Airbag control unit with part number 77960-SNA-H822-M1

What does the airbag control unit 77960-SNA-H822-M1 do?

The airbag control unit 77960-SNA-H822-M1 is responsible for the SRS restraint system of Honda. It reads the signals from the crash sensors, decides within milliseconds in an accident on triggering airbags and seatbelt pretensioners, and monitors the system continuously. It shows faults via the airbag warning light.

This evaluation runs during operation so that the system can react in an emergency.

After an accident the unit stores crash data and then locks itself.

Why does the control unit 77960-SNA-H822-M1 fail?

Stored crash data after an accident are the most common cause, even if no airbag has triggered; an ordinary diagnostic tool cannot erase them. Further causes include aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or a jump start.

Airbag24 erases the crash data as part of the repair. The other causes act on solder joints and contacts over time.

How can you tell that the 77960-SNA-H822-M1 is defective?

An airbag warning light in the instrument cluster that lights up permanently or intermittently indicates a defect. Fault messages in the instrument cluster, no connection to the diagnostic tool, and a fault memory that cannot be cleared are also signs. In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

In this case a prompt check is advisable, even if the car seems normal in everyday use.

Which vehicles is the 77960-SNA-H822-M1 fitted in?

The control unit 77960-SNA-H822-M1 is used in Honda, specifically in the following vehicles: Honda Civic 8th generation (2005-2011).

The overview shows the vehicles stored for this part number.

• Honda Civic 8th generation (2005-2011)

Comparing the part number on the label with this page only shows that the unit is correctly assigned. Whether the control unit itself is defective, or whether a cable or plug is the cause, is established solely by a fault memory read out beforehand.

For the same vehicles, we also repair control units with the part numbers 77960-SMG-G014-M1, 77960-SMG-G021-M1, 77960-SMG-G120-M1, 77960-SNA-L220-M1, 77960-SNA-L230-M1, 77960-SNA-M410-M1.

How does the repair of the 77960-SNA-H822-M1 work?

First have the fault memory read out and enclose the log, then disconnect the battery and only then remove the control unit. Checking, repair and function test at Airbag24 usually take 3–4 working days.

Then create a repair order online and send in the well-packed unit. Airbag24 then checks it, repairs defective components, erases stored crash data and tests the function. Your own unit then comes back. Our repairs come with 2 years' statutory liability for defects. The repaired control unit comes back with all vehicle data and is ready for use as soon as it is refitted — no coding or programming is required.

How does the control unit 77960-SNA-H822-M1 get to Airbag24?

You can send the unit as a parcel or have it collected by UPS for an extra charge. Airbag24 sends it back to you by UPS after the repair.

The printed repair order is in the parcel, and the control unit is packed shockproof.