Airbag control unit with part number 77960-T7A-H810-M2

What does the airbag control unit 77960-T7A-H810-M2 do?

In an accident, the airbag control unit 77960-T7A-H810-M2 decides within milliseconds which airbags and seatbelt pretensioners are triggered. It belongs to the restraint system (SRS) of Honda and is its central control unit.

The crash sensors continuously supply it with measured values, which it analyses. At the same time it checks the other components, and faults appear via the airbag warning light.

After an accident it saves crash data and locks itself. Only the repair lifts this lock again.

Why does the control unit 77960-T7A-H810-M2 fail?

The most common cause is a crash data record stored after an accident, even if no airbag has deployed. Further causes are ageing components, dry solder joints, moisture and corrosion at plugs, and voltage spikes.

Crash data cannot be removed with a diagnostic tool. Airbag24 erases it during the repair.

• ageing electronic components
• dry solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or a jump start

How can you tell that the 77960-T7A-H810-M2 is defective?

The airbag warning light in the instrument cluster indicates a defect when it stays on permanently or intermittently. Error messages in the instrument cluster, a missing contact between the diagnostic tool and the control unit, and a fault memory that cannot be cleared are further signs. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

The warning light signals that the restraint system has detected a fault and can no longer be considered fully reliable. Clarifying the finding is therefore advisable.

• Airbag warning light on permanently or intermittently
• Error message in the instrument cluster
• Diagnostic tool without connection to the control unit
• Fault memory cannot be cleared

Which vehicles is the 77960-T7A-H810-M2 fitted in?

The control unit 77960-T7A-H810-M2 is fitted in these vehicles: Honda HR-V 2nd generation (2015-2022).

The list of vehicles follows below.

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

Comparing the part number on the label of the removed unit with this page ensures that it is the correct unit. Having the fault memory read out beforehand, on the other hand, shows whether the control unit itself is affected or whether a cable or plug is causing the fault.

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-T7A-H810-M2 work?

You read out the fault memory first, then disconnect the battery and only then remove the control unit. Online you create the repair order and send the unit in. Airbag24 needs 3–4 working days in total for checking, repairing and testing.

Airbag24 checks the unit on the test bench, replaces defective components, erases the crash data and carries out a function test. Then your 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-T7A-H810-M2 get to Airbag24?

The unit is shipped either as a parcel from you or by a UPS collection that you book for an extra charge. The return is made by UPS.

Pack the unit shock-proof and put the printed repair order into the parcel.