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

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

In the Ford vehicle, the GN15-14B321-CB takes over the control of the restraint system (SRS). It continuously evaluates the crash sensors and decides in a crash which airbags and seatbelt pretensioners are triggered.

The evaluation runs continuously in the background, and faults appear via the airbag warning light in the instrument cluster.

After a crash the unit stores crash data and remains locked. Only the repair lifts the lock.

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

On the GN15-14B321-CB, stored crash data is the most common cause, even if no airbag has deployed; a normal diagnostic tool cannot erase it. Airbag24 erases it during the repair. Other causes are aged components, cold solder joints and moisture at plug connections.

The remaining causes can be summarised as follows:

• wear and ageing of electronic components
• cold or faulty solder joints
• moisture and corrosion at plug contacts
• voltage spikes, for example with a weak battery or when starting with a jump start

That no airbag has deployed does not mean that no crash data has been stored.

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

A defect in the GN15-14B321-CB shows in the instrument cluster: the airbag warning light stays on permanently or flickers intermittently, and an error message appears. The diagnostic tool also finds no connection to the control unit, and the fault memory cannot be cleared.

These indications are directly visible. So you learn straight away that something is wrong in the restraint system.

As long as the defect persists, airbags and seatbelt pretensioners may not deploy in an emergency.

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

These vehicles are equipped with the GN15-14B321-CB: Ford EcoSport 2 (2012-2015) and 2 Facelift (2015-2022).

The list with the vehicle details follows straight after.

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

Comparing the part number on the label of the removed unit with this page only confirms that it is the right unit. Reading out the fault memory, on the other hand, shows whether the control unit itself is defective or whether a plug or a cable is the cause. Therefore have it read out 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-CB work?

Have the fault memory read out and enclose the log with the parcel; then disconnect the battery and only then remove the unit. Afterwards create a repair order online and send the control unit GN15-14B321-CB well packed.

Airbag24 examines the unit on the test bench, replaces defective components, erases the stored crash data and carries out a function test. Processing at Airbag24 usually takes 3–4 working days.

Afterwards the unit goes back 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-CB get to Airbag24?

You can send the control unit GN15-14B321-CB as a parcel or book a UPS collection for an extra charge. After the repair Airbag24 returns the unit to you by UPS.

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