Airbag control unit with part number 77960-TF0-J431-M3

What does the airbag control unit 77960-TF0-J431-M3 do?

The airbag control unit 77960-TF0-J431-M3 is the central control unit of the restraint system (SRS) of Honda. It evaluates the crash sensors, decides in an accident within milliseconds about airbags and seatbelt pretensioners, and monitors the system continuously. Faults are reported via the airbag warning light, and after an accident it stores crash data and locks itself.

During driving, the electronics continue to work unobtrusively. You only notice them when something is wrong.

Why does the control unit 77960-TF0-J431-M3 fail?

Stored crash data after an accident is the most common cause, even if no airbag has deployed. Other possible causes include ageing components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes.

This crash data cannot be erased with a normal diagnostic tool. Airbag24 erases it as part of the repair.

The other causes are related to ageing, moisture or electrical stress. A weak battery or connecting jump leads generates voltage spikes.

How can you tell that the 77960-TF0-J431-M3 is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently. In addition, a fault message appears, the diagnostic tool gets no connection to the control unit, and the fault memory cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may then fail to trigger. Therefore have the finding checked promptly.

Which vehicles is the 77960-TF0-J431-M3 fitted in?

The control unit 77960-TF0-J431-M3 is fitted in these vehicles: Honda Jazz GE (2008-2015). Your vehicle registration document shows whether your car is part of this list.

The vehicles at a glance:

• Honda Jazz GE (2008-2015)

First compare the part number on the label of the removed unit with this page, so that you know you have the right unit. Also have the fault memory read out before removal. Only the log shows whether the control unit is defective or whether a plug or a 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-J431-M3 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only afterwards remove the control unit. Next create a repair order online and pack the unit well before you send it in. Airbag24 checks it, repairs defective components, erases the crash data and carries out a function test.

Processing at Airbag24 usually takes 3–4 working days. Afterwards the 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-J431-M3 get to Airbag24?

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

The printed repair order goes into the parcel, and the unit must be packed shock-proof.