Airbag control unit with part number 77960-S9V-X512-C1

What does the airbag control unit 77960-S9V-X512-C1 do?

The airbag control unit 77960-S9V-X512-C1 is the central control unit of the restraint system (SRS) for Honda vehicles. It evaluates the signals from the crash sensors, determines within fractions of a second in an accident which airbags and seatbelt pretensioners to trigger, and monitors the system at all times. It shows faults via the airbag warning light.

After an accident it stores crash data and locks itself. In the vehicle it also manages the fault memory and forms the interface to the diagnostic tool.

Why does the control unit 77960-S9V-X512-C1 fail?

The most common cause with the control unit 77960-S9V-X512-C1 is crash data stored after an accident, even if no airbag has deployed; it cannot be erased with a normal diagnostic tool. Other causes are aged electronic components, cold solder joints, moisture and corrosion, and voltage spikes.

• Aged electronic components that may weaken
• Cold solder joints on the circuit board
• Moisture or corrosion at plug connections
• Voltage spikes, for example from a weak battery or jump-starting

Whether crash data is stored only becomes apparent when the control unit is read out. An airbag does not have to have deployed for this.

How can you tell that the 77960-S9V-X512-C1 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently on the 77960-S9V-X512-C1, a fault message appears in the instrument cluster, and the diagnostic tool gets no connection to the control unit.

While the warning light is on, airbags and seatbelt pretensioners may not deploy in an emergency. Even a light that only comes on at times is a clear sign that the system needs checking.

Which vehicles is the 77960-S9V-X512-C1 fitted in?

The assignment comes from our records. The control unit 77960-S9V-X512-C1 is fitted in the following Honda vehicles: Honda Pilot 1st generation Facelift (2005-2008) and 1st generation (2002-2005).

The vehicles for which we have this part number are listed below:

• Honda Pilot 1st generation Facelift (2005-2008)
• Honda Pilot 1st generation (2002-2005)

Comparing the part number on the label with this page only confirms that the unit is the right one. Also have the fault memory read out, because only this result 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-S9V-A013-C1.

How does the repair of the 77960-S9V-X512-C1 work?

First have the fault memory read out and attach the log to the unit. Then disconnect the battery, and only then remove the airbag control unit 77960-S9V-X512-C1. Online, create the repair order and pack the unit carefully. At Airbag24, processing usually takes 3–4 working days.

Defective components are repaired at Airbag24, stored crash data is erased, and a function test follows. Airbag24 then sends your own unit back.

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-S9V-X512-C1 get to Airbag24?

You send the control unit 77960-S9V-X512-C1 as a parcel; alternatively, you can book a UPS collection for an extra charge. The return after the repair is made by UPS.

Pack the unit shock-proof and put the printed repair order into the parcel.