Airbag control unit with part number 77960-T0A-Y813-M1

What does the airbag control unit 77960-T0A-Y813-M1 do?

The airbag control unit 77960-T0A-Y813-M1 is responsible for the restraint system (SRS) in Honda vehicles. It checks the pulses from the crash sensors and determines in an accident which airbags and seatbelt pretensioners are triggered. A fault in the system is reported via the airbag warning light.

The unit works constantly in the background and checks the connections of the system. The storage of crash data is linked to the accident, after which the unit locks itself.

This function is indispensable for vehicle safety.

Why does the control unit 77960-T0A-Y813-M1 fail?

The most common cause is crash data from an earlier accident, even if no airbag was triggered. A standard diagnostic scanner does not remove it. Other factors also play a role.

• aged electronic components
• cold solder joints
• moisture and corrosion at plug connections
• voltage spikes, for example from a weak battery or a jump start

Which cause applies in an individual case cannot be said without a fault memory read-out.

How can you tell that the 77960-T0A-Y813-M1 is defective?

A defect shows up on the warning light in the instrument cluster or as an error message. The warning light is the airbag warning light, which lights up permanently or flickers intermittently.

• airbag warning light that lights up permanently or only intermittently
• error message in the instrument cluster
• no connection between the diagnostic tool and the control unit
• fault memory that cannot be erased

As long as the fault persists, airbags and seatbelt pretensioners may possibly fail to deploy in an emergency. Have the finding checked promptly.

Which vehicles is the 77960-T0A-Y813-M1 fitted in?

The control unit 77960-T0A-Y813-M1 is fitted in these vehicles: Honda CR-V 4 RM (2012-2018). The part number of the unit is decisive.

The vehicles at a glance:

• Honda CR-V 4 RM (2012-2018)

Compare the part number on the label of the removed unit with this page. That only ensures that you have the right unit. Also have the fault memory read out before removal, because only this result shows whether the control unit is defective or whether 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-Y813-M1 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit. Next create a repair order online and pack the unit well for sending it in.

Airbag24 checks the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test. Checking, repairing and testing take 3–4 working days as a rule. The unit then goes back to you.

With the log, the condition before removal is documented.

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-Y813-M1 get to Airbag24?

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

Place the printed repair order in the parcel and pack the unit shockproof.