Airbag control unit with part number 77960-TR0-Y612-M2

What does the airbag control unit 77960-TR0-Y612-M2 do?

The airbag control unit 77960-TR0-Y612-M2 is the central control unit of the restraint system (SRS) of Honda. It evaluates the signals from the crash sensors, decides within milliseconds in an accident which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. It reports faults via the airbag warning light.

After an accident it stores crash data and locks itself. This makes it indispensable for the function of the entire restraint system.

The crash sensors supply it with the readings on which it bases its decision.

Why does the control unit 77960-TR0-Y612-M2 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. Other causes are aged electronic components, cold solder joints, moisture and corrosion at connectors, and voltage spikes.

Crash data remains stored in the control unit, and a standard diagnostic tool cannot make it disappear. Airbag24 deletes it during the repair.

The other causes mainly affect the electronics and their connections: components age, solder joints can be cold, moisture attacks contacts, and a weak battery or a jump start can generate voltage spikes.

How can you tell that the 77960-TR0-Y612-M2 is defective?

The airbag warning light in the instrument cluster is on permanently or intermittently. Fault messages appear alongside it, or the diagnostic tool cannot find the control unit. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

For this case, the airbag warning light is the system's actual warning: it shows the fault even if it only occurs now and then. A fault memory that cannot be cleared confirms the finding.

A fault memory read can then narrow down the display, and the result concerns 77960-TR0-Y612-M2 itself.

Which vehicles is the 77960-TR0-Y612-M2 fitted in?

The airbag control unit 77960-TR0-Y612-M2 is fitted in these vehicles: Honda Civic 9th generation (2011-2017).

The vehicles to which this part number is assigned are shown in the following list:

• Honda Civic 9th generation (2011-2017)

Compare the part number on the label of the removed unit with this page. This only establishes that it is the correct unit. Only the fault memory reading decides whether there is a defect in the control unit or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 77960-TS4-U411-M1, 77960-TS4-U811-M2, 77960-TS4-Z611-M1, 77960-TS6-H711-M1, 77960-TT0-T011-M1, 77960-TT0-Y610-M2.

How does the repair of the 77960-TR0-Y612-M2 work?

With this unit, everything starts with the fault memory: have it read out and enclose the log. Then disconnect the battery and only then remove control unit 77960-TR0-Y612-M2. At Airbag24, processing, meaning testing, repair and function test, usually takes 3–4 working days.

Afterwards you create the repair order online and send in the well-packed unit. At Airbag24 it is checked, defective components are replaced, stored crash data is deleted, and then a function test follows.

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-TR0-Y612-M2 get to Airbag24?

Control unit 77960-TR0-Y612-M2 reaches Airbag24 either as a parcel or via a UPS collection booked for an extra charge. After the repair, Airbag24 returns it by UPS.

Pack the unit shockproof and place the printed repair order in the parcel.