Airbag control unit with part number 77960-TR3-H011-M1

What does the airbag control unit 77960-TR3-H011-M1 do?

The airbag control unit 77960-TR3-H011-M1 is the central control unit of the restraint system (SRS) of Honda. It evaluates the signals from the crash sensors, decides within milliseconds in an accident which airbags and seatbelt pretensioners to trigger, and monitors the system continuously. After an accident it stores crash data and locks itself.

It reports faults via the airbag warning light in the instrument cluster, so that drivers can recognise the condition of the system.

The control unit is connected by cable to sensors and triggers, and these connections must work in an emergency.

Why does the control unit 77960-TR3-H011-M1 fail?

The most common cause is crash data that remains stored after an accident, even if no airbag has deployed; a standard diagnostic tool cannot erase it. Aged electronic components, cold solder joints, moisture at plug connectors and voltage spikes are also possible.

The impact places the crash data in the unit, and it stays there until the repair removes it.

The other causes are not related to an accident. Components age, solder joints can become brittle, moisture and corrosion disturb contacts, and voltage spikes occur for example with a weak battery or a jump start.

How can you tell that the 77960-TR3-H011-M1 is defective?

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

Watch out for the following signs:

• Airbag warning light that lights up permanently or intermittently
• Fault message in the instrument cluster
• No connection to the diagnostic tool
• Fault memory that cannot be cleared

If any of these appears, have the system checked promptly.

Which vehicles is the 77960-TR3-H011-M1 fitted in?

The control unit 77960-TR3-H011-M1 is fitted in these vehicles: Honda Civic 9th generation (2011-2017).

The suitable vehicles are listed below.

• Honda Civic 9th generation (2011-2017)

Comparing the part number on the label of the removed unit with this page ensures that you have the right unit. Having the fault memory read out beforehand, however, 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-TR3-H011-M1 work?

Have the fault memory read out and the log enclosed, then disconnect the battery and remove the control unit 77960-TR3-H011-M1. Then create a repair order online and send in the well-packed unit. Processing at Airbag24 takes 3–4 working days as a rule.

Airbag24 checks the unit on the test bench, repairs defective components, erases the stored crash data and carries out a function test. 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-TR3-H011-M1 get to Airbag24?

You send the control unit 77960-TR3-H011-M1 as a parcel or book a UPS collection for an extra charge. After the repair it comes back to you by UPS.

Put the printed repair order in the parcel and pack the unit shockproof.