Airbag control unit with part number 77960-T5A-X410-M1

What does the airbag control unit 77960-T5A-X410-M1 do?

The unit 77960-T5A-X410-M1 manages the restraint system (SRS) in vehicles of the make Honda. It processes the measurements from the crash sensors, determines in an accident which airbags and seatbelt pretensioners are to be triggered, and monitors the system permanently. It reports faults via the airbag warning light.

The airbag control unit works in the background and checks its surroundings continuously. In a crash it reacts within milliseconds, and this applies to every activation of the system.

After an accident it stores crash data and locks itself.

Why does the control unit 77960-T5A-X410-M1 fail?

The most common cause is that crash data was stored after an accident, even if no airbag has deployed. Other causes lie in the electronics themselves and their connections, such as ageing, moisture or voltage spikes.

The stored crash data cannot be deleted with a standard diagnostic tool. As a result the fault remains in the unit until the unit is repaired and the data is cleared there.

The other causes at a glance:

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

How can you tell that the 77960-T5A-X410-M1 is defective?

A defect on the 77960-T5A-X410-M1 shows mainly as the airbag warning light in the instrument cluster. This may be accompanied by error messages, a lack of connection to the diagnostic tool and a fault memory that cannot be cleared.

You should pay attention to these signs in particular:

• airbag warning light, permanently or intermittently on
• error message in the instrument cluster
• diagnostic tool without access to the control unit
• fault memory that cannot be cleared

In the event of a defect, seatbelt pretensioners and airbags may not trigger in an emergency. A prompt check will establish whether the system is affected.

Which vehicles is the 77960-T5A-X410-M1 fitted in?

The control unit 77960-T5A-X410-M1 is fitted in these vehicles: Honda Jazz GK (2013-2023).

Here follows the list of vehicles recorded for this part number.

• Honda Jazz GK (2013-2023)

Comparing the part number on the label of the removed unit with this page shows that it is the correct unit. However, whether the control unit itself is defective can only be established using the fault memory read out beforehand, because a plug or a cable may also cause the fault.

For the same vehicles, we also repair control units with the part numbers 77960-T5A-A212-M1, 77960-T5A-E010-M1, 77960-T5A-E011-M1, 77960-T5A-E020-M1, 77960-T5A-F010-M1, 77960-T5A-F011-M1.

How does the repair of the 77960-T5A-X410-M1 work?

You first have the fault memory read out and enclose the log. Then you disconnect the battery and only then remove the control unit. Next, you create a repair order online. Testing, repair and function test at Airbag24 usually take 3–4 working days.

Airbag24 examines the unit you send in on the test bench, repairs the defective components, deletes stored crash data and carries out a function test.

After that, your own unit is sent back.

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-X410-M1 get to Airbag24?

For the control unit 77960-T5A-X410-M1 there are two options: you send it in as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 returns the unit by UPS.

The printed repair order belongs in the parcel. Pack the unit shock-proof.