Airbag control unit with part number 77960-TR0-A013-M1

What does the airbag control unit 77960-TR0-A013-M1 do?

The airbag control unit 77960-TR0-A013-M1 runs the restraint system (SRS) in Honda. It evaluates the crash sensors, decides within milliseconds which airbags and seatbelt pretensioners to deploy in an accident, and monitors the system continuously. After an accident it stores crash data and locks itself.

Faults are reported via the airbag warning light in the instrument cluster.

Monitoring takes place without any action on your part; in normal operation you will not notice it.

Why does the control unit 77960-TR0-A013-M1 fail?

Crash data from an earlier accident, even one without an airbag deployment, is the most common cause; a standard diagnostic tool cannot erase it. With this control unit, erasing the crash data is often not possible. If you want it erased, contact Airbag24 briefly before sending the unit in. Further causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data also remains in the memory if no seatbelt pretensioner fired in the accident.

Aged components can become unreliable after long use. Cold solder joints, in turn, cause contact interruptions that occur only intermittently.

Moisture and corrosion on plugs increase the resistance, and voltage spikes, for example from a weak battery, put additional strain on the electronics.

How can you tell that the 77960-TR0-A013-M1 is defective?

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

The light stays on for a permanent fault, and for an intermittent fault it goes out again. A light that comes on only intermittently is therefore no reason to relax.

A diagnostic tool without a connection also points to a fault, which may lie in the control unit, but equally in a cable or a plug.

Which vehicles is the 77960-TR0-A013-M1 fitted in?

The control unit 77960-TR0-A013-M1 is fitted in these vehicles: Honda Civic 9th generation (2011-2017).

The following shows the vehicles for which we have data on this part number.

• Honda Civic 9th generation (2011-2017)

Comparing the part number on the label with this page confirms that you have the right unit. Whether the control unit is actually defective is shown only by the fault memory read out in advance, because it distinguishes control unit, plug and cable as 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-A013-M1 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 send the unit in well packed.

At Airbag24 the unit is checked on the test bench, worn parts are replaced where necessary, the crash data is erased and a functional test is run. The processing usually takes 3–4 working days.

If you want the crash data erased, contact Airbag24 briefly before sending the unit in. At the end your own unit comes 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-TR0-A013-M1 get to Airbag24?

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

The printed repair order goes in the parcel, and the control unit is padded shock-resistant.