What is a Daihatsu Charade G11 airbag control unit?
The Daihatsu Charade G11 airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It continuously monitors sensors, stores relevant crash data, and ensures the proper functioning of all airbag modules in the vehicle. This critical component is essential for occupant safety and controls deployment in milliseconds.
It processes signals from acceleration and impact sensors to respond quickly in an emergency. The unit is connected to the vehicle via a diagnostic interface to detect faults.
The control unit is typically powered by 12 V from the vehicle's electrical system. Its main task is the continuous monitoring of the entire airbag system in the Daihatsu Charade G11.
Why is the Daihatsu Charade G11 airbag control unit defective?
The Daihatsu Charade G11 airbag control unit can fail due to internal electronic components wearing out over time or being damaged by overvoltage. It often fails after an accident because it permanently stores crash data. This requires reprogramming or resetting the unit for safe operation and troubleshooting.
A common cause of failure is the storage of a crash event (error code B1193 or B1499). This prevents the system from functioning again and signals the need for repair.
Internal errors in the SRS control unit (e.g., B1620, B1670, or 65535) indicate hardware or firmware defects. Such failures can impair the functionality of the entire airbag safety system.
Communication errors (B1000) or problems with the diagnostic sensor unit (B1239) can also cause malfunctions. A professional diagnostic at a workshop is essential to determine the exact cause and repair the airbag control unit.
Common error codes for Daihatsu Charade G11 airbag control unit repair
During Daihatsu Charade G11 airbag control unit repairs, specific error codes may occur that signal internal defects or accident triggers. These B-codes identify problems directly within the control unit, such as communication errors, crash events, or internal system malfunctions, and are crucial for accurate diagnosis of the airbag system.
- B1000 → Airbag ECU communication error → Internal defect or communication problem with the control unit.
- B1193 → Crash Event Storage → The control unit has stored an accident event and requires a reset.
- B1499 → Airbag ECU detects deployed airbag → The system reports the deployment of an airbag.
- B1620 / B1670 → SRS control unit internal error → Critical hardware or software problems in the control unit.
- B1231 → Event Threshold Exceeded → The trigger threshold has been exceeded, often after an accident.
- B1239 → Diagnostic sensor unit error → Malfunction of the central sensor system of the airbag control unit.
- 65535 → Internal memory error → Problems with the internal EEPROM of the control unit, often intermittent.
What part numbers are available for the Daihatsu Charade G11 airbag control unit repair?
For the Daihatsu Charade G11 airbag control unit repair, the only confirmed and exact OEM part number is 89170-B1190. This number is confirmed for both genuine Daihatsu parts and quality-tested replacement parts from reputable suppliers such as Febi Bilstein. Other numbers could not be assigned to the model with sufficient certainty.
Part number 89170-B1190 is directly associated with the airbag control unit of the Daihatsu Charade G11. It has been confirmed as compatible and verifiable by various sources.
Febi Bilstein offers this part number as a high-quality replacement part, improving availability for repairing the defective airbag control unit. Always pay attention to this exact number when purchasing.
No other alternative OEM part numbers from major suppliers such as Bosch, Continental, or Autoliv could be found specifically for this model and component. This underscores the relevance of 89170-B1190 for correct diagnosis and repair.