Airbag control unit with part number 77960-T5A-X811-M1

What does the airbag control unit 77960-T5A-X811-M1 do?

The airbag control unit 77960-T5A-X811-M1 carries out the evaluation for the SRS restraint system of Honda in the vehicle. It reads the crash sensors, decides in an accident about airbags and seatbelt pretensioners, and checks the system continuously. After an accident it stores crash data and locks itself.

The evaluation takes place within milliseconds and without any action on your part.

A message appears only when the unit detects a fault.

Why does the control unit 77960-T5A-X811-M1 fail?

Stored crash data is the most frequent cause of failure, because after an accident it remains in the unit, even without an airbag triggering; an ordinary diagnostic tool cannot remove it. Other causes include aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

The crash data remains stored in the control unit and cannot be removed with a normal diagnostic tool.

The other causes act on the electronics themselves: solder joints age, and moisture attacks plug connections. Voltage spikes arise, for example, from a weak battery or jump-starting.

How can you tell that the 77960-T5A-X811-M1 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and a fault message appears in the instrument cluster. In addition there is no connection to the diagnostic tool and a fault memory that cannot be erased. These signs mean that airbags and seatbelt pretensioners may not trigger in an emergency.

A fault is therefore indicated by the warning light, and then you should not wait long.

Have the system checked promptly for every finding.

Which vehicles is the 77960-T5A-X811-M1 fitted in?

The control unit 77960-T5A-X811-M1 is fitted in these vehicles: Honda Jazz GK (2013-2023).

Here are the vehicles for this part number:

• Honda Jazz GK (2013-2023)

Compare the part number on the label of the removed unit with this page; then you know that it is the correct unit. Have the fault memory read out beforehand, so that it becomes clear whether the control unit 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-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-X811-M1 work?

First have the fault memory read out and attach the log to the unit. Then disconnect the battery and only afterwards remove the control unit, before creating the repair order online. Then you pack the unit well and send it in; Airbag24 tests it on the test bench, repairs defective components, erases stored crash data and carries out a function test.

For checking, repair and function testing at Airbag24, 3–4 working days are usually allowed.

Afterwards your own unit is 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-T5A-X811-M1 get to Airbag24?

You choose the way to Airbag24 yourself: as a parcel that you send, or with a UPS collection that you book for an extra charge. The return after the repair is made by UPS.

Enclose the repair order in printed form and pad the unit so that it is shock-resistant.