Airbag control unit with part number 77960-SMT-G110-M1

What does the airbag control unit 77960-SMT-G110-M1 do?

The airbag control unit 77960-SMT-G110-M1 is the central control unit of the restraint system (SRS) on Honda. It processes the signals from the crash sensors and, in an accident, decides within milliseconds which airbags and seatbelt pretensioners to trigger. After an accident, it stores crash data and locks itself.

The control unit monitors the entire system continuously. If it detects a fault, it shows this via the airbag warning light in the instrument cluster.

The unit's work goes unnoticed while driving. In an emergency it controls the restraint devices, and otherwise it keeps watch over the circuits.

Why does the control unit 77960-SMT-G110-M1 fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered; a normal diagnostic tool cannot erase it. Other causes include aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data arises from the impact and remains stored in the unit. Airbag24 erases it as part of the repair.

The other causes are ageing, soldering faults, moisture in the contacts and electrical peaks. They can occur individually or together.

How can you tell that the 77960-SMT-G110-M1 is defective?

A defect shows first on the airbag warning light in the instrument cluster, which lights up permanently or intermittently, and as a fault message in the instrument cluster. In addition, the diagnostic tool makes no contact with the control unit and the fault memory cannot be cleared. Airbags and seatbelt pretensioners may then not trigger in an emergency.

These signs are typical:

• Airbag warning light in the instrument cluster, permanently or intermittently
• Fault message in the instrument cluster
• No connection between the diagnostic tool and the control unit
• Fault memory cannot be cleared

If you notice any of these signs, have the fault memory read out, because only that shows whether the control unit or a cable is affected.

Which vehicles is the 77960-SMT-G110-M1 fitted in?

The control unit 77960-SMT-G110-M1 is fitted in these vehicles: Honda Civic 8th generation (2005-2011). To compare with your vehicle, use make, model and year of manufacture.

The list gives the vehicles with this unit.

• Honda Civic 8th generation (2005-2011)

Compare the part number on the label of the removed unit with this page, which confirms that you have the correct unit. Also have the fault memory read out beforehand. Only the 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-SMG-G014-M1, 77960-SMG-G021-M1, 77960-SMG-G120-M1, 77960-SNA-L220-M1, 77960-SNA-L230-M1, 77960-SNA-M410-M1.

How does the repair of the 77960-SMT-G110-M1 work?

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

The sequence of steps is mandatory for safety reasons.

Airbag24 tests the unit on the test bench, repairs defective components, erases 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-SMT-G110-M1 get to Airbag24?

You send the control unit 77960-SMT-G110-M1 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

Put the printed repair order into the parcel and pack the control unit shock-proof.