What is a Daihatsu Mira L275 airbag control unit?
The Daihatsu Mira L275 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 crucial for a safe Daihatsu Mira L275 airbag control unit repair.
This essential component processes signals from acceleration and impact sensors, ensuring that airbags and seatbelt systems are activated precisely and promptly in an emergency.
It is responsible for the precise trigger logic and continuous system diagnostics. Correct function is essential for the passive safety of the Daihatsu Mira L275.
Why is the Daihatsu Mira L275 airbag control unit defective?
The Daihatsu Mira L275 airbag control unit is often defective because it stores crash data after an impact, requiring reprogramming. Internal memory errors, power supply issues, or a failed self-test can also impair functionality. Such failures make a professional Daihatsu Mira L275 airbag control unit repair unavoidable.
Often, the deployment of airbags or seatbelt pretensioners causes the control unit to store error messages. This is displayed as "Crash Data Stored" or "ECU error" and prevents further function.
Other causes can include overvoltage, short circuits in the electrical system, or age-related wear and tear on internal components. A precise diagnosis is crucial to resolving the problem.
Common error codes for Daihatsu Mira L275 airbag control unit repair
During a Daihatsu Mira L275 airbag control unit repair, common error codes indicate internal problems with the unit, not with sensors. Typical codes indicate communication problems, internal memory errors, power supply issues, or failed control unit self-tests, which require specific diagnostics.
- B1000 → Control unit communication error → Indicates problems with the data transmission of the airbag ECU.
- B1010 → Airbag ECU internal memory error → Indicates damage to the memory unit in the control unit.
- B1020 → Error in the microcontroller of the control unit → Indicates a malfunction of the main processor in the airbag ECU.
- B1040 → Airbag control unit voltage supply faulty → Indicates insufficient or unstable power supply to the ECU.
- B1050 → Control unit board self-test error → Means that the control unit failed its internal function check.
- B1100 → EEPROM data error in the airbag control unit → Indicates corrupted or missing calibration data in the permanent memory.
- B1200 → Internal diagnostic test failed → Indicates that the control module could not complete its own system check.
These error codes refer exclusively to the control unit itself and not to external sensors or actuators. They are crucial for accurate fault diagnosis.
These B-codes are often triggered after a crash or due to battery voltage problems. A specialized OBD airbag scan tool can read and clear these codes, which is essential for Daihatsu Mira L275 airbag control unit repair.
What part numbers are available for the Daihatsu Mira L275 airbag control unit repair?
The only 100% verified OEM part number for the Daihatsu Mira L275 airbag control unit repair is 89170-B2791 from Daihatsu. This number ensures exact compatibility. Other potential supplier numbers such as 150300-7440-93c56 are not definitively verifiable and should be avoided to prevent malfunctions.
The number 89170-B2791 is the unique Daihatsu OEM part number for this airbag control unit. It is specific to the Daihatsu Mira L275 and has been verified by specialized services.
Another number often mentioned in combination is 150300-7440-93c56. This could be a supplier or internal control unit number, but has not been independently verified.
No other confirmed OEM numbers from major manufacturers such as Bosch, Continental, or Autoliv are available. Likewise, no alternative or replacement part numbers could be verified.
For a successful Daihatsu Mira L275 airbag control unit repair and to ensure compatibility, the use of the exact OEM number 89170-B2791 is essential.