Airbag control unit with part number 77960-TV0-F010-M4

What does the airbag control unit 77960-TV0-F010-M4 do?

The airbag control unit 77960-TV0-F010-M4 is the central switching unit of the restraint system (SRS) for Honda. It checks the crash sensors, determines in a crash within milliseconds which airbags and seatbelt pretensioners to trigger, and monitors the system continuously. It shows detected faults via the airbag warning light.

This check happens in the background while the vehicle is on the move. Signals are checked for plausibility during this process, so that deviations are noticed in good time.

After a crash, the control unit creates crash data and locks itself.

Why does the control unit 77960-TV0-F010-M4 fail?

Stored crash data is the most common cause, even if no airbag has deployed in an incident; an ordinary diagnostic tool cannot remove it. Further causes are aged electronic components, cold solder joints, moisture and corrosion on plug connectors, and voltage spikes.

Crash data originates from the crash event and remains stored in the unit after the incident.

The other causes lie in the electronics themselves. Components age, solder joints can stay cold, and moisture attacks plug connectors. Voltage spikes, for example from a weak battery or a jump start, add further strain on the unit.

How can you tell that the 77960-TV0-F010-M4 is defective?

Typical signs are the airbag warning light, fault messages in the instrument cluster and connection problems with the diagnostic tool. In that case, airbags and seatbelt pretensioners may fail to trigger in an emergency.

• Airbag warning light in the instrument cluster stays on permanently
• Airbag warning light only lights up intermittently
• Fault message in the instrument cluster
• Diagnostic tool finds no connection to the control unit
• Fault memory cannot be cleared

Even one of these signs justifies a check. Only the read-out fault memory shows whether the control unit itself is affected.

Which vehicles is the 77960-TV0-F010-M4 fitted in?

The control unit 77960-TV0-F010-M4 is fitted in these vehicles: Honda Civic 9th generation (2011-2017). What matters is that your vehicle is listed under this part number.

The overview below shows the stored vehicles.

• Honda Civic 9th generation (2011-2017)

Compare the part number on the label of the removed unit with this page so that you have the correct unit. Also have the fault memory read out: it shows whether the control unit is defective or whether a plug or cable is causing the problem.

For the same vehicles, we also repair control units with the part numbers 77960-TS4-U411-M1, 77960-TS4-U811-M2, 77960-TS4-Z611-M1, 77960-TS6-H711-M1, 77960-TT0-T011-M1, 77960-TT0-Y610-M2.

How does the repair of the 77960-TV0-F010-M4 work?

First read out the fault memory and attach the log, then disconnect the battery and only then remove the control unit. Then create the repair order online and send the unit in well packed. Processing at Airbag24 takes 3–4 working days as a rule.

You only remove the unit after disconnecting the battery as a matter of principle. Pack the unit afterwards so that it survives transport safely.

At Airbag24, the unit is tested on the test bench. Airbag24 then replaces defective components, deletes stored crash data and carries out a function test. After that, 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-TV0-F010-M4 get to Airbag24?

On its way to Airbag24, the unit travels either in a parcel that you send yourself or with a UPS collection that you book for an extra charge. The return shipment is likewise handled by UPS.

Pack the control unit in shock-resistant packaging and enclose the printed repair order.