Airbag control unit with part number 77960-TEA-H510-M4

What does the airbag control unit 77960-TEA-H510-M4 do?

The airbag control unit 77960-TEA-H510-M4 is the evaluation unit of the SRS restraint system in Honda vehicles. From the signals of the crash sensors it calculates whether and which airbags and seatbelt pretensioners must be triggered in an accident. It also checks the system constantly and reports faults via the airbag warning light.

After an accident the control unit stores crash data and locks itself. The storage runs automatically; you do not need to do anything for it.

How does the control unit 77960-TEA-H510-M4 get to Airbag24?

The most common cause is crash data stored after an accident, even if no airbag has fired. A normal diagnostic tool cannot remove this data. Added to this are aged electronic components, cold solder joints, moisture and corrosion at plug connections, as well as voltage spikes, for example from a weak battery or a jump start.

The other causes act over a longer period, because ageing and moisture change the electronics step by step. Voltage spikes, on the other hand, occur suddenly and can likewise leave damage behind.

How can you tell that the 77960-TEA-H510-M4 is defective?

The airbag warning light in the instrument cluster comes on permanently or intermittently. In addition, the instrument cluster shows an error message, and the diagnostic tool receives no connection to the control unit. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

The light may stay on only briefly and then go out again. This too is a sign that you should have checked.

A missing connection to the diagnostic tool points to a problem in the control unit itself or in the wiring to it. Which point is affected is shown only by evaluating the fault memory.

Which vehicles is the 77960-TEA-H510-M4 fitted in?

The following vehicles are assigned to the unit 77960-TEA-H510-M4, in which it is installed: Honda Civic 10th generation (2015-2022).

Here is the assignment to the vehicles:

• Honda Civic 10th generation (2015-2022)

Compare the part number on the label of the removed unit with this page. This only ensures that it is the correct unit. Also have the fault memory read out before you change anything on the vehicle. 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-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-H510-M4 work?

First you have the fault memory read out and enclose the log, then you disconnect the battery and only then remove the control unit 77960-TEA-H510-M4. Then you create the repair order online and send the unit in well packed. Airbag24 checks, repairs and tests it, deletes the crash data and returns your own unit.

The order serves safety, which is why it is binding.

At Airbag24 the unit first goes on the test bench. Afterwards defective components are replaced and a function test is carried out. Airbag24 allows 3–4 working days as a rule for the checking, repairing and testing.

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-H510-M4 get to Airbag24?

You either send the control unit 77960-TEA-H510-M4 as a parcel, or you book a UPS collection for an extra charge. The return after the repair is made by UPS.

Enclose the printed repair order and pack the unit shock-resistant.