Airbag control unit with part number 77960-TF0-J413-M3

What does the airbag control unit 77960-TF0-J413-M3 do?

The airbag control unit 77960-TF0-J413-M3 is the central processing unit of the restraint system (SRS) in Honda. The readings from the crash sensors converge there; within milliseconds, it decides on the deployment of airbags and seatbelt pretensioners. It monitors the overall system continuously.

The control unit shows faults via the airbag warning light. After an accident, it creates crash data and locks itself; only the repair lifts this lock.

Why does the control unit 77960-TF0-J413-M3 fail?

The most common cause is crash data from an accident, even without a deployed airbag, which cannot be erased with a normal diagnostic tool. Other causes are aged electronic components, cold solder joints, moisture and corrosion on plug connectors, and voltage spikes, for example from a jump start.

The crash data is removed during the repair.

The other causes lie in ageing, connections or the power supply. Whether any of them applies is shown only by reading out the fault memory.

How can you tell that the 77960-TF0-J413-M3 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and an error message may appear in the instrument cluster. The diagnostic tool may then be unable to connect to the control unit, and the fault memory cannot be cleared.

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

In that case, airbags and seatbelt pretensioners may possibly not trigger in an emergency.

Which cause lies behind it is shown by reading out the fault memory.

Which vehicles is the 77960-TF0-J413-M3 fitted in?

The unit with the part number 77960-TF0-J413-M3 is fitted in these vehicles: Honda Jazz GE (2008-2015). This statement is based on the part number and is not an inspection of your car.

These vehicles are on record for this part number:

• Honda Jazz GE (2008-2015)

Comparing the number on the label of the removed unit with this page helps establish which control unit is the correct one. A comparison says nothing about the cause. Having the fault memory read out beforehand gives the answer as to 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-J413-M3 work?

First, have the fault memory read out and attach the log. Then disconnect the battery and only now remove the control unit. Create the repair order online before sending the well-packed unit in.

At Airbag24, the control unit is examined on the test bench, damaged components are replaced, stored crash data is deleted and a function test is carried out. The processing time at Airbag24 is usually 3–4 working days.

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-J413-M3 get to Airbag24?

You either send the unit as a parcel, or you book a UPS collection for an extra charge. Airbag24 sends it back by UPS after the repair.

Print the repair order and place it in the parcel. Pack the unit shock-proof.