What is a Honda Legend 2nd Gen airbag control unit?
The Honda Legend 2nd Gen airbag control unit is the central electronic control unit (ECU) for the occupant protection system. It monitors all safety-relevant sensors, interprets crash data, and deploys the airbags and seatbelt pretensioners when necessary to protect occupants. It is crucial for the vehicle's passive safety.
This ECU, also known as the SRS (Supplemental Restraint System) Control Unit, is found in 2nd generation Honda Legend models (KA8/KA9), typically built between 1990 and 2005. Its primary role is to ensure occupant safety by managing the entire airbag system.
It contains special capacitors that store energy to reliably deploy the airbags even if the vehicle's battery is disconnected during a collision. This robust design is critical for consistent safety performance and minimizes the risk of failure.
Why is the Honda Legend 2nd Gen airbag control unit defective?
A Honda Legend 2nd Gen airbag control unit is often defective because irreversible crash data was stored after an accident, preventing reuse, or it has internal communication errors. These defects prevent the error memory from being erased and require a professional Honda Legend 2nd Gen airbag control unit repair.
If crash data is stored in the control unit, it completely blocks the function of the airbag system. This causes the airbags to no longer deploy properly, and the warning light remains permanently illuminated. This is the most common reason for a necessary repair.
Other causes of failure may include internal electronic faults or a communication error (e.g., B1000). Such defects must be diagnosed and repaired by a specialist workshop, often through a specialized repair of the control unit to avoid replacement.
Common error codes for Honda Legend 2nd Gen airbag control unit repair
When repairing a Honda Legend 2nd Gen airbag control unit, the most common error codes are related to internal problems or accident history. These primarily involve stored crash data and communication errors that limit functionality or block the system.
- B1000 → Control unit communication error → Cause: Internal fault in the ECU or a problem in the data connection to the vehicle.
- Crash data saved → Memory blocked by accident history → Cause: An impact event was detected and irreversibly stored in the non-volatile memory of the control unit.
These specific error codes often prevent the error log from being erased, even after the cause has been corrected. A complete diagnosis requires specialized scanners that have access to Honda's internal data to precisely pinpoint the failure.
Correcting these errors is crucial to restoring safety. A professional Honda Legend 2nd Gen airbag control unit repair can clear these codes and restore the unit to full functionality, ensuring your vehicle's safety.
What part numbers are available for the Honda Legend 2nd Gen airbag control unit repair?
For Honda Legend 2nd Gen airbag control module repair, the primary verified OEM part number is 77920-SJAE13M3, which comes directly from the manufacturer. This number is critical for accurate identification and ensuring the airbag control module's compatibility with your Honda Legend.
The OEM part number 77920-SJAE13M3 is specifically validated and verified for the airbag control unit of the 2nd generation Honda Legend (KA8, KB1). This number is confirmed as genuine and compatible by specialized repair services, providing peace of mind during replacement.
Another base OEM part number, 77920-SJAE13M, is also listed in official Honda parts catalogs for this model series. Currently, no other explicitly confirmed supplier or spare part numbers for this specific control unit are publicly available or validated.
Using the correct part number is essential to ensure the replacement or repair part is an exact fit for your vehicle and fully functional. This prevents malfunctions and ensures a successful Honda Legend 2nd Gen airbag control unit repair and long-term reliability.