Airbag control unit with part number 77960-SNB-U430-M1

What does the airbag control unit 77960-SNB-U430-M1 do?

The airbag control unit 77960-SNB-U430-M1 is the central control unit of the restraint system (SRS) in Honda. It evaluates the signals from the crash sensors, decides within milliseconds in an accident whether to trigger, and monitors the system continuously.

If the control unit detects a fault, it switches on the airbag warning light. This way you recognise a fault before it becomes relevant in an emergency.

After an accident it stores crash data and locks itself. The lock is only lifted by the repair.

Why does the control unit 77960-SNB-U430-M1 fail?

Stored crash data after an accident is the most common cause, even if no airbag has deployed. Other causes include aged electronics, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data arises even when no airbag is triggered. A normal diagnostic tool cannot erase it, but Airbag24 removes it during the repair.

Aged components, cold solder joints on the circuit board and moisture at plug connections disturb the electronics in different ways.

Voltage spikes also belong here, for example when the battery is weak or a jump-start is carried out.

How can you tell that the 77960-SNB-U430-M1 is defective?

The airbag warning light is on permanently or intermittently, an error message appears in the instrument cluster, the diagnostic tool gets no connection to the control unit, or the fault memory cannot be cleared. In that case, airbags and seatbelt pretensioners may not deploy in an emergency.

A warning in the instrument cluster is not a side issue but the direct message from the system.

A fault memory that cannot be cleared shows that the fault is still stored in the system. Have such findings checked before you rely on the system.

Which vehicles is the 77960-SNB-U430-M1 fitted in?

The 77960-SNB-U430-M1 is fitted in these vehicles: Honda Civic 8th generation (2005-2011).

Below you will see the vehicles stored for this part number.

• Honda Civic 8th generation (2005-2011)

Compare the part number on the label of the removed unit with this page, so that you can be sure you have the correct unit. Have the fault memory read out, because only this result shows whether the control unit itself 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-SNB-U430-M1 work?

You read out the fault memory, disconnect the battery and remove the control unit. Then create a repair order online and send the well-packed unit. Checking, repairing and testing at Airbag24 usually takes 3–4 working days.

The log of the fault memory is enclosed with the unit, and the battery is disconnected before removal.

Airbag24 tests the control unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. Afterwards the unit is returned 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-SNB-U430-M1 get to Airbag24?

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

The printed repair order goes into the parcel. Pack the control unit shock-resistant.