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

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

The control unit GN15-14B321-KB manages the triggering of the restraint system (SRS) in Ford vehicles. Based on the crash sensors, it decides within milliseconds in a crash which airbags and seatbelt pretensioners fire, and monitors the entire system. It reports irregularities via the airbag warning light.

Its tasks also include checking the connections to the sensors.

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

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

The most common cause lies in crash data stored after an accident, even if no airbag has deployed; a normal diagnostic tool cannot remove it. Aged components, cold solder joints, moisture and corrosion, and voltage spikes are also possible causes.

Crash data remains in the unit after the accident, regardless of whether an airbag has deployed. It is only erased during the repair at Airbag24.

The other causes mainly concern electronics and contacts. Components age, solder joints can turn cold, and moisture or corrosion impairs the plug connections.

Voltage spikes, for example from a weak battery or a jump start, put additional strain on the electronics.

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

A defect shows up as the airbag warning light in the instrument cluster lighting up permanently or intermittently. Fault messages in the instrument cluster, a lost connection to the diagnostic tool, and a fault memory that cannot be cleared may also occur.

These signs occur individually or together:

• airbag warning light stays on permanently
• airbag warning light comes on intermittently
• error message in the instrument cluster
• connection to the diagnostic tool missing
• fault memory cannot be cleared

In an emergency, airbags and seatbelt pretensioners may therefore not be triggered. The warning light must be taken seriously.

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

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

The vehicles for this part number are listed in the overview:

• Ford EcoSport 2 Facelift (2015-2022)

Comparing the part number on the label of the removed unit with this page protects you from confusion. The comparison tells you nothing more. Also have the fault memory read out before removal: only this result 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-KB work?

The first step is reading out the fault memory, and you enclose its log with the unit. Only then disconnect the battery and remove the control unit GN15-14B321-KB. Finally, create a repair order online and send the well-packed unit in.

At Airbag24, the unit is checked on the test bench, defective components are replaced, the crash data is erased and a function test is performed. You then receive your own unit back.

Processing usually takes 3–4 working days. The deadline applies exclusively to checking, repairing and testing at Airbag24.

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-KB get to Airbag24?

You send the control unit GN15-14B321-KB as a parcel or book a UPS collection for an extra charge. The return of the unit after the repair is made by UPS.

The printed repair order belongs in the parcel, and you pack the unit shock-proof.