Airbag control unit with part number 77960-T7A-A230-M2

What does the airbag control unit 77960-T7A-A230-M2 do?

The airbag control unit 77960-T7A-A230-M2 is the central unit of the restraint system (SRS) in the Honda. It evaluates the data from the crash sensors, decides within milliseconds in a crash which airbags and seatbelt pretensioners are triggered, and checks the system continuously.

If the unit detects a fault, it shows this via the airbag warning light in the instrument cluster.

If an accident has occurred, the control unit stores crash data and locks itself. The lock only ends with a repair.

Why does the control unit 77960-T7A-A230-M2 fail?

Stored crash data from an accident is the most common cause on the 77960-T7A-A230-M2, even if no airbag has fired. Other possible causes are aged components, cold solder joints, moisture on plug connections and voltage spikes.

Crash data is stored in the unit until it is specifically removed. A normal diagnostic tool cannot do this, which is exactly why Airbag24 carries out this step during the repair.

As for the other causes: electronic components age, solder joints can be cold, moisture causes corrosion on connectors, and excessive voltages from a weak battery or jump-starting stress the unit.

How can you tell that the 77960-T7A-A230-M2 is defective?

The airbag warning light in the instrument cluster lights up on the 77960-T7A-A230-M2 either permanently or intermittently. An error message accompanies it, the connection to the diagnostic tool fails, and the fault memory cannot be cleared. In an emergency, the airbags and seatbelt pretensioners may then fail to deploy.

The light is the direct indication of the system's condition, and you can keep an eye on it at all times.

Even if a connection problem initially seems isolated, have the cause clarified, because the control unit may be the source.

Which vehicles is the 77960-T7A-A230-M2 fitted in?

The 77960-T7A-A230-M2 is fitted in these vehicles: Honda HR-V 2nd generation (2015-2022).

The list shows the vehicles we have recorded for this part number:

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

If the part number on the label of the removed unit matches this page, you have the right unit. The fault memory must still be read out beforehand, however, because only the log shows whether the control unit itself is defective or a connector 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-T7A-A230-M2 work?

During the repair of the 77960-T7A-A230-M2, first have the fault memory read out and attach the log. Then disconnect the battery and only after that remove the control unit. Next, create a repair order online and send the unit in. Processing at Airbag24 normally takes 3–4 working days.

Airbag24 checks the unit on the test bench, repairs defective components, deletes the crash data and runs a function test. Your own unit then goes back to you.

This time refers only to checking, repairing and testing.

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-A230-M2 get to Airbag24?

You send the 77960-T7A-A230-M2 as a package to Airbag24, or you book a UPS collection for an extra charge. The return after the repair is handled by UPS.

Put the printed repair order into the package and pack the unit shock-proof.