Airbag control unit with part number 98820-1KJ1A

What does the airbag control unit 98820-1KJ1A do?

The airbag control unit 98820-1KJ1A controls the restraint system (SRS) of Nissan. It evaluates the signals from the impact and acceleration sensors and decides in a crash, within milliseconds, which airbags and seatbelt pretensioners are triggered. At the same time it monitors the entire system.

If the unit detects a fault, it shows it via the airbag warning light in the instrument cluster. After an accident it stores crash data and locks itself.

This monitoring runs in the background, without you noticing anything. The warning light is therefore the direct indication of the state of the system.

Why does the control unit 98820-1KJ1A fail?

A stored record from an accident is the most common cause, even if no airbag has deployed: crash data remain in the unit after the accident. A normal diagnostic tool cannot erase them. Other causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery or a jump start.

That no airbag has deployed therefore does not mean that nothing was stored in the control unit.

The other causes develop over a longer period. Ageing and moisture change the contacts until the connection is no longer secure.

How can you tell that the 98820-1KJ1A is defective?

A defect shows itself through an airbag warning light in the instrument cluster that stays on permanently or intermittently, through a fault message in the instrument cluster, through a diagnostic tool with no connection to the control unit, and through a fault memory that cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may then fail to deploy. This applies even if the car feels normal in everyday use.

The warning light makes the fault visible. Have the fault memory read out before you continue using the vehicle.

Which vehicles is the 98820-1KJ1A fitted in?

The assignment to this part number is known. The airbag control unit 98820-1KJ1A is fitted in these vehicles: Nissan Juke F15 (2010-2019).

The vehicles for this part number are listed here:

• Nissan Juke F15 (2010-2019)

Both checks belong together. Compare the number on the label of the removed unit with this page to make sure it is the correct unit. Have the fault memory read out beforehand: only this record 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 285011034, 285012139, 285012905, 98820-4BA0A, 98820-4BA0B, 988201KV1A.

How does the repair of the 98820-1KJ1A work?

First have the fault memory read out and attach the log. Then disconnect the battery and only afterwards remove the control unit. Then create a repair order online and send the unit in well packed.

Airbag24 checks the unit on the test bench and replaces defective components. Afterwards Airbag24 deletes the stored crash data and carries out a function test. Your own unit is then returned to you.

Processing at Airbag24 usually takes 3–4 working days. This time covers only checking, repairing and testing.

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 98820-1KJ1A get to Airbag24?

You send the unit as a parcel or 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 shockproof.