Airbag control unit with part number 77960-SNB-U615-M1

What does the airbag control unit 77960-SNB-U615-M1 do?

The airbag control unit 77960-SNB-U615-M1 is the central control unit of the restraint system (SRS) for Honda. It evaluates the signals from the crash sensors and determines within milliseconds in an accident which airbags and seatbelt pretensioners are triggered. After an accident it stores crash data and locks itself.

While driving, the unit monitors the system continuously. If it detects a fault, it creates an entry in the fault memory and shows the fault via the airbag warning light in the instrument cluster.

Sensors, wiring and firing circuits work together, and the control unit is the point where all information comes together.

Why does the control unit 77960-SNB-U615-M1 fail?

The most common cause is crash data stored after an accident, even if no airbag has triggered; a normal diagnostic tool cannot erase it. Other causes include aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data are easy to overlook, because the vehicle carries on unremarkably after the event. Airbag24 erases them as part of the repair.

Aged components and solder joints deteriorate over time and cannot be seen on the vehicle. Voltage spikes, for example from a weak battery or jump-starting, can additionally strain components.

How can you tell that the 77960-SNB-U615-M1 is defective?

A defect shows up as the airbag warning light in the instrument cluster lighting up permanently or intermittently, as an error message in the instrument cluster, as a missing connection to the diagnostic tool, or as a fault memory that cannot be cleared. In this state airbags and seatbelt pretensioners may fail to trigger in an emergency.

The warning light is the control unit's direct message to you, and it must therefore be taken seriously.

Which vehicles is the 77960-SNB-U615-M1 fitted in?

The 77960-SNB-U615-M1 is fitted in these vehicles: Honda Civic 8th generation (2005-2011).

The following list shows the vehicles recorded for this part number.

• Honda Civic 8th generation (2005-2011)

Compare the part number on the label of the removed unit with this page. This only ensures that you have the correct unit in front of you. Also have the fault memory read out, because only the result shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 77960-S02-A840-M3, 77960-SMG-G014-M1.

How does the repair of the 77960-SNB-U615-M1 work?

First read out the fault memory and enclose the log with the unit. Then disconnect the battery, and only then remove the control unit. Next create a repair order online and pack the unit well. Testing, repairing and the function test at Airbag24 usually take 3–4 working days.

Airbag24 checks the unit on the test bench, replaces defective components, erases the stored crash data and carries out a function test. Afterwards your own unit goes back to you.

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-SNB-U615-M1 get to Airbag24?

You send the unit 77960-SNB-U615-M1 in as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 sends it back to you by UPS.

Pack the control unit shock-proof and put the printed repair order into the parcel.