Airbag control unit with part number 77960-T5A-F020-M1

What does the airbag control unit 77960-T5A-F020-M1 do?

The airbag control unit 77960-T5A-F020-M1 is the central control unit of the restraint system (SRS) for Honda. It continuously checks the signals from the crash sensors and, in an accident, triggers the appropriate airbags and seatbelt pretensioners within a fraction of a second.

In the background, the unit constantly checks whether the entire restraint system is functional. Any faults found are passed on via the airbag warning light in the instrument cluster.

After an accident, the control unit stores crash data and locks itself. The lock remains in place until the unit has been repaired.

Why does the control unit 77960-T5A-F020-M1 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. Added to this are ageing electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or a jump start.

Crash data cannot be erased with a normal diagnostic tool. Airbag24 removes it completely during the repair.

Electronic components age over time, and solder joints can lose contact. Moisture and corrosion attack plug connections, while voltage spikes can stress the electronics.

How can you tell that the 77960-T5A-F020-M1 is defective?

A defect shows up through the airbag warning light in the instrument cluster, which lights up permanently or intermittently. Further indications are a fault message in the instrument cluster, no connection to the diagnostic tool and a fault memory that cannot be cleared.

While the light is on, airbags and seatbelt pretensioners may not be able to deploy in an emergency. A lit warning light is therefore a reason to have the fault memory read out promptly.

If the diagnostic tool has no connection, the cause may lie in the electronics or in the wiring. It can only be narrowed down after reading out.

Which vehicles is the 77960-T5A-F020-M1 fitted in?

The 77960-T5A-F020-M1 is fitted in these vehicles: Honda Jazz GK (2013-2023).

These vehicles are recorded for this part number:

• Honda Jazz GK (2013-2023)

The part number on the label of the removed unit can be compared with this page. This only shows that it is the right unit, and the comparison says no more than that.

Have the fault memory read out before removal. The 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-SAA-F911-M1, 77960-SAA-G821-M1.

How does the repair of the 77960-T5A-F020-M1 work?

First have the fault memory read out and attach the log. Then disconnect the battery, remove the control unit, then create a repair order online and send the unit in well packed.

Airbag24 checks the control unit on the test bench, replaces defective components, erases stored crash data and carries out a functional test. Your own unit is then returned.

Processing at Airbag24 usually takes 3–4 working days. This time covers only the checking, repairing and testing in-house, not the steps you take yourself.

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-T5A-F020-M1 get to Airbag24?

You send the device as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

The printed repair order goes in the parcel, and the control unit must be packed shock-proof.