What is a Nissan March K11 airbag control unit?
The Nissan March K11 airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It continuously monitors sensors such as crash and acceleration sensors, stores relevant crash data, and ensures the proper functioning of all airbag modules and seatbelt pretensioners in the vehicle to provide maximum occupant safety.
This safety-relevant electronic module is specifically designed for the second-generation Nissan March K11 compact city car (model years approximately 1992-2002).
It ensures that airbags and seat belt pretensioners are deployed reliably and precisely in an emergency, which is crucial for vehicle safety.
Why is the Nissan March K11 airbag control unit defective?
The Nissan March K11 airbag control unit often fails because it is sensitive to overvoltage, shows signs of aging in the internal electronics, or irreversibly stores crash data after an accident. This causes the airbag warning light to remain permanently illuminated, necessitating a Nissan March K11 airbag control unit repair or replacement.
Common causes are internal electronic errors that can arise from material fatigue or external influences such as moisture.
A defective control unit can impair the functionality of the entire airbag system and is a safety-relevant defect that must be remedied immediately.
Repairing the Nissan March K11 airbag control unit is often a cost-effective alternative to buying a new one, especially if only specific components fail or a crash record needs to be erased.
Common error codes for Nissan March K11 airbag control unit repair
During Nissan March K11 airbag control module repair, specific error codes may occur that indicate an internal defect in the control module. These codes, such as B1059 and B1139, signal that the module itself is malfunctioning, and repair or replacement is often necessary to restore system integrity.
- B1059 → Control unit defective → Internal error in the airbag control unit
- B1139 → Control unit defective → Critical software or hardware error of the control unit
- B1000 → Control unit communication error → Interruption of communication between ECU and diagnostic device or other modules
These error codes are typically accompanied by the airbag warning light, which stays on continuously to indicate a defect.
To read the exact codes, a special diagnostic tool is necessary, as standard OBD-II readers often cannot detect SRS errors.
What part numbers are available for the Nissan March K11 airbag control unit repair?
Specific and verified part numbers are relevant for Nissan March K11 airbag control unit repairs. These include Nissan OEM number 9858445B03 and Bosch numbers such as 407933-0752 and 0285001411. These markings are crucial for identifying the correct control unit, which was installed in K11 models from 1992 to 2002, and ensure the correct repair or replacement.
- 9858445B03 → Nissan → Original OEM part number for K11 models (approx. 1992-1997)
- 407933-0752 → Bosch → OEM supplier part number, often in conjunction with Nissan OEM numbers
- 0285001411 → Bosch → Alternative Bosch OEM number, compatible with Micra K11
- 28556AP002 → Autoliv (suspected) → Supplier part number, also compatible with Nissan Micra K11
These part numbers are specifically validated for the second generation Nissan March/Micra K11 and guarantee an exact fit.
It is important to check the correct part number as there may be different variants depending on the year of manufacture, equipment and engine, which affects the compatibility for the Nissan March K11 airbag control unit repair.