What is a Dacia Logan Van II airbag control unit?
The Dacia Logan Van II airbag control unit is the central safety unit in your vehicle, precisely activating all occupant restraint systems, such as airbags and seatbelt pretensioners, in the event of a collision. It continuously monitors relevant sensors and stores important crash data, ensuring the full functionality of the entire airbag system for your safety.
This essential component is manufactured by Dacia, part of the Renault Group, as the Airbag Control Unit (ACU).
It consists of a robust plastic housing designed for reliable integration into the vehicle. The control unit features a flat connector with a connector circuit for connection to the CAN bus and various sensor signals.
Its primary function is to monitor the airbag sensors and pyrotechnic triggers. It controls the lightning-fast deployment of the airbags and seatbelt pretensioners in the event of an accident.
Important safety features include crash data storage, redundant sensor monitoring, comprehensive fault diagnostics, and warning light control.
The Dacia Logan Van II airbag control unit is suitable for the Dacia Logan II, including the Logan MCV II and Logan Van II variants produced from model year 2013 onwards.
It is compatible with various engine variants, including petrol and diesel versions (e.g., 1.2 16V, 1.5 dCi, 1.6 16V). Exact compatibility depends on the engine configuration and trim level and requires vehicle-specific coding.
Why is the Dacia Logan Van II airbag control unit defective?
A Dacia Logan Van II airbag control unit is often defective because, after an accident, the internal crash data is irretrievably stored, thus rendering the unit inoperable. Internal hardware or software errors, as well as communication problems, can also lead to failure, necessitating repair of the Dacia Logan Van II airbag control unit.
After an impact, the relevant crash data is stored in the control unit, which blocks it and causes the airbag warning light to illuminate permanently.
Other common causes include internal component defects or software errors in the control unit itself, which can impair its proper functioning.
Moisture ingress or electrical surges in the vehicle can also damage the sensitive system and cause a failure.
A damaged control unit or faults in the wiring can lead to communication problems with the diagnostic device, making accurate error analysis difficult.
In such cases, a professional repair of the Dacia Logan Van II airbag control unit or replacement by a specialist workshop is essential to restore vehicle safety.
Common error codes for Dacia Logan Van II airbag control unit repair
When diagnosing the Dacia Logan Van II airbag control unit, specific error codes often occur, indicating internal problems or blocked functions. These codes signal that a professional repair of the Dacia Logan Van II airbag control unit is required to restore the vehicle's safety features.
- B1000 → Control unit communication error → Indicates problems connecting the airbag ECU to other vehicle systems or the diagnostic tool.
- 36871 → Driver airbag firing circuit error → This code indicates a defect in the driver airbag firing circuit, which is detected by the control unit.
- 9007 / B1007 → Control Unit Internal Error → Reports internal hardware or software defects within the airbag control unit itself.
- 36992 → Crash data saved, control unit blocked → This critical error occurs after an accident because the control unit saves non-erasable crash data and is therefore blocked.
These error codes are OBD-II compliant or manufacturer-specific and relate directly to the function of the airbag control unit. Diagnosing these codes is the first step toward a successful Dacia Logan Van II airbag control unit repair.
What part numbers are available for the Dacia Logan Van II airbag control unit repair?
When repairing or replacing a Dacia Logan Van II airbag control unit, specific original part numbers are crucial to ensure compatibility with your vehicle model. These OEM numbers guarantee that the replacement or repair part is a precise fit for your Dacia Logan Van II and meets all safety standards.
The most frequently cited original part number for the Dacia Logan II airbag control unit, including van models, is 8201163278 (Dacia Original OEM).
Another important number is 985102122R, often from Dacia/Bosch, which exactly fits Logan II 1.5 dCi variants.
Also 985106332R is an original Dacia airbag control unit for Logan II and MCV II, compatible with certain engines.
The Bosch number 0285001650 is an important OEM supplier comparison point, although it is primarily listed for Logan I models.
The OEM number 8200769222 (Dacia/Temic) can also be found in the Logan II environment, suitable for Logan MCV (KS_) with various engines.
Additionally, 985102787R is confirmed as the exact Dacia OEM number for airbag control units in various Logan variants.
These numbers are crucial when planning a repair of the Dacia Logan Van II airbag control unit, as they guarantee an exact model and series match.