Airbag control unit with part number 77960-TT0-Y610-M2

What does the airbag control unit 77960-TT0-Y610-M2 do?

The airbag control unit 77960-TT0-Y610-M2 controls the restraint system (SRS) of Honda. In an accident it evaluates the crash sensors, determines within milliseconds which airbags and seatbelt pretensioners trigger, and monitors the system continuously.

Monitoring runs without interruption during operation. Detected faults are shown via the airbag warning light and stored in the fault memory.

After an accident it stores crash data and locks itself. You should keep this state in mind with every warning.

Why does the control unit 77960-TT0-Y610-M2 fail?

The most common cause is crash data stored in the unit after an accident, even if no airbag has triggered. Further causes are aged electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes, such as those from a weak battery or jump-starting.

A standard diagnostic tool cannot remove crash data. Airbag24 clears it as part of the repair.

Whether aging, moisture or voltage is the cause in your unit cannot be told from a distance. The examination of the unit shows this.

How can you tell that the 77960-TT0-Y610-M2 is defective?

You can recognise a defect by the airbag warning light in the instrument cluster, which stays on permanently or intermittently, by a fault message in the instrument cluster, or by a diagnostic tool that cannot establish a connection. A fault memory that cannot be cleared also belongs to this. In that case, airbags and seatbelt pretensioners may possibly fail to trigger in an emergency.

Typical signs are:

• airbag warning light that stays on permanently or intermittently
• fault message in the instrument cluster
• diagnostic tool without connection to the control unit
• fault memory that cannot be cleared

Do not ignore the warning light, even if the vehicle otherwise works normally.

Which vehicles is the 77960-TT0-Y610-M2 fitted in?

The 77960-TT0-Y610-M2 is fitted in these vehicles: Honda Civic 9th generation (2011-2017). The information is limited to the vehicles we know of so far.

These models are known to us:

• Honda Civic 9th generation (2011-2017)

To compare, check the part number on the label against this page. This establishes whether it is the right unit, but not whether it is defective. That question is answered by the fault memory, which you should have read out beforehand, because it also shows whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 77960-S02-A840-M3, 77960-SMG-G120-M1, 77960-TV0-G020-M4.

How does the repair of the 77960-TT0-Y610-M2 work?

First have the fault memory read out and keep the protocol ready. Then disconnect the battery, remove the control unit and create a repair order online. Checking, repair and testing at Airbag24 usually take 3–4 working days.

Then send the well-packed unit with the protocol. At Airbag24 it is checked on the test bench, defective components are replaced, the crash data is erased and a function test is carried out.

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-TT0-Y610-M2 get to Airbag24?

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

The printed repair order goes into the parcel, and the control unit must be packed shock-proof.