Airbag control unit with part number P68233024AA

What does the airbag control unit P68233024AA do?

The airbag control unit P68233024AA is the central control unit of the restraint system (SRS) of Fiat. It evaluates the signals from the impact sensors, decides in an accident within milliseconds whether airbags and seatbelt pretensioners are triggered, and reports faults via the airbag warning light.

While driving, the control unit continuously monitors the power supply, the firing circuits and the connections to the connected components. It records every deviation in the fault memory so that it becomes visible during diagnosis.

After an accident the control unit stores crash data and locks itself. This fact is important for any fault finding on this unit.

Why does the control unit P68233024AA fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered; a normal diagnostic tool cannot erase it. Ageing electronic components, cold solder joints, moisture and corrosion at plug connectors, and voltage spikes are also possible causes.

Crash data remains in the memory after the event. A normal diagnostic tool cannot erase it; Airbag24 erases it during the repair.

Other causes include:

• ageing electronic components
• cold solder joints on the circuit board
• moisture and corrosion at plug connectors
• voltage spikes, for example from a weak battery or jump-starting

How can you tell that the P68233024AA is defective?

The airbag warning light in the instrument cluster stays on permanently or intermittently, a fault message appears in the instrument cluster, the diagnostic tool gets no connection to the control unit, and the fault memory cannot be cleared. In the event of a fault, the airbags and seatbelt pretensioners may then fail to trigger.

The warning light is the most important sign. It reports that the system has detected a fault, and it remains a warning even if it only lights up intermittently.

A permanently lit warning light is a clear reason to have the system checked before you rely on it.

Which vehicles is the P68233024AA fitted in?

The P68233024AA is fitted in these vehicles: Fiat 500 312 (2007-2024).

The list shows the models in which this part number is used.

• Fiat 500 312 (2007-2024)

On the one hand, compare the part number on the label of the removed unit with this page; this only ensures that it is the right unit. On the other hand, have the fault memory read out beforehand, as that alone shows whether the control unit is defective or whether a plug or a cable is the cause.

For the same vehicles, we also repair control units with the part numbers 51782985, 51870005, 51897810, 51918659, 51963734, 519637734.

How does the repair of the P68233024AA work?

First have the fault memory read out and enclose the printout, then disconnect the battery and only then remove the control unit P68233024AA. Processing at Airbag24 usually takes 3–4 working days.

The order is binding for safety reasons. After removal, create a repair order online and send the unit in well packed.

Airbag24 checks the unit on the test bench, renews defective components, erases stored crash data and carries out a function test. The repaired unit then 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 P68233024AA get to Airbag24?

You send the control unit P68233024AA as a parcel or book a UPS collection for an extra charge. After the repair, Airbag24 sends it back to you by UPS.

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