Airbag control unit with part number 77960-SNA-H230-M1

What does the airbag control unit 77960-SNA-H230-M1 do?

The 77960-SNA-H230-M1 is the airbag control unit for the restraint system (SRS) in Honda. It processes the signals from the crash sensors and, in the event of an accident, triggers the designated airbags and seatbelt pretensioners within milliseconds.

During operation it checks the system continuously. If it detects a fault, the airbag warning light in the instrument cluster comes on.

After an accident the unit stores crash data and locks itself.

Why does the control unit 77960-SNA-H230-M1 fail?

On the 77960-SNA-H230-M1, stored crash data from an accident is the most common cause, even if no airbag has deployed. Other causes include ageing components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data stays in the unit because a standard diagnostic tool cannot erase it. At Airbag24 it is deleted as part of the repair.

The other causes concern the electronics, the plug connections and the power supply. A weak battery or a jump start can cause voltage spikes.

How can you tell that the 77960-SNA-H230-M1 is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently as soon as there is a fault on the 77960-SNA-H230-M1. In addition, a message appears in the instrument cluster, the diagnostic tool cannot reach the control unit, and the fault memory remains.

The warning light is one of the most important indicators in the vehicle, because it shows the state of the system directly. A single message should therefore also be taken seriously.

In an emergency, airbags and seatbelt pretensioners may then fail to deploy. Please have the fault checked promptly.

Which vehicles is the 77960-SNA-H230-M1 fitted in?

Honda does not use this control unit in every model range. It is fitted in these vehicles: Honda Civic 8th generation (2005-2011).

The list of vehicles reads:

• Honda Civic 8th generation (2005-2011)

Comparing the part number on the label of the removed unit with this page only ensures that you have the right unit. What causes the defect only becomes clear from the fault memory, which you should have read out before removal. It shows whether the control unit itself or a plug or cable is affected.

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-SNA-H230-M1 work?

First have the fault memory read out and enclose the log, then disconnect the battery. Only then remove the 77960-SNA-H230-M1 and create the repair order online.

Pack the unit carefully and send it in.

Airbag24 tests the unit on the test bench, replaces defective components and deletes stored crash data. A function test follows before your own unit is sent back. Processing usually takes 3–4 working days.

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-H230-M1 get to Airbag24?

Either you send the control unit 77960-SNA-H230-M1 to Airbag24 as a parcel, or you have it collected by UPS for an extra charge. Airbag24 also returns it by UPS after the repair.

The parcel should contain the printed repair order and shock-resistant packaging for the unit.