Airbag control unit with part number 77960-T0A-T410-M3

What does the airbag control unit 77960-T0A-T410-M3 do?

In the Honda, the airbag control unit 77960-T0A-T410-M3 manages the restraint system (SRS). It checks the crash sensors, decides in an accident whether airbags and seatbelt pretensioners are triggered, and monitors the system at all times. After an accident, it stores crash data and locks itself.

It reports faults to the airbag warning light in the instrument cluster, so that the state of the system remains readable.

In an emergency, the unit has to make the right decision within a very short time, and for that it needs constant self-checking.

Why does the control unit 77960-T0A-T410-M3 fail?

Stored crash data is the most common cause, even if no airbag has deployed; a standard diagnostic tool does not erase it. Other causes include ageing electronics, cold solder joints, moisture and corrosion at plugs, and voltage spikes, for example from a weak battery or a jump start.

Crash data remains in the memory after an event. At Airbag24, the repair removes it.

Ageing components and cold solder joints can lead to intermittent faults that are hard to pin down.

Moisture and corrosion disrupt the contact at the plug connections, and voltage spikes place additional strain on the electronics.

How can you tell that the 77960-T0A-T410-M3 is defective?

A defect shows itself through the airbag warning light, which stays on permanently or intermittently, through a fault message in the instrument cluster, through a lack of contact with the diagnostic tool, or through a fault memory that cannot be cleared. In an emergency, airbags and seatbelt pretensioners may then not be able to deploy.

The airbag warning light in the instrument cluster is the most visible of these signs. It shows the finding directly.

The fault message and the lack of contact with the diagnostic tool complete this picture. A fault memory that cannot be cleared confirms the situation.

Which vehicles is the 77960-T0A-T410-M3 fitted in?

The 77960-T0A-T410-M3 is fitted in these vehicles: Honda CR-V 4 RM (2012-2018).

These vehicles are recorded in the data for this part number:

• Honda CR-V 4 RM (2012-2018)

Comparing the part number on the label of the removed control unit with this page only ensures that it is the right unit. Have the fault memory read out beforehand: only this result shows whether the control unit itself or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 5WK43782, 77960-SWA-G212-M4, 77960-SWA-G214-M4, 77960-T1G-G920-M4.

How does the repair of the 77960-T0A-T410-M3 work?

First read out the fault memory, enclose the log with the unit, then disconnect the battery and remove the control unit. Then create a repair order online. Airbag24 usually needs 3–4 working days for testing, repairing and checking.

The sequence is mandatory for safety reasons.

At Airbag24, the control unit is checked on the test bench, defective components are replaced, the crash data is erased and a function test is carried out. Your own unit then comes 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-T0A-T410-M3 get to Airbag24?

The unit goes to Airbag24 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

Print out the repair order and enclose it. Pack the unit shockproof.