What is a Daihatsu Mira LA350 airbag control unit?
The Daihatsu Mira LA350 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, essential for the passive safety of the driver and passengers.
This module, also known as the SRS control unit, is the brain of the airbag system. It is responsible for reacting to an impact within milliseconds and triggering the safety devices in a targeted manner.
Why is the Daihatsu Mira LA350 airbag control unit defective?
A Daihatsu Mira LA350 airbag control unit often fails because it stores crash data after an accident or has internal electronic faults. Communication problems with other vehicle systems or damaged wiring can also lead to failure, activating the airbag warning light and necessitating repair.
The most common cause of a defective state is the storage of crash data after an accident. The module then blocks the function for safety reasons and must be reset.
Internal errors in the control unit can be caused by aging, voltage spikes, or manufacturing defects. These lead to a general failure of the airbag system and require comprehensive diagnostics.
Problems with wiring or connectors are also a common cause. A loose connection can disrupt communication and cause system failure.
Common error codes for Daihatsu Mira LA350 airbag control unit repair
During Daihatsu Mira LA350 airbag control unit repairs, generic error codes like B1000 often occur, indicating communication problems or internal control unit errors. Messages like "Crash Data Stored" after an accident are also common, as the module permanently stores this information and requires a reset.
Specific, exclusive error codes for this particular Daihatsu Mira LA350 airbag control unit are not publicly documented in detail. This **repair** focuses on correcting the common causes of the error.
- B1000 → Control unit communication error → Problems in data transmission or internal module malfunction.
- Crash Data Stored → Stored impact data → The module has detected an accident and is locked.
- Communication Error → Communication error → Connection problems to other systems or sensors.
- ECU Error → Internal control unit error → A problem with the module's internal electronics.
What part numbers are available for the Daihatsu Mira LA350 airbag control unit repair?
For Daihatsu Mira LA350 airbag control unit repairs, the OEM part numbers 89170-B2791 and 150300-7440-93C56 are primarily relevant. These numbers are directly linked to the original manufacturer and are crucial for correctly identifying the airbag module installed in your Daihatsu Mira.
The number 89170-B2791 is the most common OEM part number used for the airbag module in the Daihatsu Mira LA350. It uniquely identifies the original part.
The number 150300-7440-93C56 serves as a supplemental part identifier or programming ID. Both numbers confirm compatibility with the airbag control unit of the Daihatsu Mira LA350 and are important for a correct repair.
There are no confirmed alternative or spare part numbers from known suppliers such as Bosch, Continental, or Siemens specifically for this control unit. Therefore, the OEM numbers should be considered primarily for repairs.
Technical specifications and features of the Daihatsu Mira LA350 airbag control unit
The Daihatsu Mira LA350 airbag control unit continuously monitors sensors to precisely deploy the airbags in the event of a collision and ensure occupant safety. It stores important crash data in the EEPROM (type 93c56). A professional reset is possible after an accident, providing a cost-effective and effective airbag module repair.
The control unit contains a 93c56 EEPROM memory with approximately 256 bytes of storage space. All relevant system and crash data is stored here.
Its main function is to monitor the impact sensors and the airbag deployment. It also detects system errors and activates the airbag warning light in the dashboard.
An important feature is the ability to reset the control unit. This deletes stored crash data and restores the module to operational status. This often avoids the costly replacement of a fully functional module.
Compatible models and years for the Daihatsu Mira LA350 airbag control unit repair
The Daihatsu Mira LA350 airbag control unit is primarily compatible with the Daihatsu Mira model of the LA350 series. It was used in vehicles built from approximately 2014 to 2020. Correct identification of the specific vehicle model is essential for a successful repair.
Compatibility is closely tied to the Daihatsu Mira LA350 model. A careful check of the part number is always advisable to ensure a perfect fit for your repair.
The control unit works closely with other safety systems such as seat belt pretensioners. Model variants may have slight differences in the firmware.
Installation position and special features of the Daihatsu Mira LA350 airbag control unit
The Daihatsu Mira LA350 airbag control unit is typically installed centrally in the vehicle interior, often under the dashboard or seat. A special feature is the online repair and reset function, which allows for the deletion of crash data. This represents a cost-effective alternative to replacing the entire module.
The central installation position ensures short and efficient wiring routes to all airbag components and sensors. The exact location can be found in the vehicle's service documentation.
The connections include power supplies, signal lines to acceleration and impact sensors, and control lines to the airbags. Proper installation is essential for functional reliability.
The ability to perform a professional reset is what sets this module apart. This allows a broken or defective airbag control unit to often be repaired without the need for an expensive new one from a workshop.