Airbag control unit with part number F1ET-14B321-CC

What does the airbag control unit F1ET-14B321-CC do?

The airbag control unit F1ET-14B321-CC controls the restraint system (SRS) in Ford. It processes the signals of the crash sensors, decides on the triggering of airbags and seatbelt pretensioners within milliseconds in an accident, and monitors the entire system.

If the unit detects a fault, it stores it and shows it via the airbag warning light in the instrument cluster. In this way the driver quickly sees that the system needs checking.

After an accident the unit records crash data and locks itself. This lock is part of the protective logic of the control unit and does not point to additional damage.

Why does the control unit F1ET-14B321-CC fail?

The most common cause is crash data stored after an accident, even if no airbag was triggered; these cannot be removed with a normal diagnostic tool. Aged electronic components, cold solder joints, moisture and corrosion at plug connections, and voltage spikes, for example from a weak battery, can also be involved.

When searching for the fault, the first thing to check is the crash data, because it most likely explains the failure. However, without reading out the memory it cannot be said for certain whether it is actually the cause.

The other causes tend to be longer-term. Electronics age, solder joints can be cold or cracked, and moisture reaches the contacts. A jump start or a weak battery additionally load the circuit.

How can you tell that the F1ET-14B321-CC is defective?

The airbag warning light in the instrument cluster stays on permanently or flickers intermittently. A fault message also appears in the instrument cluster, and the diagnostic tool does not find the control unit. If the fault memory remains even after an attempt to clear it, this is also a sign.

The display in the instrument cluster is the clearest indication of a fault. Do not wait until further symptoms appear.

If airbags and seatbelt pretensioners do not trigger in an emergency, the cause may lie in exactly this unit. The warning light announces this, and it is the reason to have the system checked promptly.

Which vehicles is the F1ET-14B321-CC fitted in?

The assignment shows which vehicles belong to this part number. The airbag control unit F1ET-14B321-CC is fitted in these vehicles: Ford Focus 3 ’11 (2010-2014) and 3 ’11 Facelift (2014-2018).

Here follows the list of vehicles known to us for this number.

• Ford Focus 3 ’11 (2010-2014)
• Ford Focus 3 ’11 Facelift (2014-2018)

Compare the part number on the label of the removed unit with this page, because that shows you have the right unit. Also have the fault memory read out beforehand, since only this result shows whether the control unit is defective or whether a connector or cable is the cause.

For the same vehicles, we also repair control units with the part numbers 285011993, BM5T-14B321-CE, CM5T-14B321-CA, DM5T 14B321 SA, F1ET-14B321-CB.

How does the repair of the F1ET-14B321-CC work?

First have the fault memory read out and document the log. Then disconnect the battery and only after that remove the control unit. Finally, create a repair order online and send the unit off, well packed.

At Airbag24 the unit is examined on the test bench, defective components are repaired, and the stored crash data is removed. A functional test checks the result before the unit goes back to you.

For these steps at Airbag24, 3–4 working days are usually scheduled. 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 F1ET-14B321-CC get to Airbag24?

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

Put the printed repair order in the parcel and pack the control unit shock-proof. Make sure nothing shifts inside the box.