Airbag control unit with part number 77960-T90-X210-M1

What does the airbag control unit 77960-T90-X210-M1 do?

The airbag control unit 77960-T90-X210-M1 is the control unit of the restraint system (SRS) in Honda vehicles. It evaluates the crash sensors, determines in a collision which airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

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

If an accident has been registered, the unit stores crash data and locks itself.

Why does the control unit 77960-T90-X210-M1 fail?

The most common cause is crash data from a previous accident, even when no airbag was deployed. Other causes that may come into question are briefly listed below:

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or jump-starting

Crash data is also stored when no airbag has fired, and a standard diagnostic tool cannot erase it.

Which of the other causes applies to your unit will only be shown by the examination at Airbag24.

How can you tell that the 77960-T90-X210-M1 is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently, and an error message may appear in the instrument cluster. If the diagnostic tool cannot connect to the control unit or the fault memory cannot be cleared, that is also a sign. In that case, airbags and seatbelt pretensioners may not deploy in an emergency.

The light is a clear indication that something is wrong with the system.

Even a single warning is reason enough to have the fault memory read out.

Which vehicles is the 77960-T90-X210-M1 fitted in?

You can check here whether your vehicle is affected. The control unit 77960-T90-X210-M1 is fitted in these vehicles: Honda Pilot 4th generation (from 2022).

The following vehicles are listed:

• Honda Pilot 4th generation (from 2022)

Comparing the part number on the label of the removed unit confirms that it is the right unit. It does not confirm whether the unit itself is defective. Only the read-out fault memory can clarify that, because a connector or a cable can also be the cause.

How does the repair of the 77960-T90-X210-M1 work?

You have the fault memory read out and attach the log, then disconnect the battery and only then remove the control unit. Next, you create a repair order online and pack the unit carefully before sending it in. Processing at Airbag24 usually takes 3–4 working days.

On the test bench, Airbag24 examines the unit, defective components are replaced, stored crash data is deleted and a function test is carried out. Your own unit is then returned 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-T90-X210-M1 get to Airbag24?

You send in the control unit as a parcel, or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back by UPS.

The printed repair order goes into the parcel, and you pack the unit shock-proof.