Airbag control unit with part number 77960-S1A-G81-M1

What does the airbag control unit 77960-S1A-G81-M1 do?

The airbag control unit 77960-S1A-G81-M1 is the central control unit of the SRS for Honda. It evaluates the crash sensors, determines in an accident within milliseconds which airbags and seatbelt pretensioners fire, and monitors the system constantly. It shows faults via the airbag warning light in the instrument cluster.

The sensors are evaluated continuously, so the system is ready for operation at all times. After an accident the control unit stores crash data and then locks itself.

Why does the control unit 77960-S1A-G81-M1 fail?

The most common cause is stored crash data after an accident, even if no airbag has deployed; an ordinary diagnostic tool does not erase it. Further possible causes in brief: aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

The crash data remains until it is removed during the repair. Airbag24 takes on this erasure as part of the repair. The other causes are identified only during the inspection.

• Aged electronic components
• Cold solder joints
• Moisture and corrosion at plug connections
• Voltage spikes, for example from a weak battery or a jump start

How can you tell that the 77960-S1A-G81-M1 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and an error message appears in the instrument cluster. The diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared.

If these signs appear, have the system checked, because in an emergency the airbags and seatbelt pretensioners may possibly not deploy. The warning light is exactly there to alert you to a fault.

Which vehicles is the 77960-S1A-G81-M1 fitted in?

The control unit 77960-S1A-G81-M1 is fitted in these vehicles: Honda Accord 6th generation (1998-2002).

For orientation, here is the list of vehicles:

• Honda Accord 6th generation (1998-2002)

Comparing the part number on the label of the removed unit with this page only confirms the matching unit. Whether the control unit itself is the cause is shown only by a fault memory read out beforehand, which also reveals whether a plug or a cable is affected.

For the same vehicles, we also repair control units with the part numbers 77960-SEA-G815-M1, C0W6K4VDA.

How does the repair of the 77960-S1A-G81-M1 work?

First have the fault memory read out and enclose the log. Then disconnect the battery before you remove the control unit. Afterwards create the repair order online and pack the unit well for sending.

At Airbag24 the unit is checked, defective components are replaced and stored crash data is erased. A functional test follows, after which your own unit is sent back. Processing at Airbag24 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-S1A-G81-M1 get to Airbag24?

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

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