Airbag control unit with part number 77960-TF0-M510-M3

What does the airbag control unit 77960-TF0-M510-M3 do?

The airbag control unit 77960-TF0-M510-M3 is the control unit of the restraint system (SRS) in Honda vehicles. It processes the signals from the crash sensors, selects within milliseconds the airbags and seatbelt pretensioners to be triggered in an accident, and monitors the entire system. Faults found are reported via the airbag warning light.

After a crash the unit stores crash data and locks itself. In doing so it also takes on the role of an event log.

Why does the control unit 77960-TF0-M510-M3 fail?

The most common cause on the 77960-TF0-M510-M3 is crash data stored after an accident, even if no airbag was deployed at all. Ageing components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes are also involved.

You cannot erase crash data with a normal diagnostic tool; Airbag24 takes care of that during the repair. The other triggers are:

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

How can you tell that the 77960-TF0-M510-M3 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently as soon as there is a fault on the 77960-TF0-M510-M3. At the same time an error message may appear in the instrument cluster.

In an emergency, airbags and seatbelt pretensioners may then not deploy. Further signs:

• The diagnostic tool receives no connection to the control unit
• The fault memory cannot be cleared

Which vehicles is the 77960-TF0-M510-M3 fitted in?

Compare your vehicle with the overview before removing the control unit. The control unit 77960-TF0-M510-M3 is fitted in these vehicles: Honda Jazz GE (2008-2015).

The overview in detail:

• Honda Jazz GE (2008-2015)

Comparing the part number on the label of the removed unit with this page shows that the unit fits. Additionally have the fault memory read out beforehand, because only it shows whether the control unit is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 5WK43461, 77960-SAA-G821-M1, 77960-SEG-G821-M1, 77960-TF0-G820-M3, 77960-TF0-G821.

How does the repair of the 77960-TF0-M510-M3 work?

First have the fault memory read out, then disconnect the battery and only then remove the control unit 77960-TF0-M510-M3. Only after that create a repair order online. Processing at Airbag24 usually takes 3–4 working days.

The log of the fault memory belongs to the order. The sequence is for safety reasons fixed and not negotiable.

At Airbag24 the unit is checked on the test bench, defective components are repaired or replaced where necessary, the stored crash data is erased and a function test is carried out. Then your own unit goes back 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-TF0-M510-M3 get to Airbag24?

You send your 77960-TF0-M510-M3 as a parcel or book a UPS collection for an extra charge. After the repair the unit comes back by UPS.

Enclose the printed repair order; the unit gets shock-proof packaging.