Airbag control unit with part number 77960-T6A-P110-M2

What does the airbag control unit 77960-T6A-P110-M2 do?

The airbag control unit 77960-T6A-P110-M2 is the central control unit of the restraint system (SRS) for Honda. It evaluates the signals from the crash sensors, decides in a collision within milliseconds about airbags and seatbelt pretensioners, and monitors the system continuously. After a crash it stores crash data and locks itself.

While the vehicle is running, the unit works continuously in the background. It checks sensors, wiring and its own electronics, so that every component responds reliably in an emergency.

If it detects a deviation, the control unit reports it via the airbag warning light. In this way the driver learns that the restraint system is not in order and can have it checked.

Why does the control unit 77960-T6A-P110-M2 fail?

The most frequent cause is crash data stored after a crash, even if no airbag has deployed; a normal diagnostic tool cannot delete it. Airbag24 deletes the crash data during the repair. Other factors include aged electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes, for example from a weak battery or a jump start.

This is why crash data can be found even after accidents in which no airbag deployed. A normal diagnostic tool cannot remove it.

The other causes lie in the electronics themselves or in their environment. Components age, solder joints can go cold, and moisture or corrosion affects plug connections. Voltage spikes, for example from a jump start, can also damage the unit.

How can you tell that the 77960-T6A-P110-M2 is defective?

A defect shows up on the airbag warning light in the instrument cluster, which lights up permanently or intermittently. In addition, an error message in the instrument cluster, a diagnostic tool without connection to the control unit and a fault memory that cannot be cleared are signs. In an emergency, the airbags and seatbelt pretensioners may then fail to deploy.

The airbag warning light is the first warning signal. If it stays on or lights up at times, have the system checked promptly, even if the vehicle can still be driven.

If the diagnostic tool stays silent, that points to a fault in the control unit or its connection. A fault memory that stays full despite an attempt to clear it supports this suspicion.

Which vehicles is the 77960-T6A-P110-M2 fitted in?

Whether your vehicle is included can be checked quickly using the model list. The 77960-T6A-P110-M2 is fitted at Honda in these vehicles: Honda Odyssey 5th generation (from 2013).

The list shows the vehicles in which this control unit has been found so far:

• Honda Odyssey 5th generation (from 2013)

First compare the part number on the label of the removed unit with this page. This shows that it is the correct unit, but says nothing about the defect. Also have the fault memory read out, because 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-THR-A02, 77960-THR-A03, 77960-TK8-A011-M1, 77960-TK8-D01.

How does the repair of the 77960-T6A-P110-M2 work?

First have the fault memory read out and the log attached, then disconnect the battery and remove the control unit. Then create a repair order online and send the well-packed unit. At Airbag24 processing usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, repairs defective components, deletes the stored crash data and carries out a function test. These 3–4 working days cover only checking, repairing and testing at Airbag24.

Afterwards your own unit goes 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-T6A-P110-M2 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

Put the printed repair order in the parcel and pack the control unit shock-proof.