Airbag control unit with part number 77960-TEA-Y910-M4

What does the airbag control unit 77960-TEA-Y910-M4 do?

The airbag control unit 77960-TEA-Y910-M4 controls the restraint system (SRS) for Honda. In a crash, it reads the crash sensors and decides within milliseconds which airbags and seatbelt pretensioners are triggered.

The unit checks the connected components continuously. If it detects a deviation, the airbag warning light in the instrument cluster comes on.

After an accident, it stores crash data and locks itself. While driving this is not noticed, but a diagnosis shows it.

Why does the control unit 77960-TEA-Y910-M4 fail?

The most common cause is crash data from an accident, even if no airbag has deployed; a standard diagnostic tool cannot erase it. Aged components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes can also contribute.

The crash data remains stored in the unit, because it cannot be removed with the usual diagnostic tool. The other causes are summarised in this list:

• aged electronic components
• cold solder joints
• moisture and corrosion on plug connections
• voltage spikes, for example from a weak battery or a jump start

How can you tell that the 77960-TEA-Y910-M4 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently. An error message also appears, the diagnostic tool cannot find the control unit, and the fault memory cannot be cleared.

The system reports these signs itself, so this is not a guess. The light is the indication that the vehicle gives on its own.

In an emergency, airbags and seatbelt pretensioners may fail to deploy. A timely check is therefore sensible.

Which vehicles is the 77960-TEA-Y910-M4 fitted in?

The details come from our assignment to this part number. The control unit 77960-TEA-Y910-M4 is fitted in these vehicles: Honda Civic 10th generation (2015-2022).

The vehicles recorded so far:

• Honda Civic 10th generation (2015-2022)

First, compare the part number on the label of the removed unit with this page; this shows whether you have the right unit. Have the fault memory read out beforehand, because only this result shows whether the control unit itself is defective or whether a plug 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-TEA-Y910-M4 work?

First, read out the fault memory and attach the log. Then disconnect the battery and only then remove the control unit. Next, create a repair order online and send the unit in well packed.

Airbag24 checks the unit on the test bench, repairs defective components, erases the crash data and carries out a function test. The unit then goes back to the customer.

For checking, repairing and testing at Airbag24, processing usually 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-TEA-Y910-M4 get to Airbag24?

You send the unit as a parcel, or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

Put the printed repair order in the parcel, and pack the unit shock-proof.