Airbag control unit with part number 77960-SEA-G816-M1

What does the airbag control unit 77960-SEA-G816-M1 do?

The airbag control unit 77960-SEA-G816-M1 is the central control unit of the restraint system for Honda. It evaluates the crash sensors, decides in an emergency on airbags and seatbelt pretensioners, and monitors the system continuously.

The unit keeps any faults it finds in memory and shows them via the airbag warning light.

After an accident, it creates crash data and locks itself.

Why does the control unit 77960-SEA-G816-M1 fail?

The most common cause with the 77960-SEA-G816-M1 is the storage of crash data after an accident, even without an airbag having deployed. Ordinary diagnostic tools cannot erase it. Further causes are aged electronics, cold solder joints, moisture and corrosion, and voltage spikes.

The crash data remains in memory, regardless of whether an airbag has deployed. Normal reading out cannot remove it, so the finding persists.

Electronics age, solder joints can go cold, and moisture or corrosion at plug connections impairs the contact. Voltage spikes, for example from a jump start or a weak battery, also act on the unit.

Airbag24 erases the crash data during the repair. Which other causes apply is determined by the test.

How can you tell that the 77960-SEA-G816-M1 is defective?

The airbag warning light in the instrument cluster shows the defect in the 77960-SEA-G816-M1 as soon as it lights up permanently or intermittently. In an emergency, the airbags and seatbelt pretensioners may then fail to deploy.

• Fault message in the instrument cluster
• No connection to the diagnostic tool
• Fault memory cannot be cleared

The light is an unmistakable signal. Make sure the system is examined promptly.

The fault memory shows which area is affected.

Which vehicles is the 77960-SEA-G816-M1 fitted in?

The control unit 77960-SEA-G816-M1 is fitted in these vehicles: Honda Accord 7th generation (2002-2008).

The vehicles recorded for this part number are shown in the following overview.

• Honda Accord 7th generation (2002-2008)

Compare the number on the label of the removed unit with this page; this only ensures that you have the right unit. This comparison does not establish the cause. For that, have the fault memory read out beforehand, because it shows whether the control unit or a plug or cable is affected.

For the same vehicles, we also repair control units with the part numbers 77960-SDA-306, 77960-SDN-C211-M1, 77960-SDR-A021-M4.

How does the repair of the 77960-SEA-G816-M1 work?

First have the fault memory read out and enclose the log. Disconnect the battery, and only then remove the control unit 77960-SEA-G816-M1. Create a repair order online and send the unit in well packed.

At Airbag24 the unit is checked, defective components are replaced, stored crash data is erased and a function test follows. Processing usually takes 3–4 working days; this time applies only to this work at Airbag24.

Afterwards, your own 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-SEA-G816-M1 get to Airbag24?

You send the control unit 77960-SEA-G816-M1 as a parcel, or for an extra charge you book a UPS collection. Airbag24 sends it back by UPS after the repair.

The printed repair order goes into the parcel, and the unit is packed shock-proof.