Airbag control unit with part number 77960-TEA-H410-M4

What does the airbag control unit 77960-TEA-H410-M4 do?

As the central control unit of the SRS at Honda, the 77960-TEA-H410-M4 processes the signals from the crash sensors. In an emergency it determines within milliseconds which airbags and seatbelt pretensioners trigger. At the same time it monitors the system and shows faults via the airbag warning light.

The continuous monitoring covers sensors, triggers and the wiring. If a deviation is found, the unit stores the finding.

An accident causes crash data to be stored in the memory; the control unit then locks itself.

Why does the control unit 77960-TEA-H410-M4 fail?

The most common reason for failures is crash data that remain in the unit after an accident, even without an airbag having fired. A normal diagnostic tool cannot remove them; Airbag24 erases them during the repair of the 77960-TEA-H410-M4.

An airbag does not have to have fired for crash data to be created. The unit registers the event and keeps the entry.

In addition, aged components, poorly soldered points, and moisture or rust on the plugs are possible causes. Voltage spikes, for example from a weak battery or a jump start, can also damage the unit.

Whether one of these causes applies is shown by the examination on the test bench, not by a look into the vehicle.

How can you tell that the 77960-TEA-H410-M4 is defective?

This is how you can tell: the airbag warning light in the instrument cluster stays on permanently or flickers, an error message appears, the diagnostic tool no longer reaches the control unit, or the fault memory remains full. In an emergency, airbags and seatbelt pretensioners may then not be functional.

A warning light that only comes on intermittently is reason enough for a check, because a fault can show itself repeatedly.

The exact cause is established by a check; assumptions based on symptoms alone are not sufficient.

Which vehicles is the 77960-TEA-H410-M4 fitted in?

According to our information, the 77960-TEA-H410-M4 is fitted in these vehicles: Honda Civic 10th generation (2015-2022).

Here is the overview:

• Honda Civic 10th generation (2015-2022)

Reading out the fault memory before removal confirms whether the control unit itself is affected. Then compare the part number on the label with this page.

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-TEA-H410-M4 work?

First read out the fault memory, then disconnect the battery and remove the 77960-TEA-H410-M4. Then create a repair order online. Processing at Airbag24 usually takes 3–4 working days.

Enclose the fault memory log with the order. Remove the control unit carefully so that no cables are damaged.

Airbag24 then examines the unit on the test bench, replaces defective components, erases the stored crash data and carries out a function test. Only after that does your own unit go 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-TEA-H410-M4 get to Airbag24?

You send the control unit 77960-TEA-H410-M4 either as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends your own unit back by UPS.

Print the repair order and put it in the parcel with the unit, packed so that it is shockproof.