Airbag control unit with part number 77960-TGG-A030-M2

What does the airbag control unit 77960-TGG-A030-M2 do?

The airbag control unit 77960-TGG-A030-M2 is the central control unit of the restraint system (SRS) for Honda. It evaluates the signals from the crash sensors and, in an accident, decides within fractions of a second which airbags and seatbelt pretensioners are triggered.

The system is monitored continuously. The control unit indicates faults via the airbag warning light in the instrument cluster.

After an accident it stores crash data and is locked afterwards.

Why does the control unit 77960-TGG-A030-M2 fail?

The most common cause is crash data stored after an accident, even if no airbag has triggered. Other possible causes are aged electronic components, cold solder joints, moisture and corrosion on plug connections, as well as voltage spikes.

Crash data cannot be deleted with a standard diagnostic tool. At Airbag24 it is removed as part of the repair, and the cause is determined on the test bench.

Voltage spikes arise, for example, from a weak battery or from a jump start. Which of the other causes applies in the individual case is shown only by the test.

How can you tell that the 77960-TGG-A030-M2 is defective?

A defect shows up as an airbag warning light in the instrument cluster that is either permanently or intermittently lit. In addition there is an error message, a diagnostic tool without connection to the control unit, and a fault memory that cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may then not trigger. That is why such a warning is not a minor matter, but a reason to have the system checked promptly.

If necessary, have the warning read out by a workshop, and you will know which message is stored.

Which vehicles is the 77960-TGG-A030-M2 fitted in?

The control unit 77960-TGG-A030-M2 from Honda is fitted in these vehicles: Honda Civic 10th generation (2015-2022).

The following list shows the vehicles to which this part number is assigned.

• Honda Civic 10th generation (2015-2022)

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

For the same vehicles, we also repair control units with the part numbers 77960-SMG-G014-M1, 77960-TBA-A01, 77960-TBA-A02, 77960-TBA-A03, 77960-TBA-A04, 77960-TBA-A05.

How does the repair of the 77960-TGG-A030-M2 work?

For the repair of the 77960-TGG-A030-M2, first have the fault memory read out and attach the log. Then disconnect the battery, remove the control unit, create a repair order online and send in the well-packed unit.

This order is for safety reasons and should definitely be kept before the control unit leaves the vehicle.

At Airbag24 the unit is checked on the test bench, defective components are repaired, the stored crash data is deleted and a function test follows. Then your own unit comes back to you. Checking, repairing and testing usually takes 3–4 working days at Airbag24.

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-TGG-A030-M2 get to Airbag24?

You send the control unit 77960-TGG-A030-M2 in as a package or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

Place the printed repair order in the package and pack the unit shock-proof.