Airbag control unit with part number 77960-T2A-Z930-M4

What does the airbag control unit 77960-T2A-Z930-M4 do?

The control unit 77960-T2A-Z930-M4 coordinates the SRS restraint system of the Honda. It detects an impact from the sensor signals and determines within milliseconds which airbags and seatbelt pretensioners fire.

It also checks the function of the system continuously. Any faults found are shown by the airbag warning light in the instrument cluster.

If an accident has occurred, the unit stores crash data and locks itself. The lock is lifted only by the repair.

Why does the control unit 77960-T2A-Z930-M4 fail?

Crash data from an accident is the most common cause, even when no airbag has deployed. A standard diagnostic tool cannot erase it.

At Airbag24, the crash data is erased during the repair.

Other causes are aged electronic components, cold solder joints, and moisture and corrosion at the plug connections. Voltage spikes, for example from a weak battery or a jump start, also stress the unit.

How can you tell that the 77960-T2A-Z930-M4 is defective?

A defect shows up as the airbag warning light staying on constantly or intermittently, as an error message in the instrument cluster, or as a fault memory that cannot be cleared.

If the diagnostic tool does not connect to the control unit, that is a further indication. In this state, the airbags and seatbelt pretensioners may fail to deploy in an emergency, so the check should take place promptly.

Which vehicles is the 77960-T2A-Z930-M4 fitted in?

The control unit 77960-T2A-Z930-M4 is fitted in these vehicles: Honda Accord 9th generation (2012-2019).

The following overview shows which vehicles belong to this part number:

• Honda Accord 9th generation (2012-2019)

Before removing the control unit, have the fault memory read out. Then compare the part number on the label with this page. This shows whether the failure really lies in the control unit.

For the same vehicles, we also repair control units with the part numbers 77960-SEA-G815-M1, 77960-T3L-A012-M1, C0W6K4VDA.

How does the repair of the 77960-T2A-Z930-M4 work?

At Airbag24, checking, repairing and testing normally take 3–4 working days. Beforehand, you read out the fault memory, disconnect the battery, remove the control unit 77960-T2A-Z930-M4 and create the repair order online.

Attach the log of the fault readout to the unit before you send it, well packed.

Airbag24 examines the control unit on the test bench, replaces defective components, erases the crash data and carries out a function test. 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-T2A-Z930-M4 get to Airbag24?

You send the control unit 77960-T2A-Z930-M4 as a parcel or book a UPS collection. After the repair, it is returned to you by UPS.

The printed repair order goes in the parcel. Pack the unit shock-proof so that it arrives undamaged.