What is a Toyota Yaris Hatchback airbag control unit?
The Toyota Yaris Hatchback airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It precisely monitors signals from crash sensors, stores relevant crash data, and ensures the immediate and proper operation of all airbag modules and seatbelt pretensioners to provide maximum occupant protection.
This intelligent control unit, often called the airbag ECU, is the control center of the passive safety system in your Toyota Yaris. It continuously processes signals from various crash sensors installed in the vehicle.
In the event of a collision, the control unit instantly decides which airbags and seatbelt pretensioners need to be deployed. This is done in a tailored manner to optimally protect the occupants from injury.
The device is compatible with various generations of the Toyota Yaris Hatchback, including P1 (1999-2005), P9 (2005-2011) and P13 (2011-2020), and adapts to the respective safety components.
Why is the Toyota Yaris Hatchback airbag control unit defective?
A Toyota Yaris Hatchback airbag control unit can fail, often after an accident, as it stores crash data and activates the airbag warning light. Internal malfunctions such as memory errors or software corruption can also lead to system failure. A precise diagnosis at the workshop is crucial to resolving the problem.
The most common reason for failure is the storage of crash data after an accident, which prevents additional airbags from deploying. The airbag warning light then remains permanently illuminated, even if there is no visible damage.
Internal defects in the control unit itself, such as a short circuit or power supply problems, can also lead to failure. These malfunctions are reported via specific error codes.
Incorrect battery voltage or improper work on the vehicle's electrical system can also damage the control unit and require replacement or professional repair.
Common error codes for Toyota Yaris Hatchback airbag control unit repair
Common error codes are crucial for accurate diagnostics during Toyota Yaris Hatchback airbag control unit repairs, as they pinpoint specific problems within the control unit itself. They help technicians identify internal defects or communication failures and take targeted measures to restore system functionality and ensure safety.
- **B1000** → Control unit communication error → Error in the communication between the control unit and the diagnostic device or other control units.
- **B1100** → SRS control unit - malfunction → Internal defect or logical malfunction in the airbag control unit itself.
- **B0118** → Control unit internal error → Error in the control unit memory or in the control of the airbag warning light.
- **B0108** → Passenger airbag ignition circuit Short circuit to permanent plus (B+) in the circuit → Wiring problem or defect in the ignition circuit of the passenger airbag, detected by the control unit.
- **B0113** → Ignition circuit of the front right side airbag (VR) → Error in the ignition circuit of the front right side airbag, also reported by the control unit.
What part numbers are available for the Toyota Yaris Hatchback airbag control unit repair?
Correct identification of part numbers is essential for a successful Toyota Yaris Hatchback airbag control unit repair to ensure compatibility and functionality. Only specific OEM numbers guarantee that the replacement part or repair fits the vehicle model and its equipment, ensuring the airbag system functions properly again.
Specific OEM part numbers for the airbag control unit have been verified for the Toyota Yaris Hatchback. These numbers guarantee compatibility with your vehicle model.
It is important to note that numbers for other components such as sensors or passenger detection systems do not belong to the actual airbag control units and must therefore be excluded.
These original part numbers are crucial to ensure proper function of the airbag system after repair or replacement and to maintain safety.
| Part number | Manufacturer | type |
|---|---|---|
| 89170-0D020 | Toyota | Original |
| 89170-52B90 | Toyota | Original |
| 89170-52780 | Toyota | Original |