Airbag control unit with part number 77960-SWA-G220-M4

What does the airbag control unit 77960-SWA-G220-M4 do?

The 77960-SWA-G220-M4 controls the restraint system (SRS) of Honda. It checks the crash sensors, selects the airbags and seatbelt pretensioners in a crash, and monitors the system continuously. The unit indicates faults via the airbag warning light.

The sensors are evaluated within milliseconds, because a deployment leaves no time for deliberation.

After a crash, the unit stores crash data and locks itself. A repair is the only way to lift the lock.

Why does the control unit 77960-SWA-G220-M4 fail?

The most common cause is crash data after an accident, even if no airbag has deployed. This data cannot be erased with a normal diagnostic tool. Aged components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes are also possible causes.

Whether crash data is stored in the unit cannot be seen from outside.

The other causes relate to the electronics and their connections. Solder joints can go cold, components age, and moisture or corrosion affects the plug contacts.

Voltage spikes, for example from a weak battery or a jump-start, can also cause damage.

How can you tell that the 77960-SWA-G220-M4 is defective?

The airbag warning light in the instrument cluster comes on permanently or intermittently, or a fault message appears in the instrument cluster. In addition, the diagnostic tool fails to connect to the control unit, or the fault memory cannot be cleared. In an emergency, airbags and seatbelt pretensioners may fail to deploy.

When the warning light comes on, it is a message from the system itself and not a guess.

A fault that occurs only intermittently is also worth checking.

Which vehicles is the 77960-SWA-G220-M4 fitted in?

The list shows which vehicles belong to this unit. The 77960-SWA-G220-M4 is fitted in these vehicles: Honda CR-V 3 RE (2006-2012).

These vehicles are known for the part number:

• Honda CR-V 3 RE (2006-2012)

Comparing the part number on the label of the removed unit with this page confirms that it is the correct unit.

Reading out the fault memory beforehand is the next step, because it clarifies 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-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-G220-M4 work?

You have the fault memory read out, enclose the log, and then disconnect the battery before removing the control unit. Afterwards, create the repair order online and send the unit in well packed. Airbag24 checks it, repairs defective components, erases the crash data and tests the unit.

Processing time at Airbag24 is usually 3–4 working days. This covers only the work carried out 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-SWA-G220-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-proof.