What is a Honda Fit 4th Gen airbag control unit?
The Honda Fit 4th Gen airbag control unit is the central safety unit that activates all occupant restraint systems in the event of a crash. It precisely monitors sensors, stores relevant crash data, and ensures the proper functioning of all airbag modules in the vehicle, which is crucial for your safety.
The module serves as the electronic diagnostic and control center for the entire Supplementary Restraint System (SRS). It continuously evaluates signals from acceleration sensors.
In the event of a collision, the control unit analyzes the impact data in real time and initiates the targeted deployment of the appropriate airbags and belt pretensioners to maximize occupant protection.
It is precisely tailored to the safety systems of the 4th generation Honda Fit (model years approximately 2009–2017) and communicates with other vehicle systems via the CAN bus.
Why is the Honda Fit 4th Gen airbag control unit defective?
A Honda Fit 4th Gen airbag control unit often fails due to an accident, power surges, water damage, or internal electronic failures that require repair or replacement. An incorrect power supply can also cause failure, activating the airbag warning light.
After an accident, the control unit stores crash data that requires a reset. Repairing the Honda Fit 4th Gen airbag control unit is essential in this case.
Internal component failures, often caused by aging or voltage spikes, can also lead to malfunctions. This manifests itself as a permanently illuminated SRS warning light in the dashboard.
Another common problem is moisture ingress, which damages the sensitive electronics of the airbag control unit. This impairs the module's diagnostic capabilities and safety functions.
Common error codes for Honda Fit 4th Gen airbag control unit repair
The most common error codes in Honda Fit 4th Gen airbag control unit repairs indicate internal defects, communication issues, or inconsistent software data. These codes relate directly to the airbag ECU and often require specialized diagnostics for accurate problem identification and efficient resolution.
- B1000 → Control unit communication error → Typical for faulty data line or internal defect of the airbag control unit.
- 6-4 → SRS control module internal error → Indicates problems with the battery voltage or the module's internal power supply.
- 87-31 → Internal SRS Unit Error → Indicates a general malfunction of the internal electronics of the airbag control unit.
- 91-1x → Internal error in the SRS control unit → A collective code for various internal problems within the ECU.
- 9-2 → Internal fault in the power supply of the airbag control unit → Specific problem with the internal voltage regulation of the control unit.
- 85-63 / 85-64 → Model ID code or serial ID code inconsistent → Problems initializing or programming the control unit after replacement.
- 85-71 / 85-78 / 85-79 → OPDS unit not initialized / OPDS drift check error → Defects in the occupancy detection system (OPDS), which is integrated into the airbag control unit.
- 91-2x → Short circuit in the SRS indicator circuit → Affects the control of the warning light or its wiring within the control unit.
What part numbers are available for the Honda Fit 4th Gen airbag control unit repair?
For Honda Fit 4th Gen airbag control unit repairs, specific OEM part numbers are relevant to ensure 100% compatibility. These original part numbers are essential for identifying the correct replacement or repair module for your vehicle and restoring full functionality of the airbag system.
It is crucial to use the correct part number for your Honda Fit model year (approximately 2009-2017) during repair. This ensures that the module works perfectly with the vehicle's systems.
- 77960-T5A-A212M1 → Honda Genuine Airbag Control Unit (SRS Control Module) for Honda Fit model years 2015-2017.
- 77960-TK6-A040M1 → Honda Genuine Airbag Control Unit (SRS Control Module) for Honda Fit built in 2012-2013.
- 77960-TX9-A01 → Honda Genuine Airbag Control Module (SRS Control Module) specifically for the Honda Fit EV model.
No verified third-party OEM part numbers such as Bosch, Continental, or Siemens for the Honda Fit 4th Gen Airbag Control Unit were found that are directly listed as genuine parts.
The module numbers listed here are intended exclusively for the airbag control unit itself and not for sensors or airbag modules such as driver or passenger airbags.