3805471 Control Unit Kit Core | Genuine Volvo Penta Part

🔧 Product Description

Core deposit for a control unit kit, in the Ignition and Control Systems group. It is the refundable charge raised against the old control unit kit when the exchange unit is bought, and it comes back once the worn control unit kit is returned. The line itself is an accounting entry rather than a part, so nothing ships against it on its own. Under Volvo Penta's core numbering the exchange unit it belongs to takes part number 3802471, which our own listings carry as a remanufactured control unit kit. Seven control unit kit cores run side by side here, 3805466 to 3805472, and nothing published against them separates one from another, so the deposit has to be ordered by the number that matches the control unit kit actually coming off rather than by anything in the description.

⚙️ Key Features

• Core deposit line, not a control unit kit you can fit
• Belongs with the exchange unit, part number 3802471
• Refunded when the old control unit kit is returned
• One of seven control unit kit cores listed here, separable only by part number

🔌 Function

As a line item it carries the refundable core charge on the exchange; the kit itself supplies the electronic control unit and the parts that go with it, reading the sensors and driving injection, timing and the engine's protection functions.

⚠️ Common Signs of Failure

• This is a deposit line and has nothing to fail in itself; the signs below are what normally condemns the control unit kit being exchanged
• An engine that will not start, or cuts out at random with no fuel or air fault to be found
• Warning lamps and stored fault codes that come straight back after the sensors and wiring have been renewed
• No communication with the diagnostic tool, or a unit that drops off the bus once it warms up
• Erratic running, surging, or the engine dropping into limp mode for no traceable reason

🛠️ Service Notes

• The charge is refunded when the worn control unit kit is returned, so keep the old unit and send it back rather than scrapping it
• Ordering this number on its own supplies no part - it goes on the order beside the exchange unit, part number 3802471
• Prove the sensors, earths and connector pins before the unit is condemned, and expect the exchange kit to need programming to the vessel before the engine will run

📦 Condition

• Refundable core deposit - not a physical part