Airbag control unit with part number 98820-JJ61A

What does the airbag control unit 98820-JJ61A do?

The airbag control unit 98820-JJ61A is the central control unit of the SRS for Infiniti. It detects a crash via the crash sensors, decides within milliseconds whether to trigger the airbags and seatbelt pretensioners, and monitors the system continuously. It reports faults via the airbag warning light.

Its operation runs unobtrusively in the background as long as the vehicle is switched on.

After an accident, it stores crash data and locks itself.

Why does the control unit 98820-JJ61A fail?

Crash data stored after an accident is the most common cause, even if no airbag was triggered. An ordinary diagnostic tool cannot erase it. Other possible causes are aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes such as those from a weak battery or a jump start.

The other causes share one feature: they act on the electronics or their contacts and change how they behave.

Aged components and moisture act over a longer period, whereas voltage spikes act at short notice.

How can you tell that the 98820-JJ61A is defective?

A defect shows itself through the airbag warning light in the instrument cluster, which lights up permanently or intermittently. In addition there are error messages, connection problems with the diagnostic tool and a fault memory that cannot be erased.

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

In an emergency, airbags and seatbelt pretensioners may then possibly not deploy. If any of these signs appears, have the system checked.

Which vehicles is the 98820-JJ61A fitted in?

The assignment concerns Infiniti and the control unit with exactly this number. It is fitted in these vehicles: Infiniti G37 V36 (2007-2016); Infiniti Q60 Coupe CV36 (2013-2016); Infiniti Q60 Convertible CV36 (2013-2016).

The vehicles in detail are shown in this overview:

• Infiniti G37 V36 (2007-2016)
• Infiniti Q60 Coupe CV36 (2013-2016)
• Infiniti Q60 Convertible CV36 (2013-2016)

Compare the part number on the label of the removed unit with this page, and you will know that you have the correct unit in front of you. Whether the control unit itself is defective is shown only by the fault memory. Have it read out beforehand, because a plug or a cable can just as well be the cause.

For the same vehicles, we also repair control units with the part numbers 98820-1VZ0B, 98820-3LW0B, 98820-JJ80A, 98820-JJ90A, 98820-JK83B, 988201ND0A.

How does the repair of the 98820-JJ61A work?

First have the fault memory read out and enclose the log, then disconnect the battery. Only then remove the control unit and create a repair order online. Testing, repairing and checking at Airbag24 usually takes 3–4 working days.

Then send the unit in well packed. Airbag24 tests it on the test bench, replaces defective components, erases the stored crash data and carries out a function test. After that, your own unit goes 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-JJ61A get to Airbag24?

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

The printed repair order belongs in the parcel, and the control unit should be packed shockproof.