Airbag control unit with part number 98820-9CF1A

What does the airbag control unit 98820-9CF1A do?

The airbag control unit 98820-9CF1A is the control centre of the restraint system (SRS) for Nissan. It evaluates the crash sensors, decides in an accident within milliseconds whether airbags and seatbelt pretensioners are triggered, and monitors the system continuously.

Faults become visible via the airbag warning light. After an accident it secures crash data and locks itself, and only the repair lifts this lock.

Why does the control unit 98820-9CF1A fail?

The most common cause is stored crash data after an accident, even if no airbag has deployed. Further possible causes are ageing electronics, cold solder joints, moisture and corrosion at connectors, and voltage spikes.

A normal diagnostic tool cannot remove this crash data. Airbag24 deletes it during the repair.

Other causes at a glance:

• electronics that have aged over time
• solder joints with a cold contact
• moisture and rust on connectors
• voltage spikes, for example when starting with a weak battery or when jump-starting

How can you tell that the 98820-9CF1A is defective?

Signs include an airbag warning light in the instrument cluster that stays on permanently or intermittently, a fault message in the instrument cluster, a diagnostic tool with no connection to the control unit, and a fault memory that cannot be cleared. In that case, airbags and seatbelt pretensioners may not deploy in an emergency.

The warning light in particular shows the state of the system in everyday use.

If a fault can no longer be read out, a check is advisable.

Which vehicles is the 98820-9CF1A fitted in?

The assignment to vehicles comes from the data held by Airbag24. The control unit 98820-9CF1A is fitted in these vehicles: Nissan Xterra N50 (2005-2008) and N50 Facelift (2008-2015).

The following shows the list of vehicles with this control unit.

• Nissan Xterra N50 (2005-2008)
• Nissan Xterra N50 Facelift (2008-2015)

Comparing the label on the removed unit with this page only confirms that you have the right unit in front of you. Whether the control unit is defective, or whether a connector or a cable is the cause, is shown only by the fault memory, which you have read out beforehand.

For the same vehicles, we also repair control units with the part numbers 28556-EC00B, 98820-AV200, 98820-AV21A, 98820-ZP31A.

How does the repair of the 98820-9CF1A work?

Processing at Airbag24 usually takes 3–4 working days. At the start, the fault memory is read out with the readout log enclosed; only then do you disconnect the battery and remove the control unit. The repair order is created online before you send the unit in.

The sequence is mandatory for safety reasons.

At Airbag24, the test bench check is followed by replacing defective components, deleting the crash data and a function test. The 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 98820-9CF1A get to Airbag24?

You send the unit to Airbag24 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 returns it by UPS.

Print out the repair order and place it in the parcel. Pack the unit shockproof.