Airbag control unit with part number 77960-3A0-H710-M2

What does the airbag control unit 77960-3A0-H710-M2 do?

The airbag control unit 77960-3A0-H710-M2 is the central control unit of the SRS restraint system for Honda. It evaluates the crash sensors, decides in an accident within milliseconds on the triggering of the airbags and seatbelt pretensioners, and monitors the system constantly.

It reports faults via the airbag warning light in the instrument cluster. After an accident the unit stores crash data and locks itself.

The system, made up of sensors, control unit and triggering, works only as a combination. The control unit links the individual components with one another.

Why does the control unit 77960-3A0-H710-M2 fail?

Stored crash data after an accident is the most common cause for the 77960-3A0-H710-M2, even if no airbag has triggered. Further causes are aged electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

A normal diagnostic tool cannot erase this crash data. Airbag24 erases it during the repair.

Aged electronics, cold solder joints, and moisture and corrosion at plug connections impair function over time. Voltage spikes, for example from a weak battery or a jump start, additionally stress the unit.

How can you tell that the 77960-3A0-H710-M2 is defective?

On the 77960-3A0-H710-M2 you recognise a defect from several signs in the instrument cluster and on the diagnostic tool. In an emergency, airbags and seatbelt pretensioners may then possibly not trigger.

These signs indicate a defect:

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

If any of these signs appears, have the fault checked promptly.

Which vehicles is the 77960-3A0-H710-M2 fitted in?

The control unit 77960-3A0-H710-M2 is fitted in these vehicles: Honda CR-V 6 (from 2022).

The list below names the vehicles individually:

• Honda CR-V 6 (from 2022)

Comparing the part number on the label of the removed unit with this page confirms only that it is the right unit. Having the fault memory read out beforehand, on the other hand, shows whether the control unit is defective or whether a plug or cable is the cause.

How does the repair of the 77960-3A0-H710-M2 work?

First have the fault memory read out, the log goes with the unit. Only after disconnecting the battery do you remove the control unit 77960-3A0-H710-M2. Online you create the repair order, then send in the well-packed unit.

With us the unit is examined on the test bench, defective components are replaced, crash data is erased and a function test is carried out. Processing usually takes 3–4 working days, and this time applies only to checking, repairing and testing at Airbag24.

Afterwards your own unit goes back 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 77960-3A0-H710-M2 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 sends it back to you by UPS.

Enclose the printed repair order in the parcel and pack the unit shockproof.