Airbag control unit with part number 98820-6CT0A

What does the airbag control unit 98820-6CT0A do?

The airbag control unit 98820-6CT0A is the central control unit of the restraint system (SRS) for Nissan. It evaluates the signals of the crash sensors, decides in an accident within fractions of a second on the triggering of airbags and seatbelt pretensioners, and monitors the system continuously.

If the unit detects a fault, it shows it via the airbag warning light in the instrument cluster. This tells the driver that something is wrong in the restraint system.

After an accident the unit stores crash data and locks itself. Both belong to the basic function of the control unit.

Why does the control unit 98820-6CT0A fail?

The most common cause on the 98820-6CT0A is crash data stored after an accident, even if no airbag has fired. A normal diagnostic tool cannot remove this data. Beyond that, other causes from the electronics are possible.

That the crash data can be erased at Airbag24 means this: we remove it as part of the repair. The other causes include, in brief:

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

How can you tell that the 98820-6CT0A is defective?

A defect on the 98820-6CT0A shows up as the airbag warning light in the instrument cluster, which lights permanently or intermittently, as well as a fault message in the instrument cluster. In addition, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be erased.

With such a finding, airbags and seatbelt pretensioners may possibly not deploy in an emergency. Please have it checked promptly.

Which vehicles is the 98820-6CT0A fitted in?

The control unit 98820-6CT0A is fitted in these vehicles: Nissan Altima L34 (2018-2022).

The vehicles in detail:

• Nissan Altima L34 (2018-2022)

First compare the part number on the label of the removed unit with this page. That only confirms that it is the correct unit; it does not explain what caused the fault. Also have the fault memory read out beforehand, because only this log shows whether the control unit is defective or whether a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 98820-3TA9C, 98820-9HS9A, 98820-9HS9B.

How does the repair of the 98820-6CT0A work?

First read out the fault memory and enclose the log, then disconnect the battery and only then remove the control unit 98820-6CT0A. Next create a repair order online and send the well-packed unit. Processing at Airbag24 usually takes 3–4 working days.

At Airbag24 the unit is checked on the test bench, defective components are repaired, the crash data is erased and a functional test is carried out.

The steps before shipping are yours; checking, repairing and testing are handled by Airbag24. Your own unit then comes back 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 98820-6CT0A get to Airbag24?

You send the control unit 98820-6CT0A as a parcel or book a UPS collection for an extra charge. After the repair, the return is made by UPS.

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