Airbag control unit with part number 77960-SMG-G013-M1

What does the airbag control unit 77960-SMG-G013-M1 do?

The airbag control unit 77960-SMG-G013-M1 is the central control unit of the SRS system for Honda. It evaluates the sensor signals, determines in an impact within milliseconds which airbags and seatbelt pretensioners are triggered, and monitors the entire system. It indicates faults via the airbag warning light.

The system operates without interruption for as long as the vehicle is powered. The control unit constantly compares the measured values with one another.

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

Why does the control unit 77960-SMG-G013-M1 fail?

Stored crash data is the most common cause, and this is so even when no airbag has been triggered. This data cannot be erased with a normal diagnostic tool. Other causes include aged electronic components, cold solder joints, moisture and corrosion on plug connectors, and voltage spikes, for example from a weak battery or a jump start.

Crash data is created regardless of whether an airbag actually triggers. An impact without triggering can therefore still leave traces in the memory.

The other causes lie in the electronics themselves. Components age, solder joints lose their firmness, and moisture attacks the contacts. Voltage spikes also add to the stress.

How can you tell that the 77960-SMG-G013-M1 is defective?

The airbag warning light in the instrument cluster indicates the fault by lighting up permanently or intermittently. An error message may also appear in the instrument cluster, or the diagnostic tool cannot find the control unit. Then airbags and seatbelt pretensioners may possibly fail to trigger in an emergency.

A defect is therefore indicated not only by the light, but also by the error message and the disturbed communication with the diagnostic tool. The light alone does not tell you which component is affected.

Only the read-out shows whether the control unit itself is affected or a cable is the cause. Until then, it is worth keeping an eye on the display.

Which vehicles is the 77960-SMG-G013-M1 fitted in?

The control unit 77960-SMG-G013-M1 is fitted in these vehicles: Honda Civic 8th generation (2005-2011). What matters is whether the part number is recorded for your own vehicle.

The list of recorded vehicles follows here.

• Honda Civic 8th generation (2005-2011)

First check the label of the removed unit against this page. This only confirms that you have the right unit in front of you. The fault memory must be read out beforehand, because only this log shows whether the control unit is defective or 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-SMG-G013-M1 work?

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

The fault memory is read out before removal, so that the log is enclosed with the unit. Only after that do you disconnect the battery and detach the control unit from the vehicle.

At Airbag24, the unit goes on the test bench. Defective components are replaced, crash data stored in the unit is erased, and a functional test completes the repair. Your own unit then goes 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-SMG-G013-M1 get to Airbag24?

You arrange the route to Airbag24 yourself by parcel or through a UPS collection for an extra charge. The unit returns to you by UPS once Airbag24 has repaired it.

Include the printed repair order in the package, and protect the unit with shock-resistant packaging.