Airbag control unit with part number 77960-TGG-E010-M4

What does the airbag control unit 77960-TGG-E010-M4 do?

The airbag control unit 77960-TGG-E010-M4 forms the central switching unit of the SRS system on Honda. From the signals of the crash sensors it calculates, within milliseconds of an impact, which airbags and seatbelt pretensioners are triggered.

In addition, it checks the entire system continuously. If it detects a fault, it reports it via the airbag warning light.

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

Why does the control unit 77960-TGG-E010-M4 fail?

The most common cause is crash data from an earlier accident, even if no airbag was triggered in it. Other possible causes on the 77960-TGG-E010-M4 are aged components, corrosion at plug connections and voltage spikes.

Crash data remains stored in the unit, and a standard diagnostic tool cannot remove it.

Airbag24 removes the crash data during the repair.

Electronic components age over the years, and solder joints can go cold over time. Moisture and voltage spikes, for example from a weak battery or jump-starting, also put the unit under strain.

How can you tell that the 77960-TGG-E010-M4 is defective?

The airbag warning light in the instrument cluster indicates a defect on the 77960-TGG-E010-M4 as soon as it lights up permanently or intermittently. A fault message in the instrument cluster and a diagnostic tool without connection to the control unit are also signs.

In that case there is a risk that airbags and seatbelt pretensioners will not trigger in an emergency.

Such a finding is a clear sign that the system needs to be checked.

Which vehicles is the 77960-TGG-E010-M4 fitted in?

A look at the list helps with the comparison. The 77960-TGG-E010-M4 is fitted in these vehicles: Honda Civic 10th generation (2015-2022).

The assignment to vehicles looks like this:

• Honda Civic 10th generation (2015-2022)

On the one hand, compare the part number on the label with this page; this only confirms that it is the right unit. On the other hand, have the fault memory read out before you remove anything. Only this finding 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-E010-M4 work?

With the 77960-TGG-E010-M4, everything begins with reading out the fault memory, whose log goes into the parcel. Only then do you disconnect the battery and remove the control unit from the vehicle, before you create a repair order online and ship the unit.

On the test bench, Airbag24 examines the control unit, restores defective components to proper condition, removes the crash data and tests the function. Then your unit comes back. Processing at Airbag24 generally takes 3–4 working days.

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-E010-M4 get to Airbag24?

You send the control unit 77960-TGG-E010-M4 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.

Remember to include the printed repair order in the parcel, and pack the unit shockproof.