What is a Toyota Prius c airbag control unit?
The Toyota Prius c airbag control unit is the central safety unit in the vehicle, which specifically activates the occupant restraint systems, such as airbags and seatbelt pretensioners, after an accident. It continuously monitors various impact sensors and stores important crash data to ensure a quick and safe response from the Supplemental Restraint System (SRS). This module is crucial for the functionality of the entire airbag safety system in the Toyota Prius c.
The airbag control unit, also known as the SRS control module, acts as the brain of the passive safety system. It evaluates signals from front and side impact sensors in real time to determine the severity and direction of an impact.
When a critical event is detected, it precisely triggers the appropriate airbags and seatbelt pretensioners. A professional Toyota Prius c airbag control unit repair is essential for proper function after an accident or in the event of a malfunction.
Why is the Toyota Prius c airbag control unit defective?
A Toyota Prius c airbag control unit can fail for a variety of reasons, often after an accident, as it permanently stores crash data that requires a reset. Internal electronic faults or power supply issues can also cause failure. A malfunction is usually indicated by a permanently illuminated airbag warning light in the dashboard and requires a professional Toyota Prius c airbag control unit repair to restore safety.
After a crash, critical data is irretrievably stored in the control unit, necessitating reprogramming or replacing the module. Even without an accident, a defect can occur due to aging components or overvoltage, leading to a sudden failure.
Communication problems with other control units in the vehicle via the CAN bus can also cause the airbag control unit to malfunction. A precise diagnosis is essential to identify the cause of the problem and repair the airbag control unit.
Common error codes for Toyota Prius c airbag control unit repair
During a Toyota Prius C airbag control unit repair, specific error codes often occur that directly indicate problems with the module itself. These range from internal system errors to communication problems with other vital vehicle components, requiring precise diagnosis. Knowledge of these error codes is crucial for precisely troubleshooting the failure and restoring vehicle safety.
- B1000 → Control unit communication error → Internal electronics error or problem with data transmission.
- B1100 → Control Unit Internal Error → Hardware or software defect within the airbag control unit.
- B1871 → Airbag control unit signal error → Stored crash data or VIN mismatch blocks functionality.
- P3107-213 → Lost communication with airbag system control module (GND short circuit) → Short circuit in the communication circuit between the airbag ECU and the HV Control ECU.
- P3107-214 → Lost communication with airbag system control module (Open/+B short circuit) → Open or short circuit in the communication circuit to the HV Control ECU.
- P3107-215 → Lost communication with airbag system control module (Abnormal signals) → Inconsistent or erroneous communication signals between the airbag ECU and the HV Control ECU.
What part numbers are available for the Toyota Prius c airbag control unit repair?
For Toyota Prius C airbag control unit repairs, two original OEM part numbers are primarily relevant to ensure 100% compatibility. These specific numbers must exactly match the installed module, as even minor deviations can lead to malfunctions or incompatibility. Verifying the part number on the old control unit is essential for a successful repair or replacement, especially since reprogramming to the vehicle identification number (VIN) is often required.
The verified OEM part numbers for the Toyota Prius c airbag control unit are:
- 89170-47030
- 89170-52J70
These modules are programmed at the factory to the vehicle's VIN. Therefore, after a replacement or repair, a reset or reprogramming by a specialist workshop or the manufacturer is usually necessary.
No other 100% verified alternative OEM or supplier numbers for the exact Toyota Prius c airbag control unit could be found. For repair or replacement, always check the part number of the defective module to ensure the correct replacement part is ordered.