Airbag control unit with part number 77960-SNA-K011-M1

What does the airbag control unit 77960-SNA-K011-M1 do?

The airbag control unit 77960-SNA-K011-M1 forms the central unit of the SRS system in Honda. It evaluates the crash sensors, decides on the triggering of airbags and seatbelt pretensioners, and monitors the entire system. After an accident, it stores crash data and locks itself.

If the unit detects a fault, it reports it to the airbag warning light in the instrument cluster.

In an emergency, triggering must take effect immediately, which is why this function is anchored centrally in the unit.

Why does the control unit 77960-SNA-K011-M1 fail?

Crash data from an earlier accident is the most common cause on this 77960-SNA-K011-M1, even if no airbag has deployed. Aged electronic components, cold solder joints, moisture and corrosion on plug connections, and voltage spikes come on top of that.

Such data cannot be reached with a normal diagnostic tool. Airbag24 takes over the erasing as part of the repair.

Aged components, cold solder joints and corrosion on plugs also affect signal quality. Voltage spikes, for example from a jump start or a weak battery, put additional load on the unit.

How can you tell that the 77960-SNA-K011-M1 is defective?

A defect on the 77960-SNA-K011-M1 is indicated by the airbag warning light in the instrument cluster, which stays on permanently or only intermittently. In addition come a fault message in the instrument cluster, no connection to the diagnostic tool, and a fault memory that cannot be cleared.

The following signs point to a defect:

• Airbag warning light permanently or intermittently on
• Fault message in the instrument cluster
• No contact between diagnostic tool and control unit
• Fault memory cannot be cleared

In that case, airbags and seatbelt pretensioners may fail to trigger in an emergency. Therefore have the system checked promptly.

Which vehicles is the 77960-SNA-K011-M1 fitted in?

The 77960-SNA-K011-M1 is fitted in these vehicles: Honda Civic 8th generation (2005-2011).

Below, you will find an overview of the vehicles recorded so far for this unit.

• Honda Civic 8th generation (2005-2011)

Compare the number on the label of the removed unit with this page. That shows whether you have the right unit in front of you, nothing more.

Have the fault memory read out beforehand. Only the log 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 77960-SMG-G014-M1, 77960-SMG-G021-M1, 77960-SMG-G120-M1, 77960-SNA-L220-M1, 77960-SNA-L230-M1, 77960-SNA-M410-M1.

How does the repair of the 77960-SNA-K011-M1 work?

First have the fault memory read out and the log attached, then disconnect the battery and only then remove the control unit. Then create a repair order online and send the unit well packed. Processing of the 77960-SNA-K011-M1 at Airbag24 usually takes 3–4 working days.

Airbag24 examines the unit on the test bench, rectifies the defects found and carries out a function test. The stored crash data is erased in the process as well.

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-SNA-K011-M1 get to Airbag24?

You send the 77960-SNA-K011-M1 as a parcel, or additionally have it collected by UPS. After the repair, Airbag24 returns it to you by UPS.

Put the printed repair order into the parcel. A shock-proof packaging protects the unit on its way.