Airbag control unit with part number 77960-TGG-J310-M4

What does the airbag control unit 77960-TGG-J310-M4 do?

The unit 77960-TGG-J310-M4 manages the restraint system (SRS) in the vehicle of the make Honda. It processes the measurements from the crash sensors, determines in an accident which airbags and seatbelt pretensioners are to be triggered, and monitors the system permanently. It reports faults via the airbag warning light.

The airbag control unit works in the background and checks its surroundings continuously. In a crash it reacts within milliseconds.

After an accident it stores crash data and locks itself.

Why does the control unit 77960-TGG-J310-M4 fail?

The most common cause is that crash data was stored after an accident, even if no airbag has deployed. Other causes are ageing components, cold solder joints, moisture and voltage spikes.

A standard diagnostic tool cannot delete crash data. Further causes include:

• Ageing electronic components
• Cold solder joints
• Moisture and corrosion at plug connections
• Voltage spikes, for example with a weak battery or jump-starting

The fault memory that has been read out shows which of these applies.

How can you tell that the 77960-TGG-J310-M4 is defective?

A defect on the 77960-TGG-J310-M4 shows mainly as the airbag warning light in the instrument cluster. Error messages, a lack of connection to the diagnostic tool and a fault memory that cannot be cleared are added to this.

You should pay attention to these signs:

• airbag warning light on permanently or intermittently
• error message in the instrument cluster
• diagnostic tool without access to the control unit
• fault memory that cannot be cleared

In a defect, seatbelt pretensioners and airbags may not trigger in an emergency. A prompt check establishes whether the system is affected.

Which vehicles is the 77960-TGG-J310-M4 fitted in?

The control unit 77960-TGG-J310-M4 is fitted in these vehicles: Honda Civic 10th generation (2015-2022).

Here follows the list of vehicles recorded for this part number.

• Honda Civic 10th generation (2015-2022)

Comparing the part number on the label of the removed unit with this page shows that you have the correct unit. Have the fault memory read out beforehand, because it 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 77960-3A2-A810-M2, 77960-3A2-A820-M2, 77960-3A2-A830-M2, 77960-TBA-A01, 77960-TBA-A02, 77960-TBA-A03.

How does the repair of the 77960-TGG-J310-M4 work?

First you have the fault memory read out and enclose the log. Then disconnect the battery, only then remove the control unit, and create a repair order online. Checking, repairing and testing at Airbag24 usually take 3–4 working days.

Airbag24 repairs the defective components, deletes stored crash data and carries out a function test. After that your own unit is sent back.

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-TGG-J310-M4 get to Airbag24?

For the control unit 77960-TGG-J310-M4 there are two options: you send it in as a parcel, or you book a UPS collection for an extra charge. After the repair Airbag24 returns the unit by UPS.

Put the printed repair order into the parcel. Pack the unit shock-proof.