Airbag control unit with part number 98820-9HP0A

What does the airbag control unit 98820-9HP0A do?

The airbag control unit 98820-9HP0A is the restraint system (SRS) control unit for Nissan and the central point that decides in an accident, within milliseconds, on the triggering of airbags and seatbelt pretensioners. To do this it evaluates the crash sensors and monitors the system permanently.

The unit reports detected faults via the airbag warning light in the instrument cluster and stores them in the fault memory. After an accident it additionally stores crash data and locks itself. Only the repair lifts this lock.

Why does the control unit 98820-9HP0A fail?

The most common cause is crash data stored after an accident, even if no airbag has deployed. A normal diagnostic tool cannot erase it. Further causes are aged components, cold solder joints, moisture and corrosion on plugs, and voltage spikes, for example from a weak battery or jump-starting.

The crash data remains in the unit until Airbag24 erases it during the repair. Which of the other causes applies can only be established by a test.

Electronics age, and plug connections react sensitively to moisture and corrosion.

How can you tell that the 98820-9HP0A is defective?

A defect in the 98820-9HP0A shows itself through the airbag warning light in the instrument cluster, which lights up permanently or intermittently, through an error message in the instrument cluster, through a missing connection of the diagnostic tool, and through a fault memory that cannot be cleared.

The airbag warning light in the instrument cluster is the clearest sign. It lights up permanently or flickers intermittently, and the fault message in the instrument cluster confirms the finding. If no connection can be made from the diagnostic tool to the control unit, or if the fault memory cannot be cleared, this is likewise a sign of a fault.

With these signs, airbags and seatbelt pretensioners may possibly fail to trigger in an emergency. Do not ignore the warning light, therefore.

Which vehicles is the 98820-9HP0A fitted in?

The airbag control unit 98820-9HP0A is fitted in these vehicles: Nissan Altima L33 (2012-2018).

These vehicles are assigned to this part number:

• Nissan Altima L33 (2012-2018)

Comparing the part number on the label with this page and reading out the fault memory serve different purposes. First compare the part number on the label of the removed unit with this page; this tells you that it is the right unit. It does not, however, reveal the cause. Have the fault memory read out beforehand, because only that result shows whether the control unit itself or a plug or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 98820-3TA0B, 98820-3TA9C, 98820-9HN0A, 98820-9HS9A.

How does the repair of the 98820-9HP0A work?

First have the fault memory read out and enclose the log with the unit. Then disconnect the battery and only then remove the control unit 98820-9HP0A. Then you create a repair order online and send the well-packed unit in.

The test is carried out on the test bench. Airbag24 repairs defective components, erases the stored crash data and carries out a function test. This work takes 3–4 working days as a rule; this time applies to checking, repairing and testing.

Afterwards your own unit goes 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 98820-9HP0A get to Airbag24?

You send the control unit 98820-9HP0A as a parcel, or you 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 shockproof.