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Home›Repair guides›Volvo Penta›Control unit (ECU), replacement

Volvo Penta Group 23 EDC III — Control unit (ECU), replacement

Repair & overhaul

For the Volvo Penta Group 23 EDC III, from the Volvo Penta service manual.

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Before you start

  • The cable glove should be disconnected from the control unit when welding.

Procedure

  1. Cut off power to the engine.
  2. Remove the fuel cooling coil and fuel line clamps; bend aside the cooling coil.
  3. Disconnect the cable glove from the control unit (press catch, push glove upwards).
  4. Remove the control unit.
  5. Transfer the rubber cushions to the new control unit.
  6. Fit the new control unit.
  7. Connect the cable glove (ensure safety catch is set).
  8. Fit the cooling coil and fuel line clamps.
  9. Start the engine and perform leakage and functionality checks.

Source: Volvo Penta service manual. Steps and values are as documented; always cross-check against the official manual and any later revisions for your exact serial number before servicing.

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