Daihatsu Boon M300 airbag control unit repair

What is a Daihatsu Boon M300 airbag control unit?

The Daihatsu Boon M300 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.

This electronic control unit (ECU) is designed for precise monitoring and control of airbag deployment. It is suitable for the Daihatsu Boon M300 and the identically constructed Daihatsu Sirion M300, built between 2004 and 2013.

The module stores important crash data and can often be repaired or recoded after a deployment to restore full functionality. A functioning unit is crucial to your vehicle's passive safety.

Why is the Daihatsu Boon M300 airbag control unit defective?

A Daihatsu Boon M300 airbag control unit often fails because it stores crash data after an accident, triggering a fault condition and preventing further function. Internal electronic errors caused by aging, voltage spikes, or moisture can also lead to failure. A repair resolves these issues and restores full system functionality.

After an accident, the control unit stores data in non-volatile memory, which often requires a reset or repair to clear the airbag warning light. Even without an accident, component aging, faulty power supplies, or corrosion can cause internal damage.

A failure of the airbag control unit impairs the entire safety function and must be remedied immediately. A professional diagnosis at a workshop is essential to determine the cause and repair the unit.

Common error codes for Daihatsu Boon M300 airbag control unit repair

During a Daihatsu Boon M300 airbag control unit repair, specific error codes may occur that indicate problems with the SRS unit or its power supply. These codes enable a precise diagnosis of the defect and are crucial for restoring airbag function. This ensures full safety and clears the warning light.

• B107E → Airbag module (SRS unit) error → Indicates an internal module defect or a communication problem.
• B207F → SRS control unit error → Indicates an internal error within the control unit itself.
• B1015 → Faulty control unit module → Indicates a serious internal defect of the airbag ECU.
• B1139 → Error within the SRS system → A general system error that is often traced back to the control module.
• B0091 → Control Module Issues → A general malfunction or internal defect of the control module.
• 11 → Power supply error or airbag circuit RH short circuit → Problem with the power supply to the ECU or a specific airbag circuit.
• 15 → SRS control unit power supply error → Undervoltage or overvoltage on the control unit can trigger this error.
• 16 → Airbag warning light or circuit fault → Defect in the control of the warning light or its circuit.
• 21 → Driver airbag or airbag circuit error (open circuit) → An open circuit in the driver airbag circuit is detected by the ECU.
• 31 → Right side airbag control unit error or driver's side cable defective → Problem with the side airbag control circuit or the wiring on the driver's side.

What part numbers are available for the Daihatsu Boon M300 airbag control unit repair?

For the Daihatsu Boon M300 airbag control unit repair, there is currently no 100% verified OEM part number directly associated with the M300 model's control unit. A referenced number such as 89170-B1180 only refers to a generic airbag module and cannot be clearly assigned to the airbag control unit or the M300 model.

Well-known suppliers such as Autoliv, Bosch, Continental, and Siemens do not list specific OEM part numbers for the Daihatsu Boon M300 airbag control unit in publicly accessible catalogs. A direct inquiry to Daihatsu service or the use of professional, paid parts databases is recommended for verified identification.

Despite the lack of unique OEM part numbers, the Daihatsu Boon M300 airbag control unit can be repaired. Specialized workshops can identify the units using the vehicle identification number (VIN) and the module's internal identifier and perform appropriate repairs to resolve the failure.