Airbag control unit with part number 77960-TR0-L012-M2

What does the airbag control unit 77960-TR0-L012-M2 do?

The airbag control unit 77960-TR0-L012-M2 coordinates the restraint system (SRS) for Honda. From the crash sensor readings it works out, in a crash, which airbags and seatbelt pretensioners are triggered. After a crash the unit stores crash data and locks itself.

During operation it continuously checks the connections and sensors in the system. It saves any faults it finds in the fault memory and shows them via the airbag warning light.

The task remains the same regardless of how many airbags are fitted in the vehicle.

Why does the control unit 77960-TR0-L012-M2 fail?

The most common cause is crash data stored after an accident, even without a deployed airbag. With this control unit, crash data often cannot be erased; if you would like it erased, contact Airbag24 briefly before sending the unit in, and Airbag24 will then check the part number. Other causes are aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data arises in an accident, regardless of whether an airbag deploys. Repairing a defect remains possible.

The other causes lie in the electronics themselves or in their surroundings: components age, solder joints can go cold, and moisture attacks the contacts. Voltage spikes arise, for example, when starting with external power.

How can you tell that the 77960-TR0-L012-M2 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and an error message appears. The diagnostic tool gets no connection to the control unit, or the fault memory cannot be cleared. In an emergency, the airbags and seatbelt pretensioners may then fail to deploy.

The light is the first sign you will notice. A brief illumination after switching on the ignition is part of the usual self-test; if it stays on afterwards, a reported fault is present.

Even without the light, an unsuccessful diagnosis can be a sign of a problem in the system that should be clarified.

Which vehicles is the 77960-TR0-L012-M2 fitted in?

The control unit 77960-TR0-L012-M2 is found in these vehicles: Honda Civic 9th generation (2011-2017).

The list contains the vehicles for which this part number is on record.

• Honda Civic 9th generation (2011-2017)

Comparing the part number on the label with this page only ensures that you have removed the correct unit. Additionally have the fault memory read out, because only this report shows whether the control unit is defective or whether a connector or cable is behind it.

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-L012-M2 work?

Before removal, have the fault memory read out and attach the report to the order. Then disconnect the battery, remove the control unit, create the repair order online and send it in well packed. Checking, repairing and the function test at Airbag24 usually take 3–4 working days.

Airbag24 checks the unit that was sent in on the test bench, replaces defective components and then carries out a function test. Afterwards your own unit is returned to you.

If you would like the crash data erased, contact Airbag24 briefly before sending the unit in.

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-L012-M2 get to Airbag24?

You hand in the unit as a parcel or book a UPS collection for an extra charge. Airbag24 sends it back by UPS as soon as the repair is complete.

Enclose the printed repair order in the parcel and protect the control unit with shockproof packaging.