Airbag Control Module
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B1000: Airbag ECU Malfunction
- Indicates a fault within the airbag control module itself.
- MyAirbags can reset and repair the airbag control module, restoring it to factory condition.
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B1100: Airbag ECU Defective
- Internal malfunction detected in the airbag control module.
- MyAirbags can reset and repair the airbag control module, resolving internal defects.
Airbags (Driver and Passenger)
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B1801/B1811: Driver Airbag Squib Circuit Open/Short
- Open or short circuit detected in the driver's airbag inflator circuit.
- Note: Airbag inflators themselves cannot be repaired and must be replaced.
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B1805/B1815: Passenger Airbag Squib Circuit Open/Short
- Open or short circuit detected in the passenger's airbag inflator circuit.
- Note: Airbag inflators themselves cannot be repaired and must be replaced.
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B1821/B1826: Side Airbag (Driver) Squib Circuit Open/Short
- Open or short circuit in the driver's side airbag wiring.
- Note: Side airbag inflators cannot be repaired and must be replaced.
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B1831/B1836: Side Airbag (Passenger) Squib Circuit Open/Short
- Open or short circuit in the passenger's side airbag wiring.
- Note: Side airbag inflators cannot be repaired and must be replaced.
Seat Belts and Pretensioners
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B1900/B1901: Driver Seat Belt Pretensioner Circuit Open/Short
- Open or short circuit in the driver's seat belt pretensioner wiring.
- MyAirbags can rebuild and repair seat belt pretensioners, restoring them to working condition.
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B1905/B1906: Passenger Seat Belt Pretensioner Circuit Open/Short
- Open or short circuit in the passenger's seat belt pretensioner wiring.
- MyAirbags can rebuild and repair seat belt pretensioners, resolving electrical issues.
Impact Sensors
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B1610/B1615: Front Airbag Sensor (Driver) Malfunction
- Faulty signal from the driver's front impact sensor.
- Note: Impact sensors typically need to be replaced; repair is not recommended.
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B1620/B1625: Front Airbag Sensor (Passenger) Malfunction
- Faulty signal from the passenger's front impact sensor.
- Note: Impact sensors typically need to be replaced; repair is not recommended.
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B1630/B1635: Side Airbag Sensor (Driver) Malfunction
- Faulty signal from the driver's side impact sensor.
- Note: Impact sensors typically need to be replaced; repair is not recommended.
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B1640/B1645: Side Airbag Sensor (Passenger) Malfunction
- Faulty signal from the passenger's side impact sensor.
- Note: Impact sensors typically need to be replaced; repair is not recommended.
Collapsible Steering Column
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B1810: Steering Pad Switch Circuit Malfunction
- Issues with the steering wheel's airbag wiring or connections.
- Note: May require replacement or professional repair; consult a specialist.
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B1812: Steering Column Assembly Malfunction
- Malfunction in the steering column's collapse mechanism or related sensors.
- Note: May require replacement or professional repair; consult a specialist.
Pyro Fuses
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B1690: Battery Voltage Low/Open in All Battery Lines
- Open circuit in the pyro fuse (battery disconnect unit) wiring.
- MyAirbags can repair or replace pyro fuses (battery fuses), restoring proper circuit function.
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B1695: Short in All Battery Lines
- Short circuit to ground in the pyro fuse circuit.
- MyAirbags can repair or replace pyro fuses, resolving electrical issues.
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B1697: Malfunction in Battery Voltage Retention Function
- Fault indicating the pyro fuse has been activated or is faulty.
- MyAirbags can service pyro fuses, replacing or resetting them as needed.
Additional Codes Commonly Encountered
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B1780: Occupant Classification System Malfunction
- Issues with the system that detects passenger presence and weight.
- Note: May require sensor calibration or replacement; consult a specialist.
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B1795: Occupant Classification System Communication Error
- Communication failure between the occupant detection system and the airbag control module.
- Note: May require professional diagnostics; consult a specialist.
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U0151: Lost Communication with Airbag Control Module
- Communication failure between the airbag control module and other vehicle systems.
- MyAirbags can repair or reset the airbag control module to restore communication.
Notes for Troubleshooting
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Open Circuit: Indicates a break in the electrical pathway, often due to disconnected connectors, broken wires, or failed components.
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Short to Ground: The electrical circuit is unintentionally connected to the ground, often due to damaged insulation or wiring contacting metal parts.
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Component Malfunction: The sensor or module itself may be faulty and require replacement or repair.
Recommendations for Salvage Rebuilders
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Visual Inspection: Start with checking all connectors, wiring harnesses, and components for physical damage.
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Use Professional Repair Services: For faulty modules and seat belts, consider using MyAirbags to repair or reset components, ensuring they meet safety standards.
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Reset Procedures: After repairs, use a compatible scan tool to clear codes and reset the SRS system.
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Refer to Service Manuals: Always consult the specific Toyota service manual for the vehicle's year and model for detailed diagnostics and repair procedures.
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Safety Precautions: Disconnect the battery and wait at least 3 minutes before working on SRS components to prevent accidental deployment.
Disclaimer: The codes listed above are generalized and may vary depending on the specific model and year of the Toyota vehicle. For precise diagnostics, always refer to the manufacturer's service information or use a professional-grade diagnostic scanner. MyAirbags can help repair and reset specific SRS components, but always ensure that repairs are performed by qualified professionals to maintain vehicle safety.