What is a Nissan Sunny N16 airbag control unit?
The Nissan Sunny N16 airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It monitors sensors, stores crash data, and ensures the proper functioning of all airbag modules in the vehicle, which is essential for safety.
This safety-critical component captures signals from acceleration sensors and impact sensors. It decides within milliseconds whether airbags and seatbelt pretensioners need to be deployed.
The control unit operates with 12V vehicle electrical system voltage, performs continuous self-diagnosis and reports malfunctions via the warning light in the dashboard.
It communicates with other control units via the CAN bus and must be correctly trained to the vehicle after a replacement or repair.
Why is the Nissan Sunny N16 airbag control unit defective?
The Nissan Sunny N16 airbag control unit often fails because it stores crash data after an accident, requiring a reset, or internal malfunctions such as communication problems can occur. Age-related wear and tear on the electronics can also lead to failure, necessitating repair.
A common reason for a defect is the storage of crash information, even in minor accidents without airbag deployment.
Internal electronic errors, such as those indicated by error code B1239 ("Airbag Control Module defective"), are also a primary cause for the need for a Nissan Sunny N16 airbag control unit repair.
Sometimes there are problems in communication with other vehicle systems, signaled by codes such as B1000, which indicate an internal failure of the control unit.
Common error codes for Nissan Sunny N16 airbag control unit repair
Diagnosing specific trouble codes is crucial to a successful Nissan Sunny N16 airbag control unit repair because they indicate exactly where the problem lies - be it a communication error or impact information stored in the control unit that requires a reset.
- B1000 : Control unit communication error → Signals a malfunction in the communication between the airbag ECU and other systems.
- B1239 : Airbag Control Module defective → Indicates that the airbag control module itself has an internal defect or needs to be reset.
- B1414 : Airbag Computer Module Error → Typically requires a reset or repair of the control module due to an internal failure.
- B1210 : Roof airbag module or squib triggered → A crash entry stored in the airbag ECU that requires repair or reset.
- B1211 : Roof airbag module or squib and restraint system deployed → This code signals a stored impact in the control module, often with seat belt pretensioner deployment.
- B1421 : Frontal impact detected, driver and/or passenger airbag deployed → The airbag ECU has registered a frontal crash, which requires repair or a reset of the crash data.
- B1422 : Side impact detected; curtain airbag module and seat belt pretensioners deployed → This code indicates a side impact that is stored in the control module and requires crash data repair.
What part numbers are available for the Nissan Sunny N16 airbag control unit repair?
Accurate identification of the part number is essential for a successful Nissan Sunny N16 airbag control unit repair, as it ensures compatibility of the replacement part. Various OEM numbers from Bosch and Nissan are validated for this model.
The corresponding control units are often installed in both the Nissan Sunny N16 and the technically similar Nissan Almera N16.
Bosch is the main supplier of these airbag control units, which is reflected in the frequently occurring Bosch part numbers.
- 0285001319 : Bosch, Genuine OEM → Common Bosch part number for the Nissan Sunny N16 airbag control unit.
- 98820-5M304 : Nissan, Genuine OEM → An official Nissan OEM designation compatible with the Bosch control unit.
- 285565M301G : Nissan, Genuine OEM → Another Nissan OEM part number that fits diesel variants of the Almera N16 and Sunny N16.
- 0285001316 : Bosch, Original OEM → An alternative Bosch part number that is also compatible with the Almera N16 and Sunny N16.
- 0285001638 : Bosch, Genuine OEM → A Bosch part number specifically used for certain trim levels such as the Almera N16 Acenta.