Airbag control unit with part number 77960-TR0-C010-M4

What does the airbag control unit 77960-TR0-C010-M4 do?

The airbag control unit 77960-TR0-C010-M4 coordinates the restraint system (SRS) in Honda. It evaluates the signals from the crash sensors, decides in a collision within milliseconds how the airbags and seatbelt pretensioners are triggered, and monitors the system continuously. After an accident it stores crash data and locks itself.

The unit reports detected faults to the airbag warning light in the instrument cluster. There, you as the driver see that something is wrong in the restraint system.

Why does the control unit 77960-TR0-C010-M4 fail?

Most often the cause is stored crash data, even if no airbag deployed in the accident. Aged components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes come on top.

A normal diagnostic tool does not delete crash data. Airbag24 removes this data during the repair.

The other causes relate to ageing and environmental influences. Electronics wear out, moisture attacks contacts, and poorly soldered spots can come loose. Voltage spikes also count, for example from a weak battery or after a jump start.

How can you tell that the 77960-TR0-C010-M4 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently as soon as the system detects something. In addition, an error message may appear in the instrument cluster, or the diagnostic tool finds no connection. In an emergency, the airbags and seatbelt pretensioners may then fail to deploy.

Further signs are:

• An error message in the instrument cluster
• No contact between the diagnostic tool and the control unit
• A fault memory that cannot be reset

Which vehicles is the 77960-TR0-C010-M4 fitted in?

The 77960-TR0-C010-M4 is fitted in these Honda vehicles: Honda Civic 9th generation (2011-2017). Check with the list whether your car is included before you start removal.

The affected vehicles at a glance:

• Honda Civic 9th generation (2011-2017)

Compare the part number on the label of the unit with this page, so that you have the correct control unit. Also have the fault memory read out; only this result 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-TR0-C010-M4 work?

Have the fault memory read out first; the log goes into the parcel. Then disconnect the battery, and only afterwards remove the control unit. Next, create the repair order online and pack the unit well. At Airbag24, checking, repair and testing usually take 3–4 working days.

At Airbag24 the unit first goes to the test bench. Then defective components are repaired and stored crash data is deleted, before a function test concludes the process.

Afterwards 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-TR0-C010-M4 get to Airbag24?

You send the control unit as a parcel, or book a UPS collection for an extra charge. The return shipment after the repair is also made by UPS.

The printed repair order goes into the parcel; pack the control unit shock-proof.