Airbag control unit with part number 77960-SAA-E812-M1

What is the function of Airbag Control Unit 77960-SAA-E812-M1?

The airbag control unit with part number 77960-SAA-E812-M1 is the central control module for the occupant protection system in the Honda Jazz GD (model years 2001–2008). As an original Honda OEM part, also known under the Siemens part number 5WK43461, it processes signals from crash sensors and deploys airbags and seatbelt pretensioners in the event of a collision.

This component continuously monitors all connected sensors and actuators of the restraint system. It checks their functionality at every vehicle start-up and ensures that all systems respond correctly in an emergency. The unit is precisely tailored to the Honda Jazz’s vehicle architecture to guarantee reliable deployment.

Why does control unit 77960-SAA-E812-M1 fail?

The most common causes of failure for control unit 77960-SAA-E812-M1 are stored crash data after an accident, internal hardware defects leading to total failure, or blocked communication with diagnostic tools. These issues typically stem from electronic components inside the unit and require professional repair.

One of the primary reasons for necessary servicing is the storage of crash data. After a collision, the control unit locks itself for safety reasons and must be professionally reset to restore full functionality of the airbag system. In such cases, replacement is often unnecessary.

In addition, internal faults may occur on the circuit board. Defective electronic components or faulty solder joints can prevent the unit from processing signals or communicating with the vehicle. In these situations, targeted component-level repair is the most cost-effective solution.

How do you recognize a defect in 77960-SAA-E812-M1?

A defective airbag control unit of type 77960-SAA-E812-M1 primarily manifests as a permanently illuminated airbag warning light (SRS lamp) in the instrument cluster. Often, the control unit can no longer be accessed via diagnostic tools (communication error), or fault codes indicating an internal malfunction are stored.

The clearest symptom is the persistently lit SRS warning light. It does not turn off after starting the engine, signaling that the safety system is inoperable and a critical fault exists.

Another frequent sign is lack of communication. When attempting to read the fault memory using an OBD diagnostic tool, the workshop cannot establish a connection to the airbag control unit. The unit no longer responds to requests, pointing to a severe internal defect.

Before proceeding with repairs, a professional diagnosis at a workshop is essential. Only then can it be confirmed whether the issue truly lies with the control unit itself, rather than an external sensor or wiring problem.

In which vehicles is control unit 77960-SAA-E812-M1 installed?

The airbag control unit with part number 77960-SAA-E812-M1 was specifically developed for Honda models. It is predominantly used in the Honda Jazz GD series. At Airbag24, this control unit is professionally refurbished for the models listed below.

At Airbag24, we repair part number 77960-SAA-E812-M1 for the following model:

Honda Jazz GD (model years 2001–2008)

How does the repair process work at Airbag24?

The repair process at Airbag24 is designed for swift and reliable handling. After removal, the defective control unit is sent along with the fault report. Our technicians perform a precise analysis and repair, including clearing crash data, and return the tested unit ready for installation. We provide 2 years' statutory liability for defects on every repair.

First, the defective control unit is removed from the vehicle at a specialized workshop, usually beneath the center console. Then, carefully pack the unit and include the completed repair form—ideally accompanied by the diagnostic report.

Upon receipt at Airbag24, our experienced technicians analyze the defect and resolve it at the electronic level. This includes resetting crash data and replacing any faulty components. Drawing on expertise gained from over 20,000 repairs, we restore full functionality.

Finally, each repaired control unit undergoes a comprehensive functional test. Once successfully verified, it is promptly returned to you. Installation is typically straightforward (plug-and-play), and the airbag warning light should extinguish after installation.