Airbag control unit with part number 28556-6KH0A

What does the airbag control unit 28556-6KH0A do?

The airbag control unit 28556-6KH0A controls the restraint system (SRS) of Nissan. It evaluates the signals from the crash sensors and decides in a collision within milliseconds which airbags and seatbelt pretensioners are triggered.

While driving, the unit checks the entire system continuously. If it detects a fault, it reports it via the airbag warning light in the instrument cluster.

After an accident the control unit stores crash data and then locks itself. The airbags and seatbelt pretensioners are themselves controlled by this unit, which is why its function is decisive for the entire restraint system.

Why does the control unit 28556-6KH0A fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. A normal diagnostic tool cannot delete this data. Other possible causes are aged components, cold solder joints, moisture on plug connections and voltage spikes.

Crash data is held in the control unit. A normal diagnostic tool does not remove it, whereas Airbag24 deletes it during the repair.

Besides the crash data, the following causes are possible:

• aged electronic components
• cold solder joints
• moisture and corrosion on plug connections
• voltage spikes, for example from a weak battery or a jump start

How can you tell that the 28556-6KH0A is defective?

On the 28556-6KH0A, a defect is indicated by the airbag warning light in the instrument cluster, which lights up permanently or from time to time, along with an error message in the instrument cluster. In an emergency, airbags and seatbelt pretensioners could possibly fail to trigger.

Typical features are:

• Airbag warning light lights up permanently or from time to time
• Error message in the instrument cluster
• The diagnostic tool finds no connection to the control unit
• The fault memory cannot be cleared

The warning light therefore shows the state itself. Take the warning seriously, even if the vehicle drives normally.

Which vehicles is the 28556-6KH0A fitted in?

The control unit 28556-6KH0A is fitted in these vehicles: Nissan Frontier D23 (2015-2020); Nissan Navara D23 (2015-2020).

The vehicles in detail:

• Nissan Frontier D23 (2015-2020)
• Nissan Navara D23 (2015-2020)

Compare the part number on the label of the removed unit with this page. That only ensures that you have the correct unit. Have the fault memory read out beforehand, because only this result shows whether the control unit itself is affected or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 0 285 015 304, 28556-8Z325, 285569Z510, 28556EA10A, 98820 6KB0A, 98820 EB01D.

How does the repair of the 28556-6KH0A work?

First have the fault memory read out and enclose the log. Then disconnect the battery and only after that remove the control unit 28556-6KH0A. Finally, create the repair order online and send in the unit well packed.

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

Processing at Airbag24 usually takes 3–4 working days. This time covers only checking, repairing and testing in-house, and has nothing to do with removal or shipping.

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 28556-6KH0A get to Airbag24?

You send the control unit 28556-6KH0A as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 sends it back to you by UPS.

Place the printed repair order in the parcel and pack the control unit shockproof.