Airbag control unit with part number 77960-3A0-K820-M2

What does the airbag control unit 77960-3A0-K820-M2 do?

In Honda, the airbag control unit 77960-3A0-K820-M2 evaluates the signals from the crash sensors and determines which airbags and seatbelt pretensioners deploy in an accident. The decision is made within milliseconds; the unit monitors the restraint system continuously and indicates faults via the airbag warning light.

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

Why does the control unit 77960-3A0-K820-M2 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed; a normal diagnostic tool cannot remove it. In addition, aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes, for example from a weak battery or a jump start, come into consideration.

The other causes develop over time: components age, solder joints can crack, moisture attacks contacts, and voltage spikes stress the electronics.

How can you tell that the 77960-3A0-K820-M2 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and an error message appears. The diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared.

The light indicates the defect directly. As long as it is lit, the airbags and seatbelt pretensioners may not deploy in an emergency. A defect does not disappear on its own, so have the system checked.

Which vehicles is the 77960-3A0-K820-M2 fitted in?

The airbag control unit 77960-3A0-K820-M2 is fitted in these vehicles: Honda CR-V 6 (from 2022).

Specifically, these vehicles are involved:

• Honda CR-V 6 (from 2022)

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

How does the repair of the 77960-3A0-K820-M2 work?

First read out the fault memory, attach the log and disconnect the battery. Only then remove the control unit and create a repair order online.

Airbag24 inspects the unit on the test bench, replaces defective components, deletes stored crash data and carries out a function test. Afterwards your own repaired unit is returned to you. Processing at Airbag24 usually takes 3–4 working days.

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 77960-3A0-K820-M2 get to Airbag24?

Either you send the unit in as a parcel, or you book a UPS collection for an extra charge. Airbag24 sends it back to you by UPS after the repair.

Enclose the printed repair order and pack everything shock-resistant.