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

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

The airbag control unit GN15-14B321-JC coordinates the restraint system (SRS) of Ford. From the values of the crash sensors, it calculates in an accident which airbags and seatbelt pretensioners should trigger, and it does so within a few milliseconds.

In operation it checks the wiring and the sensors continuously. If it detects a deviation, it shows this via the airbag warning light in the instrument cluster.

After an accident the unit writes crash data into its memory and is locked afterwards.

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

The most common cause is crash data stored after an accident, even if no airbag has deployed. Other possible causes include aged electronic components, cold solder joints, moisture and corrosion on plug connections, as well as voltage spikes.

The crash data stays in the unit until it is deliberately deleted. A standard diagnostic tool cannot reach this data, so the problem cannot be fixed with it.

Voltage spikes arise, for example, from a weak battery or from starting with a jump start. At Airbag24 the crash data is deleted during the repair, while the other causes are determined on the test bench.

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

The airbag warning light in the instrument cluster stays on constantly or from time to time, an error message appears, the diagnostic tool finds no connection to the control unit, and the fault memory cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may then not trigger. Do not treat a lit warning lamp as a minor matter; have the finding clarified promptly.

Watch the warning light when getting in and starting the vehicle, especially if it lights up only from time to time.

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

The control unit GN15-14B321-JC from Ford is fitted in these vehicles: Ford EcoSport 2 Facelift (2015-2022).

The list shows vehicles for which this part number is recorded with us.

• Ford EcoSport 2 Facelift (2015-2022)

Compare the part number on the label of the removed unit with this page, so you can be sure you have the right unit. Have the fault memory read out before removal, because only the log 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 DN1T-14B321-EC, GN15-14B321-AF, GN15-14B321-GJ, GN1Z-14B321-AE, GN1Z-14B321-AK.

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

First have the fault memory read out and attach the log to the unit. Then disconnect the battery, remove the control unit GN15-14B321-JC, create a repair order online and pack the unit well for shipping.

Airbag24 then checks the unit on the test bench, repairs defective components, deletes the stored crash data and carries out a function test. Afterwards your own unit is returned to you.

For the checking, repairing and testing at Airbag24, expect 3–4 working days as a rule. 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-JC get to Airbag24?

You send the control unit GN15-14B321-JC to Airbag24 as a package or book a UPS collection for an extra charge. After the repair, Airbag24 returns it to you by UPS.

Enclose the printed repair order with the package, and pack the unit shock-proof.