Airbag control unit with part number 77960-S1A-G93-M1

What does the airbag control unit 77960-S1A-G93-M1 do?

The airbag control unit 77960-S1A-G93-M1 coordinates the restraint system (SRS) for Honda. It reads out the crash sensors and, in an accident, decides within milliseconds on the triggering of airbags and seatbelt pretensioners, and monitors the system continuously for faults.

The unit stores detected faults in its memory and indicates them via the airbag warning light in the instrument cluster. In this way you notice a fault before it becomes relevant in an emergency.

After an accident the control unit writes crash data and locks itself. Only the repair lifts this lock.

Why does the control unit 77960-S1A-G93-M1 fail?

Crash data stored after an accident is the most common cause, even if no airbag has deployed; an ordinary diagnostic tool cannot erase it. Other causes are ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data is not lost but remains in the unit. The system therefore keeps reporting the entry, even if the car then drives without any abnormality. The reading tool alone does not help here.

Besides the crash data, ageing components and damp plug connections come into consideration. Voltage spikes from the on-board electrical system can also play a role, for example with a weak battery. Which cause applies is shown by the check.

How can you tell that the 77960-S1A-G93-M1 is defective?

A defect shows up as an airbag warning light that lights up permanently or intermittently, as an error message in the instrument cluster, as a lack of connection to the diagnostic tool, and as a fault memory that you cannot clear.

As soon as one of these signs appears, airbags and seatbelt pretensioners may fail to deploy in a crash. The lamp is therefore a serious warning signal, not a cosmetic fault.

If you ignore the display, you risk the protective effect being missing. Have the finding checked promptly.

Which vehicles is the 77960-S1A-G93-M1 fitted in?

The 77960-S1A-G93-M1 is fitted in these vehicles: Honda Accord 6th generation (1998-2002).

The list shows the vehicles for which this part number is stored:

• Honda Accord 6th generation (1998-2002)

Compare the part number on the label of the removed unit with this page, so that it is certain that it is the correct unit. Also have the fault memory read out beforehand, because this result decides whether the control unit is defective or whether a plug or cable was the trigger.

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-G93-M1 work?

First have the fault memory read out and enclose the log. Then disconnect the battery, and only afterwards remove the control unit. Create a repair order online and send the unit in well packed.

The sequence matters for your safety: the control unit may only be removed after the battery has been disconnected. Reading out the fault memory therefore always comes before removal.

Airbag24 checks the unit on the test bench, replaces defective components, erases the crash data and carries out a function test. Processing at Airbag24 usually takes 3–4 working days.

The repaired unit of your own is sent back afterwards. 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-G93-M1 get to Airbag24?

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

Put the printed repair order into the parcel. The unit should be packed shock-proof.