Airbag control unit with part number 77960-TGG-G110-M4

What does the airbag control unit 77960-TGG-G110-M4 do?

The airbag control unit 77960-TGG-G110-M4 coordinates the restraint system (SRS) of Honda. It reads out the crash sensors, decides within milliseconds in the event of an accident which airbags and seatbelt pretensioners are triggered, and checks the system continuously. After an accident it stores crash data and locks itself.

The unit reports faults via the airbag warning light in the instrument cluster, so you can read the condition of the system at any time.

The connection to sensors and triggers runs via cables, which must work reliably during operation.

Why does the control unit 77960-TGG-G110-M4 fail?

Stored crash data after an accident is the most common cause, even if no airbag has deployed, and a normal diagnostic tool cannot erase it. Aged components, cold solder joints, moisture at plug connections and voltage spikes are also possible.

The other causes can be summarised briefly:

• Aged electronic components
• Cold solder joints on the circuit board
• Moisture and corrosion on plug connections
• Voltage spikes, for example from a weak battery or a jump start

A normal diagnostic tool cannot remove the crash data, so the finding remains after an impact.

How can you tell that the 77960-TGG-G110-M4 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, an error message appears in the instrument cluster, and the diagnostic tool finds no connection to the control unit. In addition, a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then not trigger.

The warning light is the clearest sign of a fault and should be taken seriously with every message.

If a message recurs, have the system checked before you continue driving. A diagnostic tool without a connection may also be caused by the wiring or the power supply.

Which vehicles is the 77960-TGG-G110-M4 fitted in?

The control unit 77960-TGG-G110-M4 is fitted in these vehicles: Honda Civic 10th generation (2015-2022).

The vehicles for which the unit is intended are listed here.

• Honda Civic 10th generation (2015-2022)

First compare the part number on the label of the removed unit with this page, which only confirms that it is the right unit. Then have the fault memory read out, because only the result shows WHETHER the control unit is defective or whether a plug or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 77960-3A2-A810-M2, 77960-3A2-A820-M2, 77960-3A2-A830-M2, 77960-TBA-A01, 77960-TBA-A02, 77960-TBA-A03.

How does the repair of the 77960-TGG-G110-M4 work?

Have the fault memory read out and attach the log, then disconnect the battery before you remove the control unit 77960-TGG-G110-M4. Then create a repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, repairs defective components, erases the stored crash data and carries out a functional test.

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-G110-M4 get to Airbag24?

There are two ways to get the control unit 77960-TGG-G110-M4 to Airbag24: you send it in as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back to you via UPS.

Put the printed repair order into the parcel and pack the unit shock-resistant.