Airbag control unit with part number 98820-6CK1B

What does the airbag control unit 98820-6CK1B do?

The airbag control unit 98820-6CK1B is the central control unit of the restraint system (SRS) in Nissan. It evaluates the crash sensors, decides in an accident within milliseconds which airbags and seatbelt pretensioners are triggered, and shows faults via the airbag warning light.

The unit monitors the entire system during operation. It stores deviations in the fault memory, which a diagnostic tool can read out.

After an accident, it creates crash data and then locks itself.

Why does the control unit 98820-6CK1B fail?

Stored crash data after an accident is the most common reason, even if no airbag has been triggered. A normal diagnostic tool cannot remove it. Other reasons are aged components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

• Aged electronic components
• Cold solder joints
• Moisture and corrosion at plug connectors
• Voltage spikes, for example from jump-starting

The list gives an overview, which does not replace an examination.

How can you tell that the 98820-6CK1B is defective?

A defect shows itself through the airbag warning light, which stays on permanently or intermittently. Added to this are a fault message in the instrument cluster, a diagnostic tool without a connection to the control unit, and a fault memory that cannot be cleared. In that case, airbags and seatbelt pretensioners may possibly not trigger in an emergency.

Do not ignore this warning; have the system checked. A lit warning light remains a sign, even if the vehicle seems to run normally.

Which vehicles is the 98820-6CK1B fitted in?

The control unit 98820-6CK1B is fitted in these vehicles: Nissan Altima L34 (2018-2022). The vehicle registration document and the part number settle the match with your own vehicle.

The models with this part number are listed here:

• Nissan Altima L34 (2018-2022)

Compare the part number on the label of the removed unit with this page; this only confirms that it is the correct unit. Also have the fault memory read out. Only this result 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 98820-6CK1B work?

Have the fault memory read out, attach the log, disconnect the battery and only then remove the control unit 98820-6CK1B. Create the repair order online, then pack and send the unit. Checking, repairing and testing at Airbag24 usually take 3–4 working days.

This sequence is mandatory so that removal is carried out safely.

Airbag24 checks the unit on the test bench, repairs defective components, deletes the stored crash data and carries out a functional test before your own unit is sent 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 98820-6CK1B get to Airbag24?

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

Put the printed repair order into the parcel and pack the unit shockproof.