Airbag control unit with part number 98820-9FW2D

What does the airbag control unit 98820-9FW2D do?

The airbag control unit 98820-9FW2D is the central control unit for the restraint system (SRS) of Nissan. It checks the signals from the crash sensors and decides in a crash which airbags and seatbelt pretensioners are triggered. It reports faults in the system via the airbag warning light.

Triggering must happen extremely quickly so that the airbags protect in time. For this reason, the unit evaluates the measured values continuously and compares them with stored limit values. It also monitors the wiring and the components of the system.

After an accident, the unit stores crash data and then locks itself.

Why does the control unit 98820-9FW2D fail?

The most common cause is stored crash data from an accident, even if no airbag has triggered. This data cannot be erased with a normal diagnostic tool. Other possible causes are aged electronics, cold solder joints, moisture at plug connections and voltage spikes.

Crash data remains stored in the unit after an accident, even if no airbag has opened. A usual diagnostic tool cannot remove it, which is why the fault persists.

The other causes include:

• Ageing of individual electronic components
• Solder joints on the circuit board that have gone cold
• Moisture and corrosion at plug connections
• Voltage spikes, for example from a weak battery or jump-start

Which of these causes is present is determined only by examining the unit.

How can you tell that the 98820-9FW2D is defective?

A defect shows up as the airbag warning light in the instrument cluster, which lights up permanently or intermittently. Error messages and a lack of connection to the diagnostic tool are also typical.

These signs can occur individually or together:

• Airbag warning light, permanently or intermittently
• Error message in the instrument cluster
• No connection between the diagnostic tool and the control unit
• Fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may then not be able to trigger. For this reason, you should have the message checked promptly.

Which vehicles is the 98820-9FW2D fitted in?

The assignment applies to Nissan. The control unit 98820-9FW2D is fitted in these vehicles: Nissan Titan H61 Facelift (2020-2024).

These vehicles are assigned to the unit:

• Nissan Titan H61 Facelift (2020-2024)

First compare the part number on the label of the removed unit with this page, and then you know that it is the correct unit. Before that, have the fault memory read out, 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 285013989, 98820-EZ20B, 98820-EZ29B.

How does the repair of the 98820-9FW2D work?

First have the fault memory read out and enclose the log. Then disconnect the battery and remove the control unit, after which you create a repair order online. Processing at Airbag24 generally takes 3–4 working days and covers only inspection, repair and testing.

Airbag24 inspects the unit on the test bench and replaces defective components. The stored crash data is deleted, and then a function test is carried out before your own unit is returned.

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 98820-9FW2D get to Airbag24?

The unit goes to Airbag24 as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 sends it back by UPS.

The printed repair order belongs in the parcel, and the unit must be packed shock-proof.