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

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

The airbag control unit GN15-14B321-BH manages the restraint system (SRS) of Ford. From the crash sensor signals it decides within milliseconds whether airbags and seatbelt pretensioners trigger, and it reports faults via the airbag warning light.

The unit checks the system continuously while it is in operation and records faults in the fault memory.

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

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

The most common cause is stored crash data after an accident, even if no airbag was triggered; a normal diagnostic tool cannot remove it. Other causes are aged electronics, cold solder joints, moisture at plug connections and voltage spikes.

The following points are possible causes:

• Electronic components that wear out over time
• Solder joints that have gone cold
• Moisture and corrosion at plugs
• Voltage spikes from a weak battery or a jump start

Which of these applies is shown by examining the unit.

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

The airbag warning light lights up either permanently or only intermittently, and a fault message appears in the instrument cluster. In addition, the diagnostic tool cannot connect to the control unit, and the fault memory cannot be cleared.

In an emergency, airbags and seatbelt pretensioners may then fail to trigger.

The warning light shows that something is wrong in the system and calls for an inspection.

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

An assignment is on record for this part number. The airbag control unit GN15-14B321-BH is fitted in these vehicles: Ford EcoSport 2 Facelift (2015-2022).

The list below names the affected models.

• Ford EcoSport 2 Facelift (2015-2022)

The part number on the label of the removed unit can be compared with this page. This comparison alone confirms that it is the correct unit.

Have the fault memory read out before removal. Only the log shows whether the control unit is defective or whether a plug 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-BH work?

First have the fault memory read out and attach the log. Then disconnect the battery and remove the control unit. Afterwards, create a repair order online and send the unit in, well packed.

Airbag24 inspects the unit on the test bench, replaces defective components, erases stored crash data and carries out a function test.

Processing at Airbag24 normally takes 3–4 working days and covers only inspecting, repairing and testing.

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-BH get to Airbag24?

You send the unit as a parcel or book a UPS collection for an extra charge, and Airbag24 returns it to you by UPS after the repair.

Put the printed repair order into the parcel and pack the control unit shock-resistant.