Airbag control unit with part number 77960-TGH-G310-M4

What does the airbag control unit 77960-TGH-G310-M4 do?

The airbag control unit 77960-TGH-G310-M4 acts as the central unit of the restraint system (SRS) in the vehicle from Honda. It processes the data from the crash sensors, decides in an accident within milliseconds whether airbags and seatbelt pretensioners are triggered, and monitors the system permanently. After an accident it stores crash data and locks itself.

The control unit reports faults via the airbag warning light in the instrument cluster, so you notice a malfunction directly. The light is the place where a malfunction first becomes visible to you.

Crash data remain in the unit after an accident. They record what the control unit has registered and concern only the control unit itself.

Why does the control unit 77960-TGH-G310-M4 fail?

The most common cause for control unit 77960-TGH-G310-M4 is crash data stored after an accident, even if no airbag has deployed. Further possible causes are aged electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes.

A normal diagnostic tool cannot erase the crash data. At Airbag24 they are erased during the repair.

Moisture and corrosion on plug connections impair the contact. Aged components, cold solder joints and voltage spikes, for example from a weak battery or jump-starting, put additional stress on the electronics.

How can you tell that the 77960-TGH-G310-M4 is defective?

A defect in the 77960-TGH-G310-M4 shows when the airbag warning light in the instrument cluster lights up permanently or intermittently. A fault message in the instrument cluster, a diagnostic tool without connection to the control unit or a fault memory that cannot be cleared also indicate it.

In an emergency, airbags and seatbelt pretensioners may not be able to deploy because of such a defect. The warning light reports the fault so that it can be checked, and a check should therefore be scheduled soon.

Which vehicles is the 77960-TGH-G310-M4 fitted in?

The vehicle registration document tells you whether your model is included. The airbag control unit 77960-TGH-G310-M4 is fitted in these vehicles: Honda Civic 10th generation (2015-2022).

The list shows the vehicles that we know of for this control unit.

• Honda Civic 10th generation (2015-2022)

A comparison of the part number on the label of the removed unit with this page shows whether you have the right unit in front of you. In addition, have the fault memory read out before removal, because only that result clarifies 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-TGH-G310-M4 work?

First have the fault memory read out and attach the log, then disconnect the battery and only then remove control unit 77960-TGH-G310-M4. Next create a repair order online and send the unit in well packed. At Airbag24 processing usually takes 3–4 working days.

The unit is examined on the test bench, defective components are replaced and stored crash data is erased. A function test then follows, and your own unit is returned 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-TGH-G310-M4 get to Airbag24?

You send control unit 77960-TGH-G310-M4 either as a parcel or book a UPS collection for an extra charge. The return after the repair is made by UPS.

Enclose the printed repair order with the parcel and pack the unit shockproof.