Airbag control unit with part number 77960-SJA-G113-M2

What does the airbag control unit 77960-SJA-G113-M2 do?

The 77960-SJA-G113-M2 is the control unit of the SRS system for Honda. It checks the messages from the crash sensors, determines in an accident within fractions of a second which airbags and seatbelt pretensioners fire, and keeps an eye on the system.

It reports faults via the airbag warning light in the instrument cluster. After an accident it stores crash data and then locks itself.

Without this control unit, the sensors would have no effect on the airbags.

Why does the control unit 77960-SJA-G113-M2 fail?

With the 77960-SJA-G113-M2, the most common cause is crash data stored after an accident, even if no airbag was triggered; a normal diagnostic tool cannot make it disappear. Further causes lie in ageing and electrical weak points.

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example with a weak battery or a jump start

Airbag24 removes the crash data during the repair. You do not need to do anything for this.

How can you tell that the 77960-SJA-G113-M2 is defective?

On the 77960-SJA-G113-M2, the airbag warning light in the instrument cluster stays on permanently or intermittently, an error message appears in the instrument cluster, and the diagnostic tool finds no connection to the control unit. A fault memory that cannot be cleared is a further sign.

Do not ignore such signs, because in an emergency airbags and seatbelt pretensioners may not trigger.

Which cause lies behind them is shown by a readout of the fault memory. The fault does not necessarily lie in the control unit; a connector or a cable can also be responsible.

Which vehicles is the 77960-SJA-G113-M2 fitted in?

The control unit 77960-SJA-G113-M2 is fitted in these vehicles: Honda Legend 4th generation (2004-2012).

The vehicles assigned to this part number are listed below:

• Honda Legend 4th generation (2004-2012)

Compare the part number on the label of the removed unit with this page, so that you are sure you have the right unit. Also have the fault memory read out, because only this log shows whether the control unit itself is defective or whether a connector or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 77960-S3V-C11, 77960-SJV-A94, 77960-SWV-A94.

How does the repair of the 77960-SJA-G113-M2 work?

For the 77960-SJA-G113-M2, have the fault memory read out, attach the log and disconnect the battery. Only then do you remove the control unit. Afterwards you create the repair order online and send in the well-packed unit. Airbag24 checks it on the test bench, replaces defective components, erases the crash data and carries out a function test.

The order when removing the unit is binding, because it serves safety.

Processing at Airbag24 usually takes 3–4 working days. Afterwards your own unit goes back 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-SJA-G113-M2 get to Airbag24?

You send the 77960-SJA-G113-M2 to Airbag24 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back to you by UPS.

Enclose the printed repair order and pack the unit shock-proof.