Airbag control unit with part number 98820-EZ73B

What does the airbag control unit 98820-EZ73B do?

The airbag control unit 98820-EZ73B is the central control unit of the restraint system (SRS) in Nissan. It evaluates the crash sensors, decides in an emergency within fractions of a second on airbags and seatbelt pretensioners, and shows faults via the airbag warning light.

The system is monitored continuously by the control unit. Connections and components are included in the check.

After an accident, the unit stores crash data and locks itself. For the workshop, this is the point at which troubleshooting begins.

Why does the control unit 98820-EZ73B fail?

The most common cause is stored crash data after an accident, even if no airbag has deployed. A normal diagnostic tool does not erase it. Other causes include aged electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes.

That no airbag has deployed says nothing about whether crash data has been stored. The entries remain in the unit until they are erased during a repair.

The other causes concern the electronics and the contacts in the unit. They are hard to narrow down without reading out the fault memory.

How can you tell that the 98820-EZ73B is defective?

The airbag warning light in the instrument cluster lights up constantly or intermittently, a fault message appears in the instrument cluster, or the diagnostic tool cannot establish a connection to the control unit. A fault memory that cannot be cleared is also a sign. Airbags and seatbelt pretensioners may not trigger in an emergency.

The warning light shows the problem directly. If it is lit, the system should be checked.

Whether the fault lies in the unit itself or in a plug only becomes apparent when the fault memory is read out.

Which vehicles is the 98820-EZ73B fitted in?

This control unit is intended for Nissan. It is fitted in these vehicles: Nissan Titan H61 (2015-2020).

The overview below lists the vehicles individually:

• Nissan Titan H61 (2015-2020)

Compare the part number on the label of the removed unit with this page. This shows only that you have the correct unit, nothing more. Have the fault memory read out before doing anything else. The log shows whether the control unit is defective or 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-EZ73B work?

Processing at Airbag24 usually takes 3–4 working days. Before removal, have the fault memory read out and enclose the log. Then disconnect the battery, remove the control unit and create a repair order online.

Airbag24 checks the unit you sent in, repairs defective components, erases the stored crash data and carries out a function test. Your own unit is then returned 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-EZ73B get to Airbag24?

You send the unit in as a parcel, or you book a UPS collection for an extra charge. After the repair, Airbag24 sends it back via UPS.

Put the printed repair order in the parcel and pack the unit shock-resistant.