Airbag control unit with part number 77960-T2A-S750-M1

What does the airbag control unit 77960-T2A-S750-M1 do?

The airbag control unit 77960-T2A-S750-M1 is the central control unit of the restraint system (SRS) in Honda vehicles. It evaluates the crash sensors, decides in an accident on the deployment of airbags and seatbelt pretensioners, and monitors the system continuously.

If the unit detects a fault, the airbag warning light comes on. After an accident, it stores crash data and locks itself.

Why does the control unit 77960-T2A-S750-M1 fail?

Stored crash data is most often the cause, even if no airbag has deployed. Airbag24 deletes it during the repair; a standard diagnostic tool cannot do this. Other possible causes are ageing components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

After an accident, the control unit stores the crash data in its memory, and it stays there until the repair deletes it.

The other causes relate to ageing and the environment: components wear out, moisture attacks contacts, and solder joints can go cold.

Voltage spikes, for example from a weak battery or when jump-starting, can also strain the electronics.

How can you tell that the 77960-T2A-S750-M1 is defective?

The airbag warning light in the instrument cluster indicates a defect on the 77960-T2A-S750-M1 by lighting up permanently or intermittently. An error message in the instrument cluster, a missing connection to the diagnostic tool and a fault memory that cannot be cleared may come with it. In an emergency, the airbags and seatbelt pretensioners may then fail to deploy.

The light shows the finding directly, so you should react promptly.

Which vehicles is the 77960-T2A-S750-M1 fitted in?

The 77960-T2A-S750-M1 is fitted in these vehicles: Honda CR-V 4 RM (2012-2018). The safest way to check whether your own car is affected is the part number on the removed unit.

The vehicle list:

• Honda CR-V 4 RM (2012-2018)

Compare the part number on the label with this page; that way you know you have the right unit. Have the fault memory read out beforehand, because only that result shows whether the control unit itself is defective or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 77960-T0A-3070-M4, 77960-T0A-A012-M1, 77960-T0A-A013-M1, 77960-T0A-A210-M1, 77960-T0A-A212-M1, 77960-T0A-A230-M1.

How does the repair of the 77960-T2A-S750-M1 work?

Have the fault memory read out and enclose the log. Then disconnect the battery and remove the control unit. Next, create a repair order online and send the well-packed 77960-T2A-S750-M1. Airbag24 expects 3–4 working days as a rule for testing, repair and function test.

On the test bench, Airbag24 examines the unit, repairs defective components, deletes stored crash data and carries out a function test. Then your own unit comes 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-T2A-S750-M1 get to Airbag24?

You send the unit as a parcel with the 77960-T2A-S750-M1, or you book a UPS collection for an extra charge. The return after repair is also made by UPS.

Print the repair order and put it into the parcel. The control unit should be packed shockproof.