Airbag control unit with part number 77960-T7S-Z410-M2

What does the airbag control unit 77960-T7S-Z410-M2 do?

The airbag control unit 77960-T7S-Z410-M2 is the central control unit of the restraint system (SRS) in Honda. It analyses sensor signals and determines in an accident which airbags and seatbelt pretensioners fire within milliseconds.

During operation it checks the components, reports faults via the airbag warning light and stores crash data after an accident. It then locks itself.

The unit works unobtrusively, yet it is indispensable for the safety of the occupants.

Why does the control unit 77960-T7S-Z410-M2 fail?

The control unit 77960-T7S-Z410-M2 most often fails because of crash data stored after an accident, even without a deployed airbag. A normal diagnostic tool cannot remove these entries.

Additionally, ageing components, dry solder joints and moisture at plug connections can cause faults. Voltage spikes, for example from a weak battery or a jump start, are also a possible cause.

Airbag24 removes the crash data during the repair, while the other sources are checked.

How can you tell that the 77960-T7S-Z410-M2 is defective?

A defect in the 77960-T7S-Z410-M2 can show up through the airbag warning light, which stays on constantly or intermittently. In addition, an error message in the instrument cluster, missing communication with the diagnostic tool, or a fault memory that cannot be cleared may occur.

Such findings mean that airbags and seatbelt pretensioners may not trigger in an emergency.

Only a prompt check helps here.

Which vehicles is the 77960-T7S-Z410-M2 fitted in?

The 77960-T7S-Z410-M2 is used in these vehicles: Honda HR-V 2nd generation (2015-2022).

The list of models is shown here:

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

Before removal, compare the part number on the label with this page. Also have the fault memory read out, so that it is clear whether the control unit is defective or whether a cable or a 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-T7S-Z410-M2 work?

Before removal, you read out the fault memory, disconnect the battery and remove the control unit 77960-T7S-Z410-M2. Then you create the repair order online and send the unit in well packed. Airbag24 checks it, replaces defective components, erases the crash data and carries out a function test before your own unit goes back.

The log of the fault memory belongs in the parcel.

At Airbag24, checking, repairing and testing are usually completed within 3–4 working days. 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-T7S-Z410-M2 get to Airbag24?

A parcel, or a UPS collection booked for an extra charge, brings the control unit 77960-T7S-Z410-M2 to Airbag24. After the repair, the unit goes back by UPS.

Print out the repair order and put it into the parcel, then pack the control unit shock-proof.