Airbag control unit with part number 77960-T70-H310-M1

What does the airbag control unit 77960-T70-H310-M1 do?

The airbag control unit 77960-T70-H310-M1 coordinates the restraint system in vehicles of the make Honda. It evaluates the signals from the crash sensors and, in a crash, decides within milliseconds which airbags and seatbelt pretensioners are triggered. It also constantly monitors the system and reports faults.

The unit shows faults via the airbag warning light in the instrument cluster. After a crash it stores crash data and locks itself.

Why does the control unit 77960-T70-H310-M1 fail?

Stored crash data is the most common cause, even when no airbag has deployed. A standard diagnostic tool cannot erase this data. Other causes are aged components, moisture at connectors and voltage spikes.

The data remains in the memory until someone removes it during the repair.

• Ageing of the electronics
• cold or faulty solder joints
• moisture and corrosion in plug connections
• voltage spikes, for example with a weak battery

How can you tell that the 77960-T70-H310-M1 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, which is a clear signal. Added to this are fault messages, a missing connection to the diagnostic tool and a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

The message appears directly in the instrument cluster.

Whether the cause is the control unit or the wiring can only be answered by reading out the fault memory.

Which vehicles is the 77960-T70-H310-M1 fitted in?

This unit 77960-T70-H310-M1 is used by the make Honda. It is fitted in these vehicles: Honda HR-V 2nd generation (2015-2022).

You can find the vehicles listed here:

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

First compare the number on the label of the removed unit with this page. That shows whether you have the right unit. Having the fault memory read out gives the actual answer as to whether the control unit is defective or whether plugs and cables are 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-T70-H310-M1 work?

You have the fault memory read out first as preparation, and the log belongs in the parcel. Then you disconnect the battery, and only after that is the control unit removed. Online you create the repair order before you pack the unit. Airbag24 generally needs 3–4 working days for this work.

At Airbag24 the unit is checked, components are replaced if necessary, crash data is removed and a functional test is carried out. Afterwards your own unit is returned.

The sequence on the vehicle protects you, which is why it is binding.

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-T70-H310-M1 get to Airbag24?

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

The repair order should be printed out and placed in the box, and the unit must be packed shock-proof.