Airbag control unit with part number 77960-T2A-H911-M1

What does the airbag control unit 77960-T2A-H911-M1 do?

In the vehicle, the airbag control unit 77960-T2A-H911-M1 forms the switching centre of the restraint system (SRS) of Honda. It reads the crash sensors and, in an accident, decides within milliseconds which airbags and seatbelt pretensioners are activated.

In addition, the system is monitored without interruption. If the unit detects a fault, it displays it via the airbag warning light in the instrument cluster.

After an accident it records crash data and locks itself.

Why does the control unit 77960-T2A-H911-M1 fail?

The most common cause is crash data stored in the unit after an accident, even if no airbag was triggered. A conventional diagnostic tool cannot access it. On the 77960-T2A-H911-M1, aged components, cold solder joints, moisture at plug connections and voltage spikes are also possible causes.

Crash data remains stored until it is deleted. Triggering of the airbags is not needed for this; the entry in the memory is enough.

The other causes lie in the electronics themselves or in their surroundings. Components age, solder joints can give way with temperature changes, and wetness attacks contacts, so corrosion sets in.

Voltage spikes, such as from a weak battery or jump-starting, additionally stress the circuit.

How can you tell that the 77960-T2A-H911-M1 is defective?

A defect on the 77960-T2A-H911-M1 shows itself through the airbag warning light in the instrument cluster, which burns constantly or intermittently, through a fault message in the instrument cluster, through a diagnostic tool without connection to the control unit, and through a fault memory that cannot be cleared.

The warning light is the most important signal, because it displays the fault in the restraint system directly. As long as it is lit, airbags and seatbelt pretensioners may possibly not trigger in an emergency.

Because the vehicle continues to run unobtrusively in everyday use, a check is worthwhile already at the first indication.

Which vehicles is the 77960-T2A-H911-M1 fitted in?

The control unit 77960-T2A-H911-M1 is fitted in these vehicles: Honda CR-V 4 RM (2012-2018). The information relates to this unit and its part number.

The vehicles at a glance:

• Honda CR-V 4 RM (2012-2018)

On the one hand, it is worth comparing the part number on the label of the removed unit with this page. That only ensures that it is the right unit. On the other hand, have the fault memory read out before removal. Only the result shows whether the control unit itself 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-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-H911-M1 work?

First have the fault memory read out and enclose the log. Then disconnect the battery, and only then remove the control unit 77960-T2A-H911-M1. Next, create a repair order online and send in the well-packed unit.

Airbag24 checks the unit on the test bench, repairs defective components, deletes stored crash data and carries out a function test. Your own unit then comes back to you. Processing at Airbag24 generally takes 3–4 working days.

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-H911-M1 get to Airbag24?

You send the control unit 77960-T2A-H911-M1 in as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 sends the unit back to you by UPS.

Put the printed repair order into the parcel and pack the unit shockproof.