Airbag control unit with part number 98820-EZ70A

What does the airbag control unit 98820-EZ70A do?

The airbag control unit 98820-EZ70A forms the central control unit of the SRS for Nissan. It processes the crash sensors, decides in an accident within milliseconds which airbags and seatbelt pretensioners to trigger, and monitors the system continuously.

The unit detects faults itself and passes them on to the airbag warning light in the instrument cluster. At the same time, the entries in the fault memory are saved so that workshops can read them out.

After an accident the control unit stores crash data and locks itself. The following sections give more detail.

Why does the control unit 98820-EZ70A fail?

The most frequent trigger is crash data stored after an accident, even if no airbag has fired. A standard diagnostic tool does not erase it, so the fault remains.

Crash data is not the only problem, but it prevents the fault from being narrowed down by simple means. For this reason, after an accident you should not spend a long time trying things yourself, but hand over the check.

Further causes lie in the electronics. Components age, solder joints can give way, and moisture or corrosion at plug connections disturb the contact. Voltage spikes, for example from a weak battery or jump starting, additionally stress the circuit.

How can you tell that the 98820-EZ70A is defective?

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

The airbag warning light shows the state most clearly. It remains lit or flickers intermittently, and this also persists after an engine restart if the system is faulty. In that case the unit is not in order, regardless of whether the car is still driving.

It is important that airbags and seatbelt pretensioners may fail to trigger in an emergency as long as the fault persists. The check should therefore not be postponed, even if the symptoms seem minor.

Which vehicles is the 98820-EZ70A fitted in?

The control unit 98820-EZ70A is fitted in these vehicles: Nissan Titan H61 (2015-2020).

The following list names the models for which this part number is documented.

• Nissan Titan H61 (2015-2020)

Before removal, have the fault memory read out. That clarifies whether the control unit is really the cause or only a plug or cable. Then compare the part number on the label with the information in this overview.

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-EZ70A work?

At Airbag24, processing usually takes 3–4 working days. During this time the unit is checked, defective components are replaced and a function test follows.

First read out the fault memory and attach the log. Then disconnect the battery and remove the control unit. Create the repair order online and pack the unit well before it goes on its way.

At Airbag24 the stored crash data is also deleted before your own unit 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-EZ70A get to Airbag24?

You send the control unit 98820-EZ70A as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 sends the unit back to you by UPS.

Put the printed repair order into the parcel and pack the control unit shockproof.