What is a Toyota Yaris XP90 airbag control unit?
The Toyota Yaris XP90 airbag control unit is the central safety unit that controls the entire occupant restraint system in the vehicle. It continuously monitors sensors, stores relevant crash data, and is responsible for the precise deployment of the airbags and seatbelt pretensioners in the event of an accident, which is crucial for the safety of the Toyota Yaris XP90.
This safety-critical electronic module coordinates all components of the airbag system. It is the primary control center that protects lives in an emergency.
The control unit is responsible for ensuring that the protective systems are activated at exactly the right moment.
Why is the Toyota Yaris XP90 airbag control unit defective?
A Toyota Yaris XP90 airbag control unit can fail because it stores crash data after an accident, preventing it from being reset, or due to internal electronic errors. Age-related wear and tear, moisture damage, or overvoltage in the electrical system can also lead to failure, necessitating repair or replacement.
The most common cause of a defect is the storage of crash data after an accident. This data prevents the error log from being erased, and the airbag warning light remains active.
Internal component defects or short circuits can also cause the control unit to fail. Such a defective control unit often requires professional repair.
Sometimes external factors such as water ingress or faulty voltage spikes can also damage the sensitive electronic system.
Common error codes for Toyota Yaris XP90 airbag control unit repair
During Toyota Yaris XP90 airbag control unit repairs, specific error codes may occur that indicate problems with the control unit itself. The most important codes signal communication problems or the storage of crash data, which require manual erasure of the error log and impair the normal function of the airbag system.
- **B1000**: Communication error → Indicates a communication fault in the airbag control unit → Can lead to a blockage of the airbag function.
- **B1100**: Crash data stored → Indicates that crash data is stored in the control unit after a collision → Prevents the error memory from being erased and the system from being released.
These error codes are crucial for correct diagnosis and repair. A precise diagnosis is the first step to a successful Toyota Yaris XP90 airbag control unit repair.
Other code-specific problems that do not directly affect the control unit (e.g. sensors) are excluded.
What part numbers are available for the Toyota Yaris XP90 airbag control unit repair?
For Toyota Yaris XP90 airbag control unit repairs, several verified OEM part numbers are relevant, identifying the exact replacement part. These numbers, often from TRW or Toyota itself, are crucial to ensuring the airbag control unit's compatibility with your vehicle and ensuring a successful repair.
Correct identification using the part number is essential for Toyota Yaris XP90 airbag control unit repair.
There are several original part numbers that are specific to the Toyota Yaris XP90 airbag control unit:
- **89170-0D440**: Originally from TRW (Autoliv), a common OEM number for Yaris XP90 control units.
- **220749-101**: An internal manufacturer number from TRW, often found in conjunction with the OEM number 89170-0D440.
- **89170-0D230**: Another common TRW part number that fits this model.
- **212986-105**: Also a TRW manufacturer number assigned to the airbag control unit of the Yaris XP90.
- **89170-0D170**: Also a TRW-manufactured part number for the XP90 airbag control unit.
- **212986-110**: Another TRW production number confirming compatibility.
- **89170-52350**: An official Toyota/OEM part number specific to the Yaris XP90 airbag control unit.
- **8917052780**: Another OEM number listed as "Airbag Diagnostic Control Module" for the Yaris.
- **898310D090**: Also a Toyota/OEM number listed on marketplaces for the Yaris XP90 airbag control unit.
These part numbers refer exclusively to the airbag control units. If the Toyota Yaris XP90 airbag control unit needs to be replaced or repaired, the part number match is crucial.
A professional repair shop can identify the correct part number and safely perform the repair or replacement.