Airbag control unit with part number 77960-TGG-Z910-M4

What does the airbag control unit 77960-TGG-Z910-M4 do?

The airbag control unit 77960-TGG-Z910-M4 takes over control of the restraint system (SRS) in Honda vehicles. It reads the crash sensors and decides within milliseconds in a crash which airbags and seatbelt pretensioners are triggered.

Continuous monitoring reports faults via the airbag warning light. If a crash occurs, the unit stores crash data and locks itself.

Without an intact control unit, the restraint system would be ineffective in an emergency. The control unit is therefore the core of the protective function.

Why does the control unit 77960-TGG-Z910-M4 fail?

Stored crash data from an accident is the most common cause, even if no airbag has deployed. A normal diagnostic tool cannot erase it. Other causes are aged components, cold solder joints, moisture or corrosion on connectors, and voltage spikes.

Voltage spikes arise, for example, from a weak battery or a jump start and stress the electronics. Moisture and corrosion mainly attack the contacts.

Which cause applies in your case only becomes clear once the fault memory has been read out.

How can you tell that the 77960-TGG-Z910-M4 is defective?

The airbag warning light in the instrument cluster indicates a defect if it stays on permanently or intermittently. Other typical signs are a fault message in the instrument cluster, no connection to the diagnostic tool, and a fault memory that cannot be cleared.

Watch out in particular for these signs:

• The warning light stays on permanently or intermittently.
• A fault message appears in the instrument cluster.
• The diagnostic tool cannot reach the control unit.
• The fault memory cannot be cleared.

If there is a defect, airbags and seatbelt pretensioners may fail to deploy in an emergency. Prompt checking is therefore the right step.

Which vehicles is the 77960-TGG-Z910-M4 fitted in?

This control unit is fitted in the following vehicles: Honda Civic 10th generation (2015-2022).

The breakdown is listed below.

• Honda Civic 10th generation (2015-2022)

Keep the part number from the label of the removed unit next to this page. This only confirms that you have the right unit. The fault memory, on the other hand, decides whether the control unit itself is defective or whether a cable or connector is the cause, so have it read out in advance.

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-Z910-M4 work?

First you have the fault memory read out and enclose the log with the unit. Then you disconnect the battery, remove the control unit and create a repair order online. Then you send in the well-packed unit.

Airbag24 checks the unit on the test bench, repairs defective components, erases stored crash data and carries out a function test. Airbag24 usually needs 3–4 working days for checking, repairing and testing.

Afterwards, your own unit is sent 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-TGG-Z910-M4 get to Airbag24?

You send the unit to Airbag24 as a parcel, or you have it collected by UPS for an extra charge. Airbag24 sends the repaired unit back to you by UPS.

Put the printed repair order into the parcel and pad the control unit shockproof.