Airbag control unit with part number 98820-9BL0A

What does the airbag control unit 98820-9BL0A do?

The airbag control unit 98820-9BL0A is the control unit for the SRS system in Nissan. In a crash it evaluates the impact signals and decides within milliseconds whether airbags and seatbelt pretensioners are triggered. It also monitors the system continuously and reports faults to the airbag warning light.

The unit connects the sensors with the firing units. Without its evaluation, the triggers cannot be controlled in an emergency, so it works unobtrusively in the background as long as everything is in order.

After an accident, the unit stores crash data and locks itself. The lock is only lifted by the repair.

Why does the control unit 98820-9BL0A fail?

The most common cause is crash data stored after an accident, even without a triggered airbag. Other causes are aged components, cold solder joints, moisture at plug connections and voltage spikes.

Crash data cannot be erased with a normal diagnostic tool. At Airbag24 it is erased as part of the repair.

• aged electronic components that lose performance over time
• cold solder joints on the circuit board
• moisture and corrosion at plug connections
• voltage spikes, for example with a weak battery or a jump start

How can you tell that the 98820-9BL0A is defective?

The airbag warning light in the instrument cluster lights up permanently or intermittently, and a fault message appears in the instrument cluster.

• airbag warning light lights up permanently or intermittently
• fault message in the instrument cluster
• the diagnostic tool gets no connection to the control unit
• the fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may then not deploy. The warning light shows the fault, even though it does not say which part is affected.

Which vehicles is the 98820-9BL0A fitted in?

The airbag control unit 98820-9BL0A is fitted in these vehicles: Nissan Frontier D40 (2005-2007) and D40 Facelift (2007-2015).

The vehicles stored for this part number are listed below.

• Nissan Frontier D40 (2005-2007)
• Nissan Frontier D40 Facelift (2007-2015)

Matching the part number on the label of your removed unit with this page only confirms that it is the correct unit. Have the fault memory read out beforehand, because only that result 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 98820 EB01D.

How does the repair of the 98820-9BL0A work?

First have the fault memory read out and enclose the log, then disconnect the battery and only then remove the control unit. Next, create a repair order online and send the unit in well packed.

At Airbag24 the unit is checked on the test bench, defective components are replaced, stored crash data is erased and a function test is carried out. Your own unit then goes back to you.

Processing at Airbag24 usually takes 3–4 working days. 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 98820-9BL0A get to Airbag24?

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

Pack the unit shock-proof and enclose the printed repair order.