Airbag control unit with part number 77960-SNA-X023-M1

What does the airbag control unit 77960-SNA-X023-M1 do?

The airbag control unit 77960-SNA-X023-M1 is the central control unit of the restraint system (SRS) of Honda. It evaluates the crash sensors and decides in a crash, within milliseconds, which airbags and seatbelt pretensioners are triggered.

The system monitors the unit continuously, and faults appear on the airbag warning light in the instrument cluster. This makes it visible to the driver when something is wrong.

After an accident, the unit stores crash data and locks itself. This storage also takes place in accidents where no airbag is triggered.

Why does the control unit 77960-SNA-X023-M1 fail?

On the 77960-SNA-X023-M1, stored crash data after an accident is the most common cause of failure, even if no airbag was triggered. It cannot be erased with a standard diagnostic tool.

Airbag24 erases the crash data during the repair. Other causes include ageing electronic components, cold solder joints, and moisture and corrosion at plug connections.

Voltage peaks can also harm the unit, for example when the battery is weak or jump-starting is carried out. Such loads act on the components inside the control unit.

How can you tell that the 77960-SNA-X023-M1 is defective?

The airbag warning light in the instrument cluster lights up on the 77960-SNA-X023-M1 permanently or intermittently, and a fault message appears there. No connection to the diagnostic tool is established, and the fault memory remains.

The light therefore shows the defect directly. Airbags and seatbelt pretensioners may not trigger in an emergency if the unit is defective.

For this reason, every indication deserves a prompt check.

Which vehicles is the 77960-SNA-X023-M1 fitted in?

The control unit 77960-SNA-X023-M1 is fitted in these vehicles: Honda Civic 8th generation (2005-2011). The list serves as a guide for comparison.

These vehicles are assigned to the unit:

• Honda Civic 8th generation (2005-2011)

A comparison of the part number on the label of the removed unit only shows that it is the right unit. Please have the fault memory read out in addition, because only the log clarifies 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-X023-M1 work?

First have the fault memory read out and enclose the log, then disconnect the battery and remove the control unit 77960-SNA-X023-M1. Then create a repair order online and send the unit in well packed. Processing at Airbag24 usually takes 3–4 working days for checking, repairing and testing.

At Airbag24, the unit is checked on the test bench, defective components are replaced, the crash data is erased and a functional test is carried out. Afterwards you get your unit 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-X023-M1 get to Airbag24?

You send the control unit 77960-SNA-X023-M1 to Airbag24 as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

Place the printed repair order in the parcel and pack the unit shockproof.