What is a Honda Fit 2nd Gen airbag control unit?
The Honda Fit 2nd Gen airbag control unit is the central safety unit that activates all occupant restraint systems in the event of an accident. It continuously monitors sensors, stores relevant crash data, and ensures the proper functioning of all airbag modules in the vehicle to ensure maximum occupant safety.
This diagnostic and control module continuously monitors the status of the various airbag sensors and all system components. In the event of an impact, it receives signals from crash sensors strategically placed throughout the vehicle and immediately evaluates them.
The device then sends electrical trigger signals to the corresponding airbag inflators, which activate the airbags within milliseconds. The module contains an onboard microprocessor unit for system diagnostics and is programmed for the vehicle identification number (VIN).
Typically, the airbag control unit in the second-generation Honda Fit is installed in the center console, often below the parking brake lever. It is connected to the driver, passenger, and side airbag modules via a wiring harness, ensuring reliable signal transmission.
Why is the Honda Fit 2nd Gen airbag control unit defective?
The Honda Fit 2nd Gen airbag control module can fail due to internal hardware or software errors, power surges, short circuits, or a collision that has damaged the module. These problems often result in a permanently illuminated airbag warning light and prevent the safety system from functioning properly.
Airbag control unit failure often occurs after an accident, as it permanently stores crash data that must be erased. Even without a collision, internal faults such as faulty solder joints or aging components can lead to failure. These internal faults may necessitate a Honda Fit 2nd Gen airbag control unit repair.
Sometimes the defect is due to a faulty power supply or a short circuit within the module itself. Such electrical problems prevent proper communication with other vehicle systems and trigger specific error codes. A careful diagnosis is essential if the control unit is defective.
Common error codes for Honda Fit 2nd Gen airbag control unit repair
During Honda Fit 2nd Gen airbag control module repairs, specific error codes often occur, indicating internal defects or communication problems within the module. These codes signal that the safety system is not fully functional and requires immediate diagnosis and repair.
- **B1000** → Control unit communication error → Indicates problems with the data transmission of the airbag control unit.
- **B0871** → Internal SRS control unit error → Indicates an internal defect in the airbag safety module.
- **B0911** → Internal hardware error airbag control unit → Indicates a specific failure of hardware components in the control unit.
- **B0921** → Short circuit in the airbag control unit → Signals an undesired current path within the module.
- **B0922** → Open circuit / high resistance in the control unit → Indicates a break in the circuit or too high resistance in the airbag module.
- **B0941** → Loss of communication with the control unit → Means that the main control unit cannot communicate with the airbag module.
- **87-31** → Internal SRS Module Error → A manufacturer-specific code for internal problems with the airbag control unit.
- **91-1** → Internal error in the SRS control unit (power supply) → Indicates a defect in the internal power supply of the airbag control unit.
- **9-2** → Internal Power Supply Error (Honda Fit Specific) → A Honda specific code for power supply problems with the airbag control module in the Fit.
What part numbers are available for the Honda Fit 2nd Gen airbag control unit repair?
For the Honda Fit 2nd Gen airbag control unit repair, three specific OEM part numbers are primarily verified by Honda: 77960-TK6-A01, 77960-TK6-A02, and 77960-T5AA212M1. These numbers ensure the correct compatibility and functionality of the central security system in your vehicle.
It is crucial that the part number of the replacement module exactly matches that of the defective control unit to ensure the safety and functionality of the airbag system. Without an exact match, the Honda Fit 2nd Gen airbag control unit repair may fail or even be dangerous.
A search of official parts catalogs revealed that no other third-party OEM part numbers, such as Bosch or Continental, could be verified for this specific model and function. Therefore, focus exclusively on the Honda-verified numbers when repairing or replacing the airbag control unit.
- **77960-TK6-A01** → Honda → Original OEM part number for the airbag control module of the Honda Fit 2nd Gen.
- **77960-TK6-A02** → Honda → Another genuine OEM part number compatible with the Honda Fit 2nd Gen Airbag Control Module.
- **77960-T5AA212M1** → Honda → Genuine OEM replacement module, usually requires reprogramming to the vehicle VIN.
Whenever the airbag control unit is replaced, it must be professionally reprogrammed to the vehicle identification number (VIN) by a specialized workshop. This ensures that the module communicates correctly with the other vehicle systems and that all safety functions are activated.
A repaired or used module offers a cost-effective alternative to buying a new one, but should always be purchased with a warranty and proven functional testing. Always focus on quality and expertise when repairing your Honda Fit 2nd Gen airbag control unit.