Airbag control unit with part number 77960-T2V-Y020-M4

What does the airbag control unit 77960-T2V-Y020-M4 do?

The airbag control unit 77960-T2V-Y020-M4 evaluates the crash sensors in the restraint system (SRS) of Honda. In an accident it decides within milliseconds which airbags and seatbelt pretensioners fire. After an accident it stores crash data and locks itself.

It monitors the system continuously and reports faults via the airbag warning light in the instrument cluster.

Why does the control unit 77960-T2V-Y020-M4 fail?

Stored crash data is the most common cause, even if no airbag fired in the accident. A standard diagnostic tool cannot erase this data.

Airbag24 erases the crash data as part of the repair; you do not need to do anything extra for this.

Aged components and cold solder joints on the circuit board are further causes that can lead to intermittent faults.

Moisture at plug connections and voltage spikes, for example with a weak battery, round off the picture.

How can you tell that the 77960-T2V-Y020-M4 is defective?

On the 77960-T2V-Y020-M4, a fault becomes noticeable through the airbag warning light in the instrument cluster, which stays on permanently or intermittently. Fault messages and a fault memory that cannot be cleared can come with it. In an emergency, airbags and seatbelt pretensioners may therefore fail to deploy.

These signs indicate a fault:

• airbag warning light on permanently or intermittently
• fault message in the instrument cluster
• no connection to the diagnostic tool
• fault memory cannot be cleared

Reading out the fault memory quickly shows what the cause is.

Which vehicles is the 77960-T2V-Y020-M4 fitted in?

Whether it fits your car is shown by comparing the part number 77960-T2V-Y020-M4 on the label. The control unit 77960-T2V-Y020-M4 is fitted in these vehicles: Honda Accord 9th generation (2012-2019).

For the part number 77960-T2V-Y020-M4, we have the following vehicles on record:

• Honda Accord 9th generation (2012-2019)

Read out the fault memory before removal so that it is clear whether the control unit is at fault and not a connector or cable. Then match the label of the removed unit with 77960-T2V-Y020-M4.

For the same vehicles, we also repair control units with the part numbers 77960-SEA-G815-M1, 77960-T3L-A012-M1, C0W6K4VDA.

How does the repair of the 77960-T2V-Y020-M4 work?

You have the fault memory read out, enclose the log and disconnect the battery. Then you remove the control unit, create a repair order online and send it in well packed. Airbag24 inspects the unit, repairs faulty components, erases the crash data and carries out a function test.

Processing at Airbag24 usually 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-T2V-Y020-M4 get to Airbag24?

You send the control unit 77960-T2V-Y020-M4 in as a parcel or book a collection by UPS for an extra charge. After the repair, Airbag24 returns the unit to you by UPS.

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