2011 Volvo XC90 V8FACTORY OEM SERVICE PROCEDURE

Clutch Unit And Control Module

Fig 1: Coupling Unit And Control Module
GLL107816Courtesy of VOLVO CARS CORPORATION

The hydraulic section consists of 1-5, the mechanical consists of 6-10 and the electronic section consists of 11-13:

  1. Pressure valves
  2. Accumulator
  3. Oil filter
  4. Ring pistons
  5. Control valve/axial solenoid
  6. Input shaft
  7. Inner and outer wet clutch plates
  8. Inner clutch hub with sine shape cam disc
  9. Rollers with ring pistons
  10. Output shaft
  11. Electrical feed pump
  12. Differential Electronic Module (DEM)
  13. Oil pressure and temperature sensor

The Differential Electronic Module (DEM) is fitted on the clutch unit housing.

The Differential Electronic Module (DEM) communicates with other control modules via Controller Area Network (CAN) communication:

The control module has an integrated diagnostic system.

Factory Service Tools

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • β€’ You smell fuel, burning insulation, or see smoke.
  • β€’ Brakes feel soft, pull hard to one side, or make grinding noises.
  • β€’ The engine overheats, stalls repeatedly, or misfires under load.
  • β€’ You are missing required tools, torque specs, or safe lifting equipment.
  • β€’ You are not confident in the next step or safety outcome.

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