Airbag control unit with part number 77960-SMG-E013-M1

What does the airbag control unit 77960-SMG-E013-M1 do?

The airbag control unit 77960-SMG-E013-M1 is the central control unit of the SRS of Honda. In a crash it evaluates the sensor signals, decides within milliseconds on the deployment of airbags and seatbelt pretensioners, and reports faults to the airbag warning light.

During operation the unit continuously checks whether all connected components are working. After an accident it stores crash data and locks itself; the lock only ends with the repair.

Why does the control unit 77960-SMG-E013-M1 fail?

The most frequent cause is crash data stored after an accident, even if no airbag has deployed, and which a normal diagnostic tool cannot erase. Besides this, aged electronic components, cold solder joints, moisture or corrosion at plug connectors and voltage spikes can cause the failure.

Which cause applies in an individual case only becomes clear when the control unit is analysed. Ageing and cold solder joints affect the internal contacts, while moisture and corrosion attack the connections at the plugs.

During the repair Airbag24 erases the crash data, and the team examines the other causes during the check.

How can you tell that the 77960-SMG-E013-M1 is defective?

Typical signs are an airbag warning light in the instrument cluster that lights up constantly or at times, a fault message in the instrument cluster, and a diagnostic tool that cannot establish a connection with the control unit. A fault memory that cannot be cleared also indicates a problem.

With such signs, airbags and seatbelt pretensioners may fail to deploy in an emergency. The warning light therefore reports the fault itself, and the system is examined next.

Which vehicles is the 77960-SMG-E013-M1 fitted in?

The 77960-SMG-E013-M1 is fitted in these vehicles: Honda Civic 8th generation (2005-2011). Anyone who compares their car with this quickly sees whether the unit fits.

Our records list the following vehicles for this part number:

• Honda Civic 8th generation (2005-2011)

Compare the part number on the label of the removed unit with this page, because that only confirms that it is the correct unit. Have the fault memory read out in advance; only this result shows whether the control unit itself is defective or whether a plug or a 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-E013-M1 work?

First comes reading out the fault memory, whose log is enclosed with the unit. Next, disconnect the battery, and only then remove the control unit. Afterwards you create the repair order online and send the packed unit in.

Airbag24 checks the unit you send on the test bench, repairs defective components, erases stored crash data and carries out a function test. Afterwards your own unit goes back to you.

For testing, repairing and checking at Airbag24, 3–4 working days are usually planned. 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-E013-M1 get to Airbag24?

You send the control unit as a parcel to Airbag24, or you book a UPS collection for an extra charge. After the repair Airbag24 sends it back to you by UPS.

A shock-proof packed unit with the printed repair order in the parcel is the safe way.