Airbag control unit with part number 77960-S9V-A012-M1

What does the airbag control unit 77960-S9V-A012-M1 do?

The 77960-S9V-A012-M1 controls the SRS restraint system of Honda. It evaluates the crash sensors, determines within milliseconds in the event of an accident which airbags and seatbelt pretensioners are triggered, and monitors the system continuously. After an accident it stores crash data and locks itself.

A detected fault appears in the instrument cluster via the airbag warning light.

In an emergency everything happens in fractions of a second, which is why faultless operation is so important.

Why does the control unit 77960-S9V-A012-M1 fail?

The most common cause is crash data that the device has stored after an accident, even if no airbag has deployed; a normal diagnostic tool does not erase it. Other possible causes are ageing electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes.

Typical further causes are:

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

Only the evaluation of the fault memory shows which of these causes is present.

How can you tell that the 77960-S9V-A012-M1 is defective?

A defect shows itself through the airbag warning light, which lights up permanently or intermittently, through a fault message in the instrument cluster, through a diagnostic tool with no connection to the control unit, or through a fault memory that cannot be erased. In an emergency, the airbags and seatbelt pretensioners may then fail to deploy.

The warning light is the most unambiguous sign. It becomes active as soon as the system has found the fault.

A fault message may disappear again after a short time. However, the entry in the fault memory remains and provides information about the event.

Which vehicles is the 77960-S9V-A012-M1 fitted in?

The 77960-S9V-A012-M1 is fitted in these vehicles: Honda Pilot 1st generation Facelift (2005-2008) and 1st generation (2002-2005).

The following list shows the vehicles to which this part number is assigned.

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

Compare the part number on the label of the removed device with this page. That confirms that it is the correct device. Whether the control unit is defective or a plug or cable is the cause is shown only by the fault memory, which you should have read out beforehand.

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-A012-M1 work?

First have the fault memory read out and attach the log, then disconnect the battery and remove the control unit. Next, create a repair order online and send the device in well packed. Airbag24 usually needs 3–4 working days for checking, repairing and testing.

The sequence protects you when working on the airbag system, which is why the control unit is only removed after the battery has been disconnected.

At the test bench, Airbag24 examines the device, repairs defective components, erases stored crash data and carries out a function test. Afterwards, Airbag24 sends your own device 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-A012-M1 get to Airbag24?

You send the device in as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

Put the printed repair order into the parcel and pack the control unit shock-proof.