Airbag control unit with part number 77960-TEA-Q830-M4

What does the airbag control unit 77960-TEA-Q830-M4 do?

The airbag control unit 77960-TEA-Q830-M4 coordinates the restraint system (SRS) of Honda. From the signals of the crash sensors it calculates which airbags and seatbelt pretensioners are triggered in an accident, and it monitors the system permanently. It reports detected faults via the airbag warning light.

After an accident the unit stores crash data and locks itself. This record stays in the memory, and in normal operation you notice nothing of it.

Why does the control unit 77960-TEA-Q830-M4 fail?

Stored crash data is the most common cause, even if no airbag has fired, and an ordinary diagnostic tool cannot delete it. Other causes are aged electronics, cold solder joints, moisture and corrosion at plug connections, as well as voltage spikes.

The other causes act over time: electronics age, solder joints become weak over time, and moisture attacks contacts. Voltage spikes, on the other hand, arise briefly, for example when starting with an external power source.

The crash data and these causes can be present at the same time. The check will clarify this.

How can you tell that the 77960-TEA-Q830-M4 is defective?

A defect shows itself through the airbag warning light in the instrument cluster, which comes on permanently or intermittently, and through error messages. Then airbags and seatbelt pretensioners may not be able to deploy in an emergency.

These indications occur individually or together:

• Error message in the instrument cluster
• Diagnostic tool without connection to the control unit
• Fault memory that cannot be cleared

The warning light is a direct message from the system. Therefore do not wait to see whether it goes out on its own.

Which vehicles is the 77960-TEA-Q830-M4 fitted in?

These vehicles are known for the airbag control unit 77960-TEA-Q830-M4: Honda Civic 10th generation (2015-2022).

Here is the assignment:

• Honda Civic 10th generation (2015-2022)

A comparison of the part number on the label with this page makes sure that you have removed the correct unit. However, have the fault memory read out first, because only this finding shows whether the control unit itself 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-Q830-M4 work?

First have the fault memory read out and enclose the log. Then disconnect the battery, remove the control unit 77960-TEA-Q830-M4 and create a repair order online, and send the unit in well packed. Processing at Airbag24 generally takes 3–4 working days.

The order of the steps protects you while working on the airbag system and is therefore to be observed.

Airbag24 checks the unit on the test bench, replaces defective components, deletes the crash data and carries out a function test. This time applies only to 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-Q830-M4 get to Airbag24?

You send the control unit 77960-TEA-Q830-M4 as a parcel or arrange a UPS collection for an extra charge. After the repair it goes back to you by UPS.

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