Airbag control unit with part number 77960-T3L-X010-M1

What does the airbag control unit 77960-T3L-X010-M1 do?

The airbag control unit 77960-T3L-X010-M1 is the central control unit of the restraint system (SRS) for Honda. It evaluates the signals from the crash sensors, determines within milliseconds in a crash which airbags and seatbelt pretensioners are to be triggered, and monitors the system continuously.

The unit reports detected faults via the airbag warning light in the instrument cluster. This evaluation runs in the background while the vehicle is being driven.

After an accident, the unit stores crash data and locks itself. Only the repair lifts this lock.

Why does the control unit 77960-T3L-X010-M1 fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. Other causes include aged components, cold solder joints, moisture at plug connections and voltage spikes.

Crash data cannot be cleared with a normal diagnostic tool. Airbag24 removes them during the repair.

Other possible causes are:

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

How can you tell that the 77960-T3L-X010-M1 is defective?

A defect shows itself through an airbag warning light in the instrument cluster that lights up permanently or intermittently, and through an error message in the instrument cluster. In addition, the diagnostic tool cannot establish a connection to the control unit, or the fault memory cannot be cleared.

A diagnostic tool that does not communicate with the control unit indicates a fault. In that case the state of the system cannot be checked, which makes troubleshooting harder.

In an emergency, airbags and seatbelt pretensioners may then fail to deploy. For this reason, do not ignore a lit warning light; have it checked promptly.

Which vehicles is the 77960-T3L-X010-M1 fitted in?

The airbag control unit 77960-T3L-X010-M1 is fitted in these vehicles: Honda Accord 10th generation (2017-2024) and 11th generation (from 2023).

The following vehicles are assigned to this unit:

• Honda Accord 10th generation (2017-2024)
• Honda Accord 11th generation (from 2023)

Comparing the part number on the label of the removed unit with this page only confirms that it is the correct unit. Have the fault memory read out beforehand. Only this 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-SDA-L814-M1, 77960-T3L-A012-M1, 77960-T3L-A01M1.

How does the repair of the 77960-T3L-X010-M1 work?

First have the fault memory read out and attach the log, then disconnect the battery and only then remove the control unit. Next, create the repair order online and send in the well-packed unit. Processing at Airbag24, which covers testing, repairing and checking, usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, replaces defective components, deletes the stored crash data and carries out a function test. Your 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-T3L-X010-M1 get to Airbag24?

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

Include the printed repair order in the parcel, and pack the unit shock-proof.