Airbag control unit with part number 77960-TR0-K812-M1

What does the airbag control unit 77960-TR0-K812-M1 do?

77960-TR0-K812-M1 is an SRS control unit for Honda that reads the crash sensors. In an emergency it decides within milliseconds which airbags and seatbelt pretensioners respond.

The unit works constantly in the background and checks the entire restraint system. If it detects a fault, it indicates this via the airbag warning light so that you can respond.

If an accident is registered, the control unit stores crash data and then locks itself.

Why does the control unit 77960-TR0-K812-M1 fail?

Most often crash data is responsible, stored after an accident even if no airbag has deployed. Aged components, cold solder joints, moisture or corrosion on plugs and voltage spikes, for example from a weak battery, are also possible.

Crash data remains in the memory, because a standard diagnostic tool cannot access it. The problem is then hardly visible in the vehicle itself.

The other triggers are more general in nature: electronics age, solder connections can lose contact, and damp or rust on the plugs disrupts the connection.

How can you tell that the 77960-TR0-K812-M1 is defective?

On the 77960-TR0-K812-M1, a defect first shows up at the airbag warning light in the instrument cluster, which lights up permanently or intermittently. In addition, a fault message appears in the instrument cluster, and the diagnostic tool does not find the control unit or the fault memory cannot be erased.

In an emergency, airbags and seatbelt pretensioners may then fail to deploy. Please have the warning looked into promptly, even if the car otherwise runs without any problems.

Which vehicles is the 77960-TR0-K812-M1 fitted in?

Whether your car is included can be seen from the list. The control unit 77960-TR0-K812-M1 is fitted in these vehicles: Honda Civic 9th generation (2011-2017).

The following vehicles are on record for us for this part number:

• Honda Civic 9th generation (2011-2017)

Comparing the part number on the label of the removed unit with this page only confirms that you have the correct unit in front of you. Have the fault memory read out beforehand, as only this shows whether the control unit is defective or a plug or cable is causing the problem.

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-K812-M1 work?

First have the fault memory read out and keep the log. Then disconnect the battery and remove the 77960-TR0-K812-M1; afterwards create a repair order online and pack the unit well. Airbag24 tests the unit on the test bench, replaces defective components, erases crash data and carries out a function test before your own unit is sent back.

At Airbag24, processing usually takes 3–4 working days, and this covers only testing, repair and function testing. Your work steps and the dispatch are not included.

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-K812-M1 get to Airbag24?

You send the control unit 77960-TR0-K812-M1 to us as a parcel, or you book a UPS collection for an extra charge. Your own unit goes back by UPS once Airbag24 has completed the repair.

The printed repair order goes into the parcel. Please make sure the packaging is shockproof.