Airbag control unit with part number GN15-14B321-BC

What does the airbag control unit GN15-14B321-BC do?

As the airbag control unit, GN15-14B321-BC controls the restraint system (SRS) in vehicles from Ford. It receives the readings from the crash sensors and, in an emergency, decides within milliseconds whether airbags and seatbelt pretensioners are triggered.

During operation, the unit monitors the entire system. If it detects a fault, the airbag warning light in the instrument cluster shows this.

After a crash, the unit stores crash data, after which it is locked.

Why does the control unit GN15-14B321-BC fail?

Stored crash data is the most common cause: it stays in the unit after an accident, even if no airbag was triggered. Other causes are more general, such as ageing of components, cold solder joints or moisture.

You cannot erase crash data with an ordinary diagnostic tool. Airbag24 erases it during the repair, so you do not need to worry about it.

General causes include aged electronic components, cold solder joints, and moisture and corrosion at plug connections. Voltage spikes, for example from a weak battery or when jump-starting, also stress the electronics.

How can you tell that the GN15-14B321-BC is defective?

A fault shows when the airbag warning light in the instrument cluster lights up permanently or intermittently, together with an error message in the instrument cluster. The diagnostic tool then finds no connection to the control unit, and the fault memory cannot be cleared.

A unit with such a fault may not be able to trigger the airbags and seatbelt pretensioners in an emergency. That is exactly why the warning light must not be ignored.

Which vehicles is the GN15-14B321-BC fitted in?

The assignment to models is stored on this page. The GN15-14B321-BC is fitted in these vehicles: Ford EcoSport 2 (2012-2015) and 2 Facelift (2015-2022).

Here you can see the vehicles in a list:

• Ford EcoSport 2 (2012-2015)
• Ford EcoSport 2 Facelift (2015-2022)

Comparing the part number with the label on the removed unit only confirms that you have the right unit. Whether the control unit itself is defective, or whether a plug or a cable is the cause, is shown only by reading the fault memory, which you should arrange beforehand.

For the same vehicles, we also repair control units with the part numbers CN15-14B321-AC, CN15-14B321-AD, CN15-14B321-AE, CN15-14B321-AF, CN15-14B321-BC, CN15-14B321-BD.

How does the repair of the GN15-14B321-BC work?

Before removal, have the fault memory read out and attach the log. Then disconnect the battery, remove the control unit and create your repair order online. Airbag24 usually needs 3–4 working days to process it.

You then send the unit in, packed carefully. Airbag24 checks it on the test bench, replaces defective components, erases the crash data and runs a function test. Afterwards your own unit is returned 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 GN15-14B321-BC get to Airbag24?

You send the unit to us as a parcel, or you arrange a UPS collection for an extra charge. UPS takes care of the return after the repair.

The printed repair order goes into the parcel with the unit, and the unit needs stable, shock-resistant packaging.