Airbag control unit with part number 77960-SMR-E011-M1

What does the airbag control unit 77960-SMR-E011-M1 do?

The airbag control unit 77960-SMR-E011-M1 is the central control unit of the SRS for Honda. It monitors the crash sensors, decides in fractions of a second in an accident on the triggering, and reports faults via the airbag warning light.

After an accident, the unit stores crash data and locks itself. The evaluation covers the signals of all connected crash sensors, and the triggering of the seatbelt pretensioners and airbags depends on it.

The unit works in the background as long as the vehicle has power and constantly checks its own condition.

Why does the control unit 77960-SMR-E011-M1 fail?

Stored crash data is the most common cause in the control unit 77960-SMR-E011-M1, even if no airbag has deployed, and a standard diagnostic tool cannot erase it. Other causes include ageing components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes, for example with a weak battery or jump-starting.

Crash data therefore arises even when an accident did not cause any airbag to deploy. The unit creates it itself.

Over time, electronic components age, and solder joints can go cold or break.

How can you tell that the 77960-SMR-E011-M1 is defective?

A defect in the control unit 77960-SMR-E011-M1 shows mainly in the airbag warning light in the instrument cluster. Typical are also error messages in the instrument cluster and a fault memory that cannot be cleared.

The signs in detail:

• The airbag warning light is on permanently or intermittently.
• An error message appears in the instrument cluster.
• A diagnostic tool gets no connection to the control unit.
• The fault memory cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may fail to deploy with such a defect. Take these signs seriously and have the system checked promptly.

Which vehicles is the 77960-SMR-E011-M1 fitted in?

Use this list to check whether the control unit 77960-SMR-E011-M1 matches your vehicle. The airbag control unit 77960-SMR-E011-M1 is fitted in these vehicles: Honda Civic 8th generation (2005-2011).

The vehicles for which this part number is recorded are listed below.

• Honda Civic 8th generation (2005-2011)

First compare the part number on the label of the removed unit with this page, so you know it is the right unit. Also have the fault memory read out, because only the result shows whether the control unit itself 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-SMR-E011-M1 work?

Processing at Airbag24 takes 3–4 working days. You have the fault memory of the 77960-SMR-E011-M1 read out, attach the log, disconnect the battery, and only then remove the control unit before you create a repair order online.

At the test bench, Airbag24 checks the unit, repairs damage to defective components, erases stored crash data and carries out a function test. Finally, your own, now repaired unit is sent 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-SMR-E011-M1 get to Airbag24?

You send the 77960-SMR-E011-M1 as a parcel or have it collected by UPS for an extra charge. The return shipment after the repair is by UPS.

The printed repair order goes into the parcel, and the unit must be packed shockproof.