Airbag control unit with part number 77960-TEA-Q910-M4

What does the airbag control unit 77960-TEA-Q910-M4 do?

The airbag control unit 77960-TEA-Q910-M4 is the control centre of the restraint system (SRS) in Honda. It processes the readings from the crash sensors, decides in a crash on airbags and seatbelt pretensioners, and monitors the system continuously. Faults are reported via the airbag warning light.

The decision is made within milliseconds, so that the restraint systems react in time.

If an accident has occurred, the unit stores crash data and locks itself. The next section explains the causes in detail.

Why does the control unit 77960-TEA-Q910-M4 fail?

The most common cause is stored crash data, even if no airbag has deployed; this cannot be deleted with a normal diagnostic tool. Aged components, cold solder joints, moisture and corrosion at plugs, and voltage spikes are also possible.

Airbag24 removes the crash data as part of the repair.

Aged components, cold solder joints and moisture cannot be reliably assessed without testing. Voltage spikes arise, for example, from a weak battery or a jump start.

How can you tell that the 77960-TEA-Q910-M4 is defective?

A defect shows mainly on the airbag warning light in the instrument cluster, which stays on permanently or intermittently. Fault messages in the instrument cluster, a lack of connection to the diagnostic tool and a fault memory that cannot be cleared are added to this. Airbags and seatbelt pretensioners may then fail to trigger in an emergency.

If the warning light comes on, treat it as a sign of a fault in the system. A diagnosis will then establish whether the fault lies in the control unit, a cable or a plug.

Which vehicles is the 77960-TEA-Q910-M4 fitted in?

The part number determines which models this unit applies to. The 77960-TEA-Q910-M4 is fitted in these vehicles: Honda Civic 10th generation (2015-2022).

These models are assigned to the part number:

• Honda Civic 10th generation (2015-2022)

First check whether the part number on the removed unit matches this page. That only establishes that you have the correct control unit in front of you. Having the fault memory read out is the next step, because it shows whether the control unit itself or 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-Q910-M4 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and remove the control unit. Next, create the repair order online and send the unit in, well packed. Processing at Airbag24 usually takes 3–4 working days.

Airbag24 checks the unit on the test bench and replaces worn components. In addition, the stored crash data is deleted before a function test is carried out, 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-TEA-Q910-M4 get to Airbag24?

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

The printed repair order goes into the parcel. Pack the control unit shockproof, so that it stays protected on the way.