Airbag control unit with part number 77960-TR0-D811-M2

What does the airbag control unit 77960-TR0-D811-M2 do?

The airbag control unit 77960-TR0-D811-M2 processes the measurements of the crash sensors in the restraint system (SRS) of Honda. In an accident it decides within milliseconds which airbags and seatbelt pretensioners are triggered.

It also monitors the system continuously. It reports faults via the airbag warning light in the instrument cluster, so you can recognise them.

After an accident the control unit stores crash data and locks itself.

Why does the control unit 77960-TR0-D811-M2 fail?

Crash data from an earlier accident is the most common cause for the 77960-TR0-D811-M2, even without a triggered airbag. Other causes are aged components, moisture at plug connections and voltage spikes.

A normal diagnostic tool cannot remove this crash data. Airbag24 erases it during the repair.

Aged electronic components, cold solder joints and moisture at plug connections also play a role. Voltage spikes, for example from a weak battery or a jump start, can also lead to failure.

How can you tell that the 77960-TR0-D811-M2 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently if there is a defect in the 77960-TR0-D811-M2. A fault message may also appear, the diagnostic tool may be unable to connect, or the fault memory cannot be cleared.

The light is a direct sign of a reported fault, and it tells you that something is wrong in the restraint system.

As long as the fault persists, airbags and seatbelt pretensioners may not deploy in an emergency. Have the warning checked promptly.

Which vehicles is the 77960-TR0-D811-M2 fitted in?

Whether a car of Honda contains this control unit depends on the model. The 77960-TR0-D811-M2 is fitted in these vehicles: Honda Civic 9th generation (2011-2017).

The assignment to this part number includes these vehicles:

• Honda Civic 9th generation (2011-2017)

Comparing the part number on the label of the removed unit with this page only shows whether you have the correct unit. Whether the control unit itself is defective is shown only by the fault memory. Have it read out before removal, because it also reveals whether a connector or a 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-D811-M2 work?

The process for the 77960-TR0-D811-M2 begins with reading out the fault memory, and you enclose the log. Processing at Airbag24 usually takes 3–4 working days.

Then disconnect the battery, remove the control unit and create the repair order online. Next, send the well-packed unit.

Airbag24 checks the unit on the test bench, replaces defective components and then erases stored crash data. A function test follows. After that your own unit comes back 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-TR0-D811-M2 get to Airbag24?

You can send the 77960-TR0-D811-M2 yourself as a parcel. Alternatively UPS will collect it from you for an extra charge, and UPS also handles the return after the repair.

The printed repair order goes into the parcel. The unit needs shock-resistant packaging.