Airbag control unit with part number 77960-TV8-J711-M4

What does the airbag control unit 77960-TV8-J711-M4 do?

The airbag control unit 77960-TV8-J711-M4 controls the airbags and seatbelt pretensioners in Honda. In a crash, it decides within milliseconds which of them fire. It also monitors the restraint system continuously and shows faults via the airbag warning light.

Between accidents it works in the background: it checks sensors and wiring and logs any faults it finds.

After an accident, the unit stores crash data and locks itself.

Why does the control unit 77960-TV8-J711-M4 fail?

Most often, the cause is crash data stored after an accident, even if no airbag has deployed. A normal diagnostic tool cannot erase it; Airbag24 removes it during the repair. Aged components, moisture and voltage spikes are also possible causes.

If crash data have been created, registering an event is enough; an airbag does not need to have deployed.

These further causes are also possible:

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

How can you tell that the 77960-TV8-J711-M4 is defective?

The airbag warning light in the instrument cluster stays on permanently or lights up only intermittently, and an error message appears. The diagnostic tool cannot find the control unit, and the fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then fail to deploy.

These signs are easy to notice in everyday driving:

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

Pay particular attention to the light, because it signals every fault it detects.

Which vehicles is the 77960-TV8-J711-M4 fitted in?

The control unit 77960-TV8-J711-M4 is fitted in the following vehicle: Honda Civic 9th generation (2011-2017). Your vehicle documents will show whether this is the one meant.

Here is the assignment to vehicles:

• Honda Civic 9th generation (2011-2017)

Compare the part number on the label of the removed unit with this page; that only confirms it is the right unit. Have the fault memory read out beforehand, because only that shows 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-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-TV8-J711-M4 work?

Processing at Airbag24 usually takes 3–4 working days. Beforehand, have the fault memory read out, enclose the log and disconnect the battery. Only then remove the control unit and create the repair order online. Send in the well-packed unit; Airbag24 checks it on the test bench, replaces defective components, erases the crash data and carries out the function test.

This period covers only the checking, repairing and testing at Airbag24.

After that, your own unit is sent 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-TV8-J711-M4 get to Airbag24?

Whether you choose a parcel or a UPS collection for an extra charge is up to you. The return after the repair is handled by UPS. Print the repair order, put it in the box and pack the unit shockproof.

Knocks in transit can be absorbed with solid packaging.