALL | MEDIUM | LARGE
QSB3.3 Engine (Turbocharged) – Top View

  1. Alternator
  2. Turbocharger
  3. Lubricating oil filter
  4. Crankcase breather tube
  5. Intake manifold pressure/temperature sensor
  6. Fuel filter head
  7. Fuel pump actuator
  8. High-pressure injector lines
  9. Injector drain lines
  10. Coolant temperature sensor.
Last Modified:  26-Feb-2010
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