Airbag control unit with part number 77960-3V0-K620-M1

What does the airbag control unit 77960-3V0-K620-M1 do?

The control unit 77960-3V0-K620-M1 controls the restraint system (SRS) of Honda and, in a crash, triggers the intended airbags and seatbelt pretensioners after an evaluation within milliseconds. To do this, it receives the signals from the crash sensors.

The unit monitors the entire system continuously. If a fault occurs, the airbag warning light in the instrument cluster comes on.

After an accident, it stores crash data and locks itself.

Why does the control unit 77960-3V0-K620-M1 fail?

On the 77960-3V0-K620-M1, the most common cause is crash data that was stored after an accident, even if no airbag has been triggered. A normal diagnostic tool cannot erase it. Other causes are ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

The stored crash data cannot be removed with a usual diagnostic tool, so erasing it is part of the repair.

The other causes concern the area around the electronics. Ageing and cold solder joints affect the components themselves, moisture and corrosion attack the plugs, and voltage spikes arise, for example, from a weak battery or jump-starting.

How can you tell that the 77960-3V0-K620-M1 is defective?

The airbag warning light in the instrument cluster indicates the defect by staying on permanently or intermittently. In addition, there are fault messages, a missing connection between the diagnostic tool and the control unit, and a fault memory that cannot be cleared. In an emergency, the airbags and seatbelt pretensioners may then fail to trigger.

The light is a warning that cannot be ignored, even if the vehicle appears to function normally in everyday use.

Please have the cause clarified promptly, so that it is established.

Which vehicles is the 77960-3V0-K620-M1 fitted in?

The control unit 77960-3V0-K620-M1 is fitted in these vehicles: Honda HR-V 2nd generation (2015-2022).

Here is the list of vehicles recorded for this control unit.

• Honda HR-V 2nd generation (2015-2022)

On the one hand, you compare the part number on the label of the removed unit with this page; that only ensures that you have the right unit in front of you. On the other hand, have the fault memory read out. Only this result shows whether the control unit itself is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 77960-3V0-A81, 77960-T7S-A21, 77960-T7S-A212-M2, 77960T7SK410M2.

How does the repair of the 77960-3V0-K620-M1 work?

On the 77960-3V0-K620-M1, first have the fault memory read out and enclose the log, then disconnect the battery. Only after that remove the control unit. Then create a repair order online and send in the unit, well packed. Airbag24 usually needs 3–4 working days for checking, repairing and testing.

On the test bench, the unit is checked, defective components are replaced where necessary, crash data is erased and a functional test is carried out. After that, the unit is returned to you.

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 77960-3V0-K620-M1 get to Airbag24?

You can send the control unit 77960-3V0-K620-M1 as a parcel or have it dispatched by UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

Enclose the printed repair order and pack the unit shock-proof.