Airbag control unit with part number 77960-T00-M620-M2

What does the airbag control unit 77960-T00-M620-M2 do?

The airbag control unit 77960-T00-M620-M2 coordinates the restraint system (SRS) in Honda vehicles. From the signals of the crash sensors, it calculates within milliseconds which airbags and seatbelt pretensioners are triggered, and it monitors the entire system. It reports faults via the airbag warning light, and after an accident it stores crash data and locks itself.

Operation takes place in the background. In everyday use you do not need to do anything as long as the system reports no fault.

Why does the control unit 77960-T00-M620-M2 fail?

Stored crash data after an accident is regarded as the most common cause, even if no airbag has deployed. In addition, ageing components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes can cause the failure.

Crash data cannot be erased with a common diagnostic tool. Airbag24 removes it as part of the repair.

The other causes arise from ageing, moisture and electrical stress. A weak battery or a jump start produces voltage spikes that load sensitive electronics.

How can you tell that the 77960-T00-M620-M2 is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently as soon as a fault is stored. The instrument cluster also shows a fault message, the diagnostic tool finds no connection, and the fault memory cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may then fail to trigger. Have the finding checked promptly.

Which vehicles is the 77960-T00-M620-M2 fitted in?

The control unit 77960-T00-M620-M2 is fitted in these vehicles: Honda City 6th generation (2008-2013). The vehicle registration document shows whether your car is meant.

The vehicles in detail:

• Honda City 6th generation (2008-2013)

First compare the part number on the label of the removed unit with this page. This confirms the right unit. Also have the fault memory read out, because only the log shows whether the control unit is defective or whether a plug or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 77810-T9DT81ZA, 77960-T00-Y810-M2.

How does the repair of the 77960-T00-M620-M2 work?

First have the fault memory read out and enclose the log. Then disconnect the battery, only afterwards remove the control unit, and create a repair order online. Pack the unit well before sending it in. Airbag24 checks it on the test bench, repairs defective components, erases the crash data and carries out a function test.

For this work, Airbag24 usually plans 3–4 working days. Your own unit is then returned 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-T00-M620-M2 get to Airbag24?

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

Enclose the printed repair order and pack the control unit shock-proof.