Airbag control unit with part number 77960-SNB-Y815-M1

What does the airbag control unit 77960-SNB-Y815-M1 do?

The airbag control unit 77960-SNB-Y815-M1 controls the restraint system (SRS) of Honda. It evaluates the signals from the crash sensors, determines in an accident within milliseconds the triggering of airbags and seatbelt pretensioners, and shows faults via the airbag warning light.

During operation the unit monitors the connections to sensors, airbags and seatbelt pretensioners and reports irregularities to the driver. After an accident it stores crash data and locks itself; only the repair lifts this lock.

Why does the control unit 77960-SNB-Y815-M1 fail?

The most common cause is crash data stored after an accident, even if no airbag has fired; a normal diagnostic tool cannot erase it. Further causes are ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Airbag24 removes the crash data as part of the repair; the diagnostic tool alone cannot do that. The other triggers affect the electronics and their surroundings:

• ageing components
• cold solder joints
• moisture and rust on the plugs
• voltage spikes, for example from a weak battery or a jump-start

How can you tell that the 77960-SNB-Y815-M1 is defective?

A defect in the 77960-SNB-Y815-M1 shows up first through the airbag warning light, which stays on permanently or intermittently, and through fault messages in the instrument cluster. Add to that a diagnostic tool with no connection and a fault memory that cannot be cleared. Airbags and seatbelt pretensioners may then possibly not fire in an emergency.

The airbag warning light in the instrument cluster is the first warning signal you will notice. As soon as the system detects a fault, it lights up and calls for the system to be checked.

Which vehicles is the 77960-SNB-Y815-M1 fitted in?

The airbag control unit 77960-SNB-Y815-M1 is fitted in these vehicles: Honda Civic 8th generation (2005-2011).

The overview relates to Honda and lists the vehicles in which this part number is installed.

• Honda Civic 8th generation (2005-2011)

Compare the part number on the label of the removed unit with this page, so that you know you have the right unit. Also have the fault memory read out before removal, because its log 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-S02-A840-M3, 77960-SMG-G014-M1.

How does the repair of the 77960-SNB-Y815-M1 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit 77960-SNB-Y815-M1. Create the repair order online, then pack the unit well and send it in. Processing at Airbag24 takes 3–4 working days as a rule.

Airbag24 checks the unit on the test bench, replaces defective components, erases the crash data and carries out a function test. 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-SNB-Y815-M1 get to Airbag24?

You send the control unit 77960-SNB-Y815-M1 as a parcel or book a UPS collection for an extra charge. The return after the repair is made by UPS.

Enclose the printed repair order in the parcel. Padding material around the unit protects it on the way.