Airbag control unit with part number 77960-SEA-E815-M1

What does the airbag control unit 77960-SEA-E815-M1 do?

In the Honda vehicle the airbag control unit 77960-SEA-E815-M1 takes over control of the restraint system (SRS). It processes the signals from the impact sensors and within fractions of a second determines which airbags and seatbelt pretensioners fire. After an accident it stores crash data and locks itself.

The electronics also continuously check whether sensors, lines and output stages function. Every detected fault is recorded in the fault memory and reported via the airbag warning light.

Why does the control unit 77960-SEA-E815-M1 fail?

The most frequent cause is crash data from an earlier accident, even if no airbag has fired. A normal diagnostic tool cannot remove it. Aged components, cold solder joints, moisture and corrosion on plugs, and voltage spikes in the vehicle electrical system are also considered causes.

The crash data remain in the control unit because it manages them itself. Airbag24 erases them specifically during the repair.

The further causes at a glance:

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes in the vehicle electrical system, for example from a weak battery or jump start

How can you tell that the 77960-SEA-E815-M1 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently. In addition a fault message appears, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared. In this state airbags and seatbelt pretensioners may not trigger in an emergency.

The light is the clearest hint the system gives and is hard to overlook. Have the fault memory checked promptly.

Whether the control unit itself is affected or a wire is behind it only the diagnosis will clarify.

Which vehicles is the 77960-SEA-E815-M1 fitted in?

The control unit 77960-SEA-E815-M1 is found in these vehicles: Honda Accord 7th generation (2002-2008).

The vehicles recorded for this part number are listed here.

• Honda Accord 7th generation (2002-2008)

If the part number on the label of the removed unit matches this page, it is the right unit. It does not clarify a cause.

Have the fault memory read before removal. Then it becomes clear whether the control unit itself is defective or whether a plug or cable is causing the fault.

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-E815-M1 work?

First have the fault memory read and enclose the log. Then disconnect the battery and only then remove the control unit 77960-SEA-E815-M1. Next create the repair order online and send in the unit, well packed.

Airbag24 checks the unit on the test bench, corrects defective components, removes the crash data and tests the function. Your own unit then comes back to you.

Checking, repairing and testing 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-SEA-E815-M1 get to Airbag24?

You send the control unit 77960-SEA-E815-M1 as a parcel or book a UPS collection for an extra charge. Return shipping after the repair is handled by UPS.

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