Airbag control unit with part number 77960-SWA-G213-M4

What does the airbag control unit 77960-SWA-G213-M4 do?

The airbag control unit 77960-SWA-G213-M4 is the central control unit of the restraint system (SRS) for Honda. It evaluates the crash sensors, decides in a crash within milliseconds whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

If a fault is detected, the control unit shows it via the airbag warning light in the instrument cluster. The electronics check both the sensors and the activation of the airbags and seatbelt pretensioners. The system works in the background, without you noticing anything in everyday driving.

After a crash, the unit stores crash data and locks itself.

Why does the control unit 77960-SWA-G213-M4 fail?

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

Airbag24 erases the crash data as part of the repair, so that it no longer remains in the unit afterwards.

The other causes develop more gradually. Components lose reliability over the years, and moisture finds its way into the plugs. Voltage spikes arise, for example, from a weak battery or from connecting a jump start.

How can you tell that the 77960-SWA-G213-M4 is defective?

The airbag warning light in the instrument cluster stays on continuously or intermittently, an error message appears in the instrument cluster, the diagnostic tool gets no connection to the control unit, and the fault memory cannot be cleared.

If these signs appear, the airbags and seatbelt pretensioners may not deploy in an emergency. This also applies if the vehicle seems completely unremarkable in everyday use.

If you see the warning light, have the system checked promptly, because the light is the direct warning from the control unit itself.

Which vehicles is the 77960-SWA-G213-M4 fitted in?

The 77960-SWA-G213-M4 is fitted in these vehicles: Honda CR-V 3 RE (2006-2012).

The vehicles in detail:

• Honda CR-V 3 RE (2006-2012)

First compare the part number on the label of the removed unit with this page. That only ensures that you have the correct unit in front of you. Also have the fault memory read out before you do anything to the control unit. Only the 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-SWA-G214-M4, 77960-SWA-S21, 77960-SWA-S214-M4, 77960-T0AA-110-M1, 77960-TA0-A031, 77960-TLA-A25.

How does the repair of the 77960-SWA-G213-M4 work?

First you read out the fault memory and attach the log. Then you disconnect the battery and only afterwards remove the control unit. Next you create a repair order online and send the unit in well packed.

Airbag24 checks the unit on the test bench, repairs defective components, erases the stored crash data and carries out a function test. Processing at Airbag24 usually takes 3–4 working days, and this period covers only checking, repairing and testing. Afterwards the 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-SWA-G213-M4 get to Airbag24?

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

Put the printed repair order into the parcel and pack the unit shock-resistant, so that it is protected in transit.