Airbag control unit with part number 28556 9Z010

What does the airbag control unit 28556 9Z010 do?

The airbag control unit 28556 9Z010 coordinates the restraint system (SRS) of Nissan. It reads the signals from the crash sensors and decides in an emergency, within milliseconds, which airbags and seatbelt pretensioners are triggered.

While the vehicle is moving, the unit continuously checks its surroundings within the system. If it detects a fault, it creates an entry in the memory and reports it via the airbag warning light.

If an incident has been registered after an accident, the control unit stores the crash data and locks itself. The repair lifts this state again.

Why does the control unit 28556 9Z010 fail?

The most common cause is crash data from an earlier accident, even if no airbag was triggered. They cannot be removed with an ordinary diagnostic tool. Other causes include ageing components, cold solder joints, moisture and corrosion at plugs, and voltage spikes, for example from a weak battery.

The stored crash data remains in the unit regardless of how well the vehicle runs afterwards. Only a targeted evaluation makes the entry visible.

The other causes develop over a longer period. Electronics age, connections corrode, and voltage spikes when starting put additional strain on the unit.

How can you tell that the 28556 9Z010 is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and a fault message also appears. The diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared. In an emergency, the airbags and seatbelt pretensioners may then not be triggered.

A defect is therefore not concealed, but shown by the warning light. Anyone who watches it recognises the fault early enough to act.

A lack of communication with the diagnostic tool is also a clear sign. In that case, have the memory read out promptly before you continue to use the vehicle.

Which vehicles is the 28556 9Z010 fitted in?

The equipment of the vehicle determines whether this control unit is installed. The 28556 9Z010 is fitted in these vehicles: Nissan Frontier D23 (2015-2020).

Airbag24 has these vehicles recorded for this part number:

• Nissan Frontier D23 (2015-2020)

Compare the part number on the label of your unit with this page. This only confirms that you have removed the correct control unit. Have the fault memory read out beforehand, because only that 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 28556-8Z325, 285569Z510, 28556EA10A, 98820-9BU3A.

How does the repair of the 28556 9Z010 work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only then remove the control unit. Create a repair order online and send the unit in well packed. At Airbag24, processing usually takes 3–4 working days.

Airbag24 checks the unit on the test bench, replaces defective components, deletes the crash data and carries out a function test. Afterwards your own unit is sent back to you.

Keep to the order of removal for safety reasons, because the airbag components must be disconnected from the power supply beforehand.

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 28556 9Z010 get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

Put the printed repair order into the parcel and pack the unit shock-proof so that it survives the journey undamaged.