Airbag control unit with part number 77960-T0A-Y411-M3

What does the airbag control unit 77960-T0A-Y411-M3 do?

The airbag control unit 77960-T0A-Y411-M3 forms the central control unit of the SRS system for Honda. It processes the measurements from the crash sensors and triggers the appropriate airbags and seatbelt pretensioners within milliseconds in an accident.

In operation, it checks the entire system continuously. It reports detected faults via the airbag warning light in the instrument cluster.

After a crash, the unit stores crash data and locks itself. The effect of the system depends on this control unit, because only it evaluates the sensor signals.

Why does the control unit 77960-T0A-Y411-M3 fail?

Stored crash data after an accident is the most common cause for the 77960-T0A-Y411-M3, even if no airbag has triggered. Further possible causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data remains in the unit after the accident, and a normal diagnostic tool cannot erase it. Airbag24 erases it during the repair.

The other causes are general in nature. Electronic components can age, cold solder joints lead to contact problems, and moisture and corrosion attack the plugs.

Voltage spikes, for example from a weak battery or jump-starting, can also contribute to the fault.

How can you tell that the 77960-T0A-Y411-M3 is defective?

On the 77960-T0A-Y411-M3, the airbag warning light in the instrument cluster stays on permanently or intermittently and thereby indicates a defect. In addition, there is an error message in the instrument cluster, no connection to the diagnostic tool, and a fault memory that cannot be cleared.

The airbag warning light is a sign that airbags and seatbelt pretensioners may not trigger in an emergency.

Therefore, do not wait for the problem to resolve itself, but have the system checked.

Which vehicles is the 77960-T0A-Y411-M3 fitted in?

The 77960-T0A-Y411-M3 is fitted in these vehicles: Honda CR-V 4 RM (2012-2018).

These vehicles are recorded for this part number, as the following list shows.

• Honda CR-V 4 RM (2012-2018)

Compare the part number on the label of the removed control unit with this page. This only confirms that it is the right unit. Have the fault memory read out beforehand, because only this result shows whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 5WK43782, 77960-SWA-G212-M4, 77960-SWA-G214-M4, 77960-T1G-G920-M4.

How does the repair of the 77960-T0A-Y411-M3 work?

For the repair of the 77960-T0A-Y411-M3, first read out the fault memory and attach the log. Then disconnect the battery, and only after that comes the removal of the control unit. You create the repair order online, then pack the unit and send it in.

Airbag24 checks the unit on the test bench, repairs defective components, erases the stored crash data and carries out a function test. For checking, repairing and testing, expect 3–4 working days, after which your own unit is returned.

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-T0A-Y411-M3 get to Airbag24?

You can send the 77960-T0A-Y411-M3 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

The printed repair order goes into the parcel, and the unit is packed shock-proof.