Airbag control unit with part number 77960-SLE-N022-M3

What does the airbag control unit 77960-SLE-N022-M3 do?

The airbag control unit 77960-SLE-N022-M3 controls the restraint system (SRS) for Honda. It processes the signals from the crash sensors, determines in a crash within milliseconds which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. After a crash it stores crash data and locks itself.

During operation the control unit continuously checks the sensors, the wiring and the triggers. If it detects a fault, it reports this via the airbag warning light in the instrument cluster.

The lock after a crash is part of the system's design. The unit works closely with the other components of the restraint system.

Why does the control unit 77960-SLE-N022-M3 fail?

The most common cause is stored crash data after an accident, even if no airbag has deployed, and a standard diagnostic tool cannot erase it. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Crash data is therefore the starting point when the unit becomes conspicuous after an accident. During the repair at Airbag24 it is erased.

The other causes tend to develop over time. Electronic components age, solder joints can go cold, and moisture affects plug connections. Voltage spikes in the vehicle electrical system can also harm the electronics, for example from a weak battery.

How can you tell that the 77960-SLE-N022-M3 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, an error message appears in the instrument cluster, the diagnostic tool cannot connect to the control unit, and the fault memory cannot be cleared. Airbags and seatbelt pretensioners may then fail to deploy in an emergency.

Keep an eye on the warning light after switching on the ignition, and on the messages on the display as well. These are the signs that point to a defect.

If the connection to the diagnostic tool fails, the cause must be checked before it is named.

Which vehicles is the 77960-SLE-N022-M3 fitted in?

The airbag control unit 77960-SLE-N022-M3 is fitted in these vehicles: Honda Odyssey 4th generation (2008-2013).

These vehicles are recorded in our data for this part number:

• Honda Odyssey 4th generation (2008-2013)

Compare the part number on the label of the removed unit with this page. This only ensures that it is the correct unit. Have the fault memory read out beforehand, because the log shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 77960-SHJ-A013-M1, 77960-SHJA020M1, 77960-SHJC-012-M1, 77960-TK8-A011-M1.

How does the repair of the 77960-SLE-N022-M3 work?

Processing at Airbag24 usually takes 3–4 working days. Beforehand you read out the fault memory and enclose the log, then you disconnect the battery and only afterwards remove the control unit.

Then you create a repair order online and pack the unit well before sending it in. Airbag24 tests the unit on the test bench, repairs defective components, erases stored crash data and carries out a function test.

Your own unit is then sent back. The processing time covers only the work at Airbag24.

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-SLE-N022-M3 get to Airbag24?

You send in the control unit as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

Put the printed repair order into the parcel and pack the unit shock-proof so that it safely reaches Airbag24.