Airbag control unit with part number 77960-SNA-X623-M1

What does the airbag control unit 77960-SNA-X623-M1 do?

The airbag control unit 77960-SNA-X623-M1 coordinates the restraint system (SRS) in the vehicle for Honda. Sensor signals converge there, and in an accident the unit decides which airbags and seatbelt pretensioners are triggered. In addition, it monitors all components and locks itself after an accident, once crash data has been stored.

Its condition is checked constantly. If it detects a fault, the airbag warning light comes on, and you recognise the condition.

The lock ends only with the repair at Airbag24.

Why does the control unit 77960-SNA-X623-M1 fail?

On the 77960-SNA-X623-M1, crash data stored after an accident is the most common cause, even if no airbag has been triggered. A diagnostic tool does not erase it; Airbag24 removes it in the course of the repair. Aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes may also play a part.

The crash data remains stored in the control unit and cannot be removed by normal means. An attempt to erase it on the vehicle therefore achieves nothing.

The other causes relate to ageing and environmental influences. Electronics age, solder joints can go cold, and moisture attacks the plug contacts. Voltage spikes arise, for example, with a weak battery or when a jump start is connected.

How can you tell that the 77960-SNA-X623-M1 is defective?

A defect shows on the 77960-SNA-X623-M1 through the airbag warning light in the instrument cluster, which stays on permanently or intermittently. In addition, there is a fault message in the instrument cluster, a diagnostic tool without a connection to the control unit, and a fault memory that cannot be cleared.

The light is the first sign you notice in everyday life. If it burns constantly or only now and then, a check is advisable.

In such a state, the airbags and seatbelt pretensioners may not deploy in an emergency. This condition must be taken seriously even if the vehicle behaves inconspicuously.

Which vehicles is the 77960-SNA-X623-M1 fitted in?

This device with the number 77960-SNA-X623-M1 is installed in these vehicles: Honda Civic 8th generation (2005-2011). The information is based on the part number printed on the housing.

The list of vehicles for this part number follows here:

• Honda Civic 8th generation (2005-2011)

First compare the part number on the label of the removed unit with this page; that only establishes that you have the right unit. Also have the fault memory read out before removal, because 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-S02-A840-M3, 77960-SMG-G014-M1.

How does the repair of the 77960-SNA-X623-M1 work?

On the 77960-SNA-X623-M1, the fault memory is read out first, and the log goes with the unit. Only afterwards do you disconnect the battery and remove the control unit. Then you create a repair order online and pack the unit carefully. Checking, repairing and testing at Airbag24 usually take 3–4 working days.

On the test bench, the unit is examined, defective components are repaired and the stored crash data is erased. A function test follows at the end, before your own unit is sent back.

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-SNA-X623-M1 get to Airbag24?

You send the 77960-SNA-X623-M1 to Airbag24 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 returns the unit by UPS.

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